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  • File:Penn carb fig1.jpg
    ...Illinois Basin. Compiled by the Tri-State Committee on Correlation of the Pennsylvanian System in the Illinois Basin, 2001.
    (1,500 × 1,000 (276 KB)) - 21:28, 8 March 2016
  • 1520
    #REDIRECT [[Pennsylvanian Subsystem]]
    37 bytes (3 words) - 17:38, 8 November 2016
  • File:Pennsylvanian column.jpg
    Pennsylvanian Column test
    (835 × 2,969 (1.13 MB)) - 16:12, 10 August 2015
  • File:Figure P-6.jpg
    Fig. P-6 -- Typical Pennsylvanian fossils.
    (2,100 × 3,285 (1.5 MB)) - 23:43, 8 March 2016
  • File:Penn symbol.png
    Symbol Used for the Pennsylvanian Geo Unit Designation
    (12 × 13 (16 KB)) - 14:04, 15 January 2016
  • File:Figure P-1.jpg
    Fig. P-1 -- Thickness of the Pennsylvanian System.
    (1,800 × 3,289 (753 KB)) - 15:27, 1 April 2016
  • File:Figure 14.jpg
    Fig. 14 -- Pre-Pennsylvanian megagroups and sequences of Illinois (Swann and Willman, 1961).
    (2,240 × 3,283 (1.08 MB)) - 19:36, 1 April 2016
  • File:Figure P-5.jpg
    Fig. P-5 -- Development of Classification of the Pennsylvanian System (after Kosanke et al., 1960).
    (3,261 × 2,219 (684 KB)) - 22:42, 8 March 2016
  • File:Figure P-9.jpg
    Fig. P-9 -- Geologic map of the sub-Pennsylvanian (sub-Absaroka) surface (after Willman et al., 1967).
    (1,072 × 2,053 (334 KB)) - 14:59, 1 April 2016
  • File:Figure P-4.jpg
    Fig. P-4 -- Geologic map of the sub-Pennsylvanian (sub-Absaroka) surface (after Willman et al., 1967).
    (2,124 × 3,285 (1.15 MB)) - 23:42, 8 March 2016
  • File:C605-Figure-30.jpg
    ...m Potter (1962)<ref>Potter, P.E., 1962, Shape and distribution patterns of Pennsylvanian sand bodies in Illinois: Illinois State Geological Survey, Circular 339, 36 |references=Potter, P.E., 1962, Shape and distribution patterns of Pennsylvanian sand bodies in Illinois: Illinois State Geological Survey, Circular 339, 36
    (2,116 × 2,474 (1.64 MB)) - 14:18, 22 August 2023
  • Historical:Virgilian Series
    |tree22=Pennsylvanian Subsystem |category2=Pennsylvanian Subsystem
    2 KB (252 words) - 22:20, 19 January 2017
  • Carboniferous System
    [[Search:Pennsylvanian_Subsystem|Pennsylvanian Subsystem]]<br>
    121 bytes (11 words) - 16:58, 1 November 2016
  • Historical:Womac Coal Member
    |tree22=Pennsylvanian Subsystem |category2=Pennsylvanian Subsystem
    2 KB (223 words) - 17:20, 24 January 2017
  • Historical:Purington Shale Member
    |tree22=Pennsylvanian Subsystem |category2=Pennsylvanian Subsystem
    1 KB (187 words) - 16:16, 26 January 2017
  • File:C605-Figure-38.jpg
    ...man (1960)<ref>Friedman, S.A., 1960, Channel-fill sandstones in the Middle Pennsylvanian rocks of Indiana: Indiana Geological Survey, Report of Progress No. 23, 59 |references=Friedman, S.A., 1960, Channel-fill sandstones in the Middle Pennsylvanian rocks of Indiana: Indiana Geological Survey, Report of Progress No. 23, 59
    (1,300 × 2,541 (523 KB)) - 13:53, 23 August 2023
  • File:Figure P-3D.jpg
    Fig. P-3D -- The Sub-Absaroka unconformity showing Pennsylvanian strata (Caseyville Formation) truncating Mississippian strata (Kinkaid Lime
    (2,267 × 1,918 (1.38 MB)) - 23:39, 8 March 2016
  • Historical:Greenbush Coal Member
    |tree22=Pennsylvanian Subsystem |category2=Pennsylvanian Subsystem
    1 KB (193 words) - 21:02, 26 January 2017
  • Historical:Athensville Coal Member
    |tree22=Pennsylvanian Subsystem |category2=Pennsylvanian Subsystem
    1 KB (190 words) - 20:11, 24 January 2017
  • Historical:Gila Limestone Member
    |tree22=Pennsylvanian Subsystem |category2=Pennsylvanian Subsystem
    1 KB (192 words) - 22:43, 19 January 2017
  • Historical:Trivoli Sandstone Member
    |tree22=Pennsylvanian Subsystem |category2=Pennsylvanian Subsystem
    2 KB (251 words) - 20:08, 24 January 2017
  • Historical:De Graff Coal Member
    |tree22=Pennsylvanian Subsystem |category2=Pennsylvanian Subsystem
    1 KB (164 words) - 21:57, 24 January 2017
  • File:C605-Figure-60.jpg
    ...w, and N.T. Edgar, 2003b, Climate controls on the stratigraphy of a Middle Pennsylvanian cyclothem in North America, in C.B. Cecil and N.T. Edgar, eds., Climate con ...w, and N.T. Edgar, 2003b, Climate controls on the stratigraphy of a Middle Pennsylvanian cyclothem in North America, in C.B. Cecil and N.T. Edgar, eds., Climate con
    (1,703 × 2,149 (713 KB)) - 16:12, 17 August 2023
  • Historical:Effingham Limestone Member
    |tree22=Pennsylvanian Subsystem |category2=Pennsylvanian Subsystem
    1 KB (166 words) - 20:33, 20 January 2017
  • File:C605-Figure-59.jpg
    |caption=Conceptual model of Pangea during a glacial episode of the Pennsylvanian. From Cecil, ...w, and N.T. Edgar, 2003b, Climate controls on the stratigraphy of a Middle Pennsylvanian cyclothem in North America, in C.B. Cecil and N.T. Edgar, eds., Climate con
    (1,729 × 1,032 (345 KB)) - 16:12, 17 August 2023
  • Historical:Wiley Coal Member
    |tree22=Pennsylvanian Subsystem |category2=Pennsylvanian Subsystem
    2 KB (208 words) - 21:05, 26 January 2017
  • Historical:Bernadotte Sandstone Member
    |tree22=Pennsylvanian Subsystem |category2=Pennsylvanian Subsystem
    2 KB (256 words) - 19:46, 27 January 2017
  • File:Figure P-2.jpg
    Fig. P-2 -- Classification of the Pennsylvanian System. In the graphic column, blank space indicates gray shale. Named memb
    (1,074 × 4,158 (765 KB)) - 15:09, 1 April 2016
  • Historical:Flat Creek Coal Member
    |tree22=Pennsylvanian Subsystem |category2=Pennsylvanian Subsystem
    1 KB (206 words) - 20:34, 23 January 2017
  • Historical:Little Vermilion Limestone Member
    |tree22=Pennsylvanian Subsystem |category2=Pennsylvanian Subsystem
    2 KB (217 words) - 21:34, 2 March 2018
  • Historical:Macoupin Limestone Member
    |tree22=Pennsylvanian Subsystem |category2=Pennsylvanian Subsystem
    2 KB (214 words) - 17:18, 24 January 2017
  • Historical:Flannigan Coal Member
    |tree22=Pennsylvanian Subsystem |category2=Pennsylvanian Subsystem
    2 KB (212 words) - 20:36, 23 January 2017
  • Historical:Allenby Coal Member
    |tree22=Pennsylvanian Subsystem |category2=Pennsylvanian Subsystem
    2 KB (250 words) - 22:07, 24 January 2017
  • Historical:Carlinville Limestone Member
    |tree22=Pennsylvanian Subsystem |category2=Pennsylvanian Subsystem
    1 KB (156 words) - 17:27, 24 January 2017
  • Historical:Shumway Limestone Member
    |tree22=Pennsylvanian Subsystem |category2=Pennsylvanian Subsystem
    2 KB (248 words) - 20:35, 20 January 2017
  • Historical:Wise Ridge Coal Member
    |tree22=Pennsylvanian Subsystem |category2=Pennsylvanian Subsystem
    1 KB (212 words) - 15:42, 27 January 2017
  • Historical:Bogota Limestone Member
    |tree22=Pennsylvanian Subsystem |category2=Pennsylvanian Subsystem
    2 KB (224 words) - 22:46, 19 January 2017
  • Historical:Browning Sandstone Member
    |tree22=Pennsylvanian Subsystem |category2=Pennsylvanian Subsystem
    2 KB (223 words) - 20:56, 26 January 2017
  • Historical:Brush Coal Member
    |tree22=Pennsylvanian Subsystem |category2=Pennsylvanian Subsystem
    2 KB (269 words) - 16:03, 27 January 2017
  • Historical:Gimlet Sandstone Member
    |tree22=Pennsylvanian Subsystem |category2=Pennsylvanian Subsystem
    2 KB (219 words) - 20:16, 24 January 2017
  • Historical:Hall Limestone Member
    |tree22=Pennsylvanian Subsystem |category2=Pennsylvanian Subsystem
    2 KB (221 words) - 17:14, 24 January 2017
  • Historical:Bonpas Limestone Member
    |tree22=Pennsylvanian Subsystem |category2=Pennsylvanian Subsystem
    2 KB (218 words) - 21:03, 20 January 2017
  • Historical:Wayside Member
    |tree22=Pennsylvanian Subsystem |category2=Pennsylvanian Subsystem
    2 KB (224 words) - 20:11, 23 July 2018
  • Historical:Lake Creek Coal Member
    |tree22=Pennsylvanian Subsystem |category2=Pennsylvanian Subsystem
    1 KB (172 words) - 20:17, 24 January 2017
  • Historical:Stonefort Limestone Member
    |tree22=Pennsylvanian Subsystem |category2=Pennsylvanian Subsystem
    2 KB (223 words) - 21:11, 26 January 2017
  • Historical:Bidwell Coal Member
    |tree22=Pennsylvanian Subsystem |category2=Pennsylvanian Subsystem
    1 KB (185 words) - 16:18, 27 January 2017
  • Historical:McClearys Bluff Coal Member
    |tree22=Pennsylvanian Subsystem |category2=Pennsylvanian Subsystem
    2 KB (257 words) - 15:46, 23 January 2017
  • Historical:Isabel Sandstone Member
    |tree22=Pennsylvanian Subsystem |category2=Pennsylvanian Subsystem
    2 KB (244 words) - 20:59, 26 January 2017
  • Historical:Tarter Coal Member
    |tree22=Pennsylvanian Subsystem |category2=Pennsylvanian Subsystem
    2 KB (240 words) - 20:59, 27 January 2017
  • Historical:Big Creek Shale Member
    |tree22=Pennsylvanian Subsystem |category2=Pennsylvanian Subsystem
    1 KB (187 words) - 16:26, 25 January 2017
  • Historical:Cramer Limestone Member
    |tree22=Pennsylvanian Subsystem |category2=Pennsylvanian Subsystem
    2 KB (277 words) - 17:28, 24 January 2017
  • Historical:McLeansboro Group
    |tree22=Pennsylvanian Subsystem |category2=Pennsylvanian Subsystem
    3 KB (457 words) - 22:21, 19 January 2017
  • Historical:Woodbury Limestone Member
    |tree22=Pennsylvanian Subsystem |category2=Pennsylvanian Subsystem
    1 KB (185 words) - 22:41, 19 January 2017
  • Historical:McWain Sandstone Member
    |tree22=Pennsylvanian Subsystem |category2=Pennsylvanian Subsystem
    1 KB (180 words) - 20:48, 23 January 2017
  • Historical:Babylon Sandstone Member
    |tree22=Pennsylvanian Subsystem |category2=Pennsylvanian Subsystem
    2 KB (247 words) - 21:04, 27 January 2017
  • Historical:Francis Creek Shale Member
    |tree22=Pennsylvanian Subsystem |category2=Pennsylvanian Subsystem
    3 KB (374 words) - 18:10, 26 January 2017
  • Historical:McCormick Group
    |tree22=Pennsylvanian Subsystem ...in Illinois thickens from about 200 feet at the northwestern extent of the Pennsylvanian to at least 600 feet in southern Illinois, but it is absent in substantial
    2 KB (320 words) - 16:22, 25 July 2018
  • Historical:Hermon Coal Member
    |tree22=Pennsylvanian Subsystem |category2=Pennsylvanian Subsystem
    2 KB (295 words) - 16:21, 27 January 2017
  • File:Penn carbondale 4-1.jpg
    |Caption=Figure 4-1. Chart showing the development of the Pennsylvanian classification in the Illinois Basin. From the Tri-State Committee (2001).
    (3,001 × 2,371 (1.23 MB)) - 22:44, 28 January 2021
  • Historical:Mt. Rorah Coal Member
    |tree22=Pennsylvanian Subsystem |category2=Pennsylvanian Subsystem
    2 KB (230 words) - 15:43, 27 January 2017
  • Historical:Witt Coal Member
    |tree22=Pennsylvanian Subsystem |category2=Pennsylvanian Subsystem
    1 KB (197 words) - 16:01, 23 January 2017
  • Historical:Pond Creek Coal Member
    |tree22=Pennsylvanian Subsystem |category2=Pennsylvanian Subsystem
    1 KB (204 words) - 20:19, 24 January 2017
  • Historical:Burroughs Limestone Member
    |tree22=Pennsylvanian Subsystem |category2=Pennsylvanian Subsystem
    2 KB (239 words) - 17:24, 24 January 2017
  • Historical:Roodhouse coal bed
    |tree22=Pennsylvanian Subsystem |category2=Pennsylvanian Subsystem
    2 KB (253 words) - 21:25, 15 February 2021
  • Historical:New Haven Coal Member
    |tree22=Pennsylvanian Subsystem |category2=Pennsylvanian Subsystem
    1 KB (206 words) - 17:13, 24 January 2017
  • Historical:Copperas Creek Sandstone Member
    |tree22=Pennsylvanian Subsystem |category2=Pennsylvanian Subsystem
    2 KB (203 words) - 22:11, 24 January 2017
  • Historical:Seahorne Limestone Member
    |tree22=Pennsylvanian Subsystem |category2=Pennsylvanian Subsystem
    2 KB (265 words) - 21:08, 26 January 2017
  • Historical:Abingdon Coal Member
    |tree22=Pennsylvanian Subsystem |category2=Pennsylvanian Subsystem
    1 KB (202 words) - 20:58, 26 January 2017
  • Historical:Sorento Limestone Member
    |tree22=Pennsylvanian Subsystem |category2=Pennsylvanian Subsystem
    2 KB (259 words) - 20:42, 23 January 2017
  • Historical:Pope Creek Coal Member
    |tree22=Pennsylvanian Subsystem |category2=Pennsylvanian Subsystem
    2 KB (262 words) - 19:51, 27 January 2017
  • Historical:Manley Coal Member
    |tree22=Pennsylvanian Subsystem |category2=Pennsylvanian Subsystem
    2 KB (253 words) - 21:01, 27 January 2017
  • Historical:Farmington Shale Member
    |tree22=Pennsylvanian Subsystem |category2=Pennsylvanian Subsystem
    2 KB (268 words) - 22:00, 24 January 2017
  • Historical:Jamestown Coal Member
    |tree22=Pennsylvanian Subsystem |category2=Pennsylvanian Subsystem
    2 KB (268 words) - 16:14, 25 January 2017
  • Historical:Greenup Limestone Member
    |tree22=Pennsylvanian Subsystem |category2=Pennsylvanian Subsystem
    2 KB (257 words) - 22:24, 19 January 2017
  • File:C605-Figure-08.jpg
    ...m Potter (1962)<ref>Potter, P.E., 1962, Shape and distribution patterns of Pennsylvanian sand bodies in Illinois: Illinois State Geological Survey, Circular 339, 36 |references=Potter, P.E., 1962, Shape and distribution patterns of Pennsylvanian sand bodies in Illinois: Illinois State Geological Survey, Circular 339, 36
    (2,350 × 1,736 (1.52 MB)) - 16:42, 21 August 2023
  • Historical:Rock Branch Coal Member
    |tree22=Pennsylvanian Subsystem |category2=Pennsylvanian Subsystem
    1 KB (197 words) - 20:20, 24 January 2017
  • Historical:Hanover Limestone Member
    |tree22=Pennsylvanian Subsystem |category2=Pennsylvanian Subsystem
    2 KB (268 words) - 21:58, 25 January 2017
  • Historical:Absaroka Sequence
    |tree22=Pennsylvanian Subsystem |category2=Pennsylvanian Subsystem
    3 KB (482 words) - 22:16, 19 January 2017
  • Historical:Bunje Limestone Member
    |tree22=Pennsylvanian Subsystem |category2=Pennsylvanian Subsystem
    1 KB (210 words) - 20:37, 23 January 2017
  • Historical:Lusk Shale Member
    |tree22=Pennsylvanian Subsystem The Lusk Shale member is the basal unit of the Pennsylvanian System in southeastern Illinois.
    2 KB (228 words) - 16:17, 25 July 2018
  • Historical:Lawson Shale Member
    |tree22=Pennsylvanian Subsystem |category2=Pennsylvanian Subsystem
    2 KB (314 words) - 15:58, 25 January 2017
  • Historical:Anna Shale Member
    |tree22=Pennsylvanian Subsystem |category2=Pennsylvanian Subsystem
    2 KB (223 words) - 16:19, 25 January 2017
  • Historical:Creal Springs Limestone Member
    |tree22=Pennsylvanian Subsystem |category2=Pennsylvanian Subsystem
    2 KB (267 words) - 15:47, 27 January 2017
  • Browning Sandstone Member
    |tree22=Pennsylvanian Subsystem Nelson, W.J., P.H. Heckel and J.M. Obrad, 2022, Pennsylvanian Subsystem in Illinois: Illinois State Geological Survey, Bulletin (in press
    2 KB (259 words) - 16:30, 9 February 2022
  • Historical:Excello Shale Member
    |tree22=Pennsylvanian Subsystem |category2=Pennsylvanian Subsystem
    2 KB (214 words) - 21:59, 25 January 2017
  • Historical:Pokeberry Limestone Member
    |tree22=Pennsylvanian Subsystem |category2=Pennsylvanian Subsystem
    2 KB (274 words) - 16:00, 25 January 2017
  • Historical:Galum Limestone Member
    |tree22=Pennsylvanian Subsystem |category2=Pennsylvanian Subsystem
    2 KB (206 words) - 22:06, 24 January 2017
  • Historical:New Burnside Coal Member
    |tree22=Pennsylvanian Subsystem |category2=Pennsylvanian Subsystem
    1 KB (206 words) - 16:02, 27 January 2017
  • Historical:Seelyville Coal Member
    |tree22=Pennsylvanian Subsystem |category2=Pennsylvanian Subsystem
    2 KB (210 words) - 21:01, 26 January 2017
  • Historical:Oak Grove Limestone Member
    |tree22=Pennsylvanian Subsystem |category2=Pennsylvanian Subsystem
    2 KB (285 words) - 16:22, 26 January 2017
  • Historical:Scottville Limestone Member
    |tree22=Pennsylvanian Subsystem |category2=Pennsylvanian Subsystem
    2 KB (203 words) - 20:10, 24 January 2017
  • Historical:Seville Limestone Member
    |tree22=Pennsylvanian Subsystem |category2=Pennsylvanian Subsystem
    2 KB (295 words) - 16:24, 27 January 2017
  • Historical:Calhoun Coal Member
    |tree22=Pennsylvanian Subsystem |category2=Pennsylvanian Subsystem
    1 KB (215 words) - 21:04, 20 January 2017
  • Historical:Spoon Formation
    |tree22=Pennsylvanian Subsystem |category2=Pennsylvanian Subsystem
    3 KB (415 words) - 20:54, 26 January 2017
  • Historical:Coffeen Limestone Member
    |tree22=Pennsylvanian Subsystem |category2=Pennsylvanian Subsystem
    2 KB (229 words) - 15:58, 23 January 2017
  • Historical:Sellers Limestone Bed
    |tree22=Pennsylvanian Subsystem |category2=Pennsylvanian Subsystem
    2 KB (220 words) - 22:08, 23 July 2018
  • Historical:Merom Sandstone Member
    |tree22=Pennsylvanian Subsystem |category2=Pennsylvanian Subsystem
    2 KB (243 words) - 15:44, 23 January 2017
  • Historical:De Long Coal Member
    |tree22=Pennsylvanian Subsystem |category2=Pennsylvanian Subsystem
    2 KB (333 words) - 15:45, 27 January 2017
  • Historical:Shawneetown Coal Member
    |tree22=Pennsylvanian Subsystem |category2=Pennsylvanian Subsystem
    2 KB (284 words) - 16:18, 26 January 2017
  • Historical:Palzo Sandstone Member
    |tree22=Pennsylvanian Subsystem |category2=Pennsylvanian Subsystem
    2 KB (225 words) - 21:00, 26 January 2017
  • Historical:Chapel Coal Member
    |tree22=Pennsylvanian Subsystem |category2=Pennsylvanian Subsystem
    2 KB (338 words) - 17:30, 24 January 2017
  • Historical:Omega Limestone Member
    |tree22=Pennsylvanian Subsystem |category2=Pennsylvanian Subsystem
    2 KB (290 words) - 22:48, 20 January 2017
  • Historical:Missourian Series
    |tree22=Pennsylvanian Subsystem |category2=Pennsylvanian Subsystem
    3 KB (401 words) - 20:36, 20 January 2017
  • Historical:Covel Conglomerate Bed
    |tree22=Pennsylvanian Subsystem |category2=Pennsylvanian Subsystem
    2 KB (289 words) - 21:50, 17 February 2021
  • Historical:O'Nan Coal Member
    |tree22=Pennsylvanian Subsystem |category2=Pennsylvanian Subsystem
    2 KB (221 words) - 17:04, 21 June 2019
  • Historical:Conant Limestone Member
    |tree22=Pennsylvanian Subsystem |category2=Pennsylvanian Subsystem
    2 KB (352 words) - 16:03, 25 January 2017
  • Historical:Reisner Limestone Member
    |tree22=Pennsylvanian Subsystem |category2=Pennsylvanian Subsystem
    2 KB (305 words) - 22:44, 19 January 2017
  • Historical:Cohn Coal Member
    |tree22=Pennsylvanian Subsystem |category2=Pennsylvanian Subsystem
    2 KB (246 words) - 17:41, 23 January 2017
  • Historical:Summum Coal Member
    |tree22=Pennsylvanian Subsystem |category2=Pennsylvanian Subsystem
    2 KB (302 words) - 22:00, 25 January 2017
  • Historical:Livingston Limestone Member
    |tree22=Pennsylvanian Subsystem |category2=Pennsylvanian Subsystem
    2 KB (237 words) - 15:56, 23 January 2017
  • Historical:Desmoinesian Series
    |tree22=Pennsylvanian Subsystem |category2=Pennsylvanian Subsystem
    3 KB (433 words) - 17:31, 24 January 2017
  • Historical:Delwood Coal Member
    |tree22=Pennsylvanian Subsystem |category2=Pennsylvanian Subsystem
    2 KB (266 words) - 16:05, 27 January 2017
  • Historical:Vermilionville Sandstone Member
    |tree22=Pennsylvanian Subsystem |category2=Pennsylvanian Subsystem
    2 KB (325 words) - 21:44, 25 January 2017
  • Historical:Granger Sandstone Member
    |tree22=Pennsylvanian Subsystem |category2=Pennsylvanian Subsystem
    2 KB (244 words) - 15:50, 27 January 2017
  • Palzo Sandstone Member
    |tree22=Pennsylvanian Subsystem Nelson, W.J., P.H. Heckel and J.M. Obrad, 2022, Pennsylvanian Subsystem in Illinois: Illinois State Geological Survey, Bulletin (in press
    2 KB (318 words) - 16:30, 9 February 2022
  • Historical:Cheltenham Clay Member
    |tree22=Pennsylvanian Subsystem |category2=Pennsylvanian Subsystem
    2 KB (261 words) - 20:55, 26 January 2017
  • Summum Coal Member
    |tree22=Pennsylvanian Subsystem Nelson, W.J., P.H. Heckel and J.M. Obrad, 2022, Pennsylvanian Subsystem in Illinois: Illinois State Geological Survey, Bulletin (in press
    3 KB (473 words) - 16:17, 9 February 2022
  • Historical:Trowbridge Coal Member
    |tree22=Pennsylvanian Subsystem |category2=Pennsylvanian Subsystem
    1 KB (158 words) - 21:30, 2 March 2018
  • Historical:Friendsville Coal Member
    |tree22=Pennsylvanian Subsystem |category2=Pennsylvanian Subsystem
    2 KB (251 words) - 15:48, 23 January 2017
  • Historical:Vergennes Sandstone Member
    |tree22=Pennsylvanian Subsystem |category2=Pennsylvanian Subsystem
    1 KB (174 words) - 21:10, 26 January 2017
  • Historical:Reel Limestone Member
    |tree22=Pennsylvanian Subsystem |category2=Pennsylvanian Subsystem
    1 KB (168 words) - 17:06, 23 January 2017
  • Historical:Cardiff coal bed
    |tree22=Pennsylvanian Subsystem |category2=Pennsylvanian Subsystem
    2 KB (257 words) - 21:24, 15 February 2021
  • Historical:Mt. Carmel Sandstone Member
    |tree22=Pennsylvanian Subsystem |category2=Pennsylvanian Subsystem
    1 KB (168 words) - 20:55, 23 January 2017
  • Historical:Mecca Quarry Shale Member
    |tree22=Pennsylvanian Subsystem |category2=Pennsylvanian Subsystem
    2 KB (271 words) - 16:24, 26 January 2017
  • Historical:Finnie Sandstone Member
    |tree22=Pennsylvanian Subsystem |category2=Pennsylvanian Subsystem
    2 KB (264 words) - 21:10, 27 January 2017
  • Historical:Kerton Creek coal bed
    |tree22=Pennsylvanian Subsystem |category2=Pennsylvanian Subsystem
    2 KB (265 words) - 21:25, 15 February 2021
  • Virgilian Series
    |category2=Pennsylvanian Subsystem |tree22=Pennsylvanian Subsystem
    3 KB (330 words) - 23:03, 19 January 2017
  • Womac Coal Member
    |category2=Pennsylvanian Subsystem |tree22=Pennsylvanian Subsystem
    2 KB (296 words) - 17:54, 24 January 2017
  • Historical:St. David Limestone Member
    |tree22=Pennsylvanian Subsystem |category2=Pennsylvanian Subsystem
    2 KB (346 words) - 21:49, 25 January 2017
  • Historical:Willis Coal Member
    |tree22=Pennsylvanian Subsystem |category2=Pennsylvanian Subsystem
    1 KB (180 words) - 20:56, 27 January 2017
  • Historical:Gentry Coal Bed
    |tree22=Pennsylvanian Subsystem |category2=Pennsylvanian Subsystem
    2 KB (269 words) - 19:29, 24 July 2018
  • Historical:Jake Creek Sandstone Member
    |tree22=Pennsylvanian Subsystem |category2=Pennsylvanian Subsystem
    1 KB (180 words) - 16:27, 26 January 2017
  • Wiley Coal Member
    |tree22=Pennsylvanian Subsystem Nelson, W.J., P.H. Heckel and J.M. Obrad, 2022, Pennsylvanian Subsystem in Illinois: Illinois State Geological Survey, Bulletin (in press
    5 KB (713 words) - 16:31, 9 February 2022
  • McLeansboro Group
    |category2=Pennsylvanian Subsystem |tree22=Pennsylvanian Subsystem
    4 KB (533 words) - 15:49, 20 January 2017
  • Historical:Spring Lake Coal Member
    |tree22=Pennsylvanian Subsystem |category2=Pennsylvanian Subsystem
    2 KB (279 words) - 16:24, 25 January 2017
  • Historical:Dix Limestone Member
    |tree22=Pennsylvanian Subsystem |category2=Pennsylvanian Subsystem
    1 KB (197 words) - 21:13, 20 January 2017
  • File:C605-Figure-15.jpg
    .... Elrick, and W.J. Nelson, Vegetational zonation in a swamp forest, Middle Pennsylvanian, Illinois Basin, U.S.A., indicates niche differentiation in a wetland plant
    (2,100 × 1,703 (1.09 MB)) - 15:54, 17 August 2023
  • Historical:Millersville Limestone Member
    |tree22=Pennsylvanian Subsystem |category2=Pennsylvanian Subsystem
    2 KB (303 words) - 15:52, 23 January 2017
  • Athensville Coal Member
    |category2=Pennsylvanian Subsystem |tree22=Pennsylvanian Subsystem
    2 KB (261 words) - 21:00, 24 January 2017
  • Historical:Piasa Limestone
    |tree22=Pennsylvanian Subsystem |category2=Pennsylvanian Subsystem
    2 KB (289 words) - 22:39, 24 January 2017
  • Drury Shale Member
    |tree22=Pennsylvanian Subsystem Nelson, W.J., P.H. Heckel and J.M. Obrad, 2022, Pennsylvanian Subsystem in Illinois: Illinois State Geological Survey, Bulletin (in press
    3 KB (468 words) - 16:32, 9 February 2022
  • Allenby Coal Member
    |category2=Pennsylvanian Subsystem |tree22=Pennsylvanian Subsystem
    2 KB (322 words) - 23:02, 24 January 2017
  • Bernadotte Sandstone Member
    |category2=Pennsylvanian Subsystem |tree22=Pennsylvanian Subsystem
    3 KB (333 words) - 20:26, 27 January 2017
  • Shawneetown Coal Member
    |tree22=Pennsylvanian Subsystem Nelson, W.J., P.H. Heckel and J.M. Obrad, 2022, Pennsylvanian Subsystem in Illinois: Illinois State Geological Survey, Bulletin (in press
    3 KB (418 words) - 16:28, 9 February 2022
  • Shumway Limestone Member
    |category2=Pennsylvanian Subsystem |tree22=Pennsylvanian Subsystem
    2 KB (322 words) - 22:32, 20 January 2017
  • Gila Limestone Member
    |category2=Pennsylvanian Subsystem |tree22=Pennsylvanian Subsystem
    2 KB (267 words) - 16:41, 20 January 2017
  • Trivoli Sandstone Member
    |category2=Pennsylvanian Subsystem |tree22=Pennsylvanian Subsystem
    3 KB (344 words) - 21:48, 27 January 2023
  • McClearys Bluff Coal Member
    |category2=Pennsylvanian Subsystem |tree22=Pennsylvanian Subsystem
    3 KB (330 words) - 17:44, 23 January 2017
  • Historical:Litchfield Coal Member
    |tree22=Pennsylvanian Subsystem |category2=Pennsylvanian Subsystem
    1 KB (198 words) - 18:28, 27 January 2017
  • Historical:Briar Hill Coal Member
    |tree22=Pennsylvanian Subsystem |category2=Pennsylvanian Subsystem
    2 KB (297 words) - 21:46, 25 January 2017
  • Little Vermilion Limestone Member
    |category2=Pennsylvanian Subsystem |tree22=Pennsylvanian Subsystem
    2 KB (288 words) - 21:34, 2 March 2018
  • Historical:Pleasantview Sandstone Member
    |tree22=Pennsylvanian Subsystem |category2=Pennsylvanian Subsystem
    2 KB (293 words) - 16:15, 26 January 2017
  • Brush Coal Member
    |category2=Pennsylvanian Subsystem |tree22=Pennsylvanian Subsystem
    3 KB (344 words) - 17:29, 27 January 2017
  • Historical:West Franklin Limestone Member
    |tree22=Pennsylvanian Subsystem |category2=Pennsylvanian Subsystem
    2 KB (328 words) - 20:13, 24 January 2017
  • Historical:Curlew Limestone Member
    |tree22=Pennsylvanian Subsystem |category2=Pennsylvanian Subsystem
    1 KB (191 words) - 18:21, 27 January 2017
  • Historical:Opdyke Coal Member
    |tree22=Pennsylvanian Subsystem |category2=Pennsylvanian Subsystem
    1 KB (200 words) - 21:07, 20 January 2017
  • Flat Creek Coal Member
    |category2=Pennsylvanian Subsystem |tree22=Pennsylvanian Subsystem
    2 KB (279 words) - 16:04, 24 January 2017
  • Cramer Limestone Member
    |category2=Pennsylvanian Subsystem |tree22=Pennsylvanian Subsystem
    3 KB (348 words) - 18:10, 24 January 2017
  • Historical:Danville Coal Member
    |tree22=Pennsylvanian Subsystem |category2=Pennsylvanian Subsystem
    2 KB (328 words) - 22:04, 24 January 2017
  • Historical:Morrowan Series
    |tree22=Pennsylvanian Subsystem |category2=Pennsylvanian Subsystem
    3 KB (460 words) - 21:16, 27 January 2017
  • Flannigan Coal Member
    |category2=Pennsylvanian Subsystem |tree22=Pennsylvanian Subsystem
    2 KB (287 words) - 16:10, 24 January 2017
  • Hall Limestone Member
    |category2=Pennsylvanian Subsystem |tree22=Pennsylvanian Subsystem
    2 KB (293 words) - 17:49, 24 January 2017
  • Bonpas Limestone Member
    |category2=Pennsylvanian Subsystem |tree22=Pennsylvanian Subsystem
    2 KB (290 words) - 22:51, 20 January 2017
  • Macoupin Limestone Member
    |category2=Pennsylvanian Subsystem |tree22=Pennsylvanian Subsystem
    2 KB (289 words) - 17:51, 24 January 2017
  • Historical:Kinkaid Limestone
    ...areas, and slump blocks of Kinkaid occur on the slopes of steep-walled pre-Pennsylvanian valleys. The formation ranges from about 100 feet thick in the north to a l BRISTOL, H. M., and R. H. HOWARD, 1971, Paleogeologic map of the sub-Pennsylvanian Chesterian (upper Mississippian) surface in the Illinois Basin: Illinois St
    3 KB (412 words) - 16:31, 10 January 2017
  • Absaroka Sequence
    |category2=Pennsylvanian Subsystem |tree22=Pennsylvanian Subsystem
    4 KB (561 words) - 22:48, 19 January 2017
  • Bogota Limestone Member
    |category2=Pennsylvanian Subsystem |tree22=Pennsylvanian Subsystem
    2 KB (299 words) - 16:49, 20 January 2017
  • Historical:Mattoon Formation
    |tree22=Pennsylvanian Subsystem |category2=Pennsylvanian Subsystem
    3 KB (441 words) - 22:23, 19 January 2017
  • Wise Ridge Coal Member
    |category2=Pennsylvanian Subsystem |tree22=Pennsylvanian Subsystem
    2 KB (290 words) - 16:55, 27 January 2017
  • Hermon Coal Member
    |category2=Pennsylvanian Subsystem |tree22=Pennsylvanian Subsystem
    3 KB (368 words) - 21:21, 3 February 2017
  • Historical:Inglefield Sandstone Member
    |tree22=Pennsylvanian Subsystem |category2=Pennsylvanian Subsystem
    2 KB (211 words) - 17:25, 24 January 2017
  • Gimlet Sandstone Member
    |category2=Pennsylvanian Subsystem |tree22=Pennsylvanian Subsystem
    2 KB (295 words) - 21:16, 24 January 2017
  • Historical:Shelbyville Coal Member
    |tree22=Pennsylvanian Subsystem |category2=Pennsylvanian Subsystem
    1 KB (205 words) - 21:06, 20 January 2017
  • Historical:Bond Formation
    |tree22=Pennsylvanian Subsystem |category2=Pennsylvanian Subsystem
    3 KB (429 words) - 15:49, 23 January 2017
  • Stonefort Limestone Member
    |category2=Pennsylvanian Subsystem |tree22=Pennsylvanian Subsystem
    2 KB (303 words) - 23:07, 26 January 2017
  • Tarter Coal Member
    |category2=Pennsylvanian Subsystem |tree22=Pennsylvanian Subsystem
    2 KB (313 words) - 22:02, 27 January 2017
  • Historical:Brereton Limestone Member
    |tree22=Pennsylvanian Subsystem |category2=Pennsylvanian Subsystem
    3 KB (427 words) - 16:17, 25 January 2017
  • Historical:Murphysboro Coal Member
    |tree22=Pennsylvanian Subsystem |category2=Pennsylvanian Subsystem
    2 KB (334 words) - 15:49, 27 January 2017
  • Historical:Dekoven Coal Member
    |tree22=Pennsylvanian Subsystem |category2=Pennsylvanian Subsystem
    2 KB (221 words) - 19:08, 3 February 2021
  • Historical:La Salle Limestone Member
    |tree22=Pennsylvanian Subsystem |category2=Pennsylvanian Subsystem
    2 KB (327 words) - 15:02, 24 January 2017
  • Historical:Dykersburg Shale Member
    |tree22=Pennsylvanian Subsystem |category2=Pennsylvanian Subsystem
    2 KB (238 words) - 21:50, 25 January 2017
  • Babylon Sandstone Member
    |category2=Pennsylvanian Subsystem |tree22=Pennsylvanian Subsystem
    3 KB (328 words) - 22:08, 27 January 2017
  • Historical:Kaskaskia Sequence
    ...ng Valmeyeran Series, the Kaskaskia was extended upward to the base of the Pennsylvanian System (Swann and Willman, 1961).
    2 KB (270 words) - 20:27, 5 January 2017
  • Lawson Shale Member
    |category2=Pennsylvanian Subsystem |tree22=Pennsylvanian Subsystem
    3 KB (385 words) - 17:14, 25 January 2017
  • Historical:Springfield Coal Member
    |tree22=Pennsylvanian Subsystem |category2=Pennsylvanian Subsystem
    3 KB (457 words) - 22:44, 18 February 2021
  • Historical:Murray Bluff Sandstone Member
    |tree22=Pennsylvanian Subsystem |category2=Pennsylvanian Subsystem
    2 KB (233 words) - 19:50, 27 January 2017
  • Burroughs Limestone Member
    |category2=Pennsylvanian Subsystem |tree22=Pennsylvanian Subsystem
    2 KB (311 words) - 17:57, 24 January 2017
  • Mt. Rorah Coal Member
    |category2=Pennsylvanian Subsystem |tree22=Pennsylvanian Subsystem
    2 KB (308 words) - 16:59, 27 January 2017
  • Effingham Limestone Member
    |category2=Pennsylvanian Subsystem |tree22=Pennsylvanian Subsystem
    2 KB (241 words) - 22:27, 20 January 2017
  • Historical:Paleozoic Erathem
    ...name was expanded in 1840 to include the Carboniferous (Mississippian and Pennsylvanian) and Permian Systems (Phillips, 1840), and present usage follows that defin ...s more than 125 million years and is marked by the absence of the youngest Pennsylvanian, the Permian, and all the Mesozoic rocks older than late Cretaceous. Betwee
    4 KB (614 words) - 17:47, 22 November 2016
  • Historical:Abbott Formation
    |tree22=Pennsylvanian Subsystem |category2=Pennsylvanian Subsystem
    3 KB (526 words) - 19:43, 27 January 2017
  • Sorento Limestone Member
    |category2=Pennsylvanian Subsystem |tree22=Pennsylvanian Subsystem
    3 KB (330 words) - 16:24, 24 January 2017
  • Historical:Lowell Coal Member
    |tree22=Pennsylvanian Subsystem |category2=Pennsylvanian Subsystem
    2 KB (236 words) - 16:21, 26 January 2017
  • Carlinville Limestone Member
    |category2=Pennsylvanian Subsystem |tree22=Pennsylvanian Subsystem
    2 KB (231 words) - 18:04, 24 January 2017
  • De Graff Coal Member
    |category2=Pennsylvanian Subsystem |tree22=Pennsylvanian Subsystem
    2 KB (240 words) - 22:15, 24 January 2017
  • Greenup Limestone Member
    |category2=Pennsylvanian Subsystem |tree22=Pennsylvanian Subsystem
    3 KB (335 words) - 16:37, 20 January 2017
  • Pope Creek Coal Member
    |category2=Pennsylvanian Subsystem |tree22=Pennsylvanian Subsystem
    3 KB (335 words) - 20:50, 27 January 2017
  • De Long Coal Member
    |category2=Pennsylvanian Subsystem |tree22=Pennsylvanian Subsystem
    3 KB (403 words) - 17:03, 27 January 2017
  • Manley Coal Member
    |category2=Pennsylvanian Subsystem |tree22=Pennsylvanian Subsystem
    2 KB (325 words) - 22:04, 27 January 2017
  • Historical:Kewanee Group
    |tree22=Pennsylvanian Subsystem |category2=Pennsylvanian Subsystem
    3 KB (397 words) - 21:41, 2 March 2018
  • Creal Springs Limestone Member
    |category2=Pennsylvanian Subsystem |tree22=Pennsylvanian Subsystem
    3 KB (339 words) - 17:07, 27 January 2017
  • Seahorne Limestone Member
    |category2=Pennsylvanian Subsystem |tree22=Pennsylvanian Subsystem
    3 KB (340 words) - 23:02, 26 January 2017
  • Historical:Shoal Creek Limestone Member
    |tree22=Pennsylvanian Subsystem |category2=Pennsylvanian Subsystem
    2 KB (249 words) - 15:40, 24 January 2017
  • Farmington Shale Member
    |category2=Pennsylvanian Subsystem |tree22=Pennsylvanian Subsystem
    3 KB (341 words) - 22:21, 24 January 2017
  • Historical:Atokan Series
    |tree22=Pennsylvanian Subsystem |category2=Pennsylvanian Subsystem
    3 KB (399 words) - 18:34, 27 January 2017
  • Sebree Sandstone Member
    |tree22=Pennsylvanian Subsystem Nelson, W.J., P.H. Heckel and J.M. Obrad, 2022, Pennsylvanian Subsystem in Illinois: Illinois State Geological Survey, Bulletin (in press
    2 KB (332 words) - 16:35, 9 February 2022
  • Chapel Coal Member
    |category2=Pennsylvanian Subsystem |tree22=Pennsylvanian Subsystem
    3 KB (413 words) - 18:14, 24 January 2017
  • Jamestown Coal Member
    |category2=Pennsylvanian Subsystem |tree22=Pennsylvanian Subsystem
    3 KB (344 words) - 17:28, 25 January 2017
  • Historical:Pounds Sandstone Member
    |tree22=Pennsylvanian Subsystem |category2=Pennsylvanian Subsystem
    2 KB (257 words) - 21:48, 27 January 2017
  • Pokeberry Limestone Member
    |category2=Pennsylvanian Subsystem |tree22=Pennsylvanian Subsystem
    3 KB (346 words) - 17:19, 25 January 2017
  • File:C605-Figure-34.jpg
    ...y and Francisco distributary fluvial channels in the Petersburg Formation (Pennsylvanian) of Gibson County, Indiana, U.S.A., in R.A. Rahmani and R.M. Flores, eds.,
    (2,164 × 1,455 (543 KB)) - 16:02, 17 August 2023
  • Historical:Reynoldsburg Coal Member
    |tree22=Pennsylvanian Subsystem |category2=Pennsylvanian Subsystem
    2 KB (252 words) - 21:12, 27 January 2017
  • Lusk Shale Member
    |tree22=Pennsylvanian Subsystem Nelson, W.J., P.H. Heckel and J.M. Obrad, 2022, Pennsylvanian Subsystem in Illinois: Illinois State Geological Survey, Bulletin (in press
    3 KB (465 words) - 16:34, 9 February 2022
  • Bidwell Coal Member
    |category2=Pennsylvanian Subsystem |tree22=Pennsylvanian Subsystem
    2 KB (261 words) - 17:36, 27 January 2017
  • Conant Limestone Member
    |category2=Pennsylvanian Subsystem |tree22=Pennsylvanian Subsystem
    3 KB (424 words) - 17:25, 25 January 2017
  • Historical:Davis Coal Member
    |tree22=Pennsylvanian Subsystem |category2=Pennsylvanian Subsystem
    2 KB (235 words) - 21:07, 26 January 2017
  • Woodbury Limestone Member
    |category2=Pennsylvanian Subsystem |tree22=Pennsylvanian Subsystem
    2 KB (260 words) - 16:39, 20 January 2017
  • Lake Creek Coal Member
    |category2=Pennsylvanian Subsystem |tree22=Pennsylvanian Subsystem
    2 KB (252 words) - 21:19, 24 January 2017
  • Witt Coal Member
    |category2=Pennsylvanian Subsystem |tree22=Pennsylvanian Subsystem
    2 KB (270 words) - 20:17, 23 January 2017
  • Historical:Canton Shale Member
    |tree22=Pennsylvanian Subsystem |category2=Pennsylvanian Subsystem
    2 KB (268 words) - 21:48, 25 January 2017
  • McWain Sandstone Member
    |category2=Pennsylvanian Subsystem |tree22=Pennsylvanian Subsystem
    2 KB (256 words) - 16:26, 24 January 2017
  • Seville Limestone Member
    |category2=Pennsylvanian Subsystem |tree22=Pennsylvanian Subsystem
    3 KB (369 words) - 17:41, 27 January 2017
  • Historical:Lonsdale Limestone Member
    |tree22=Pennsylvanian Subsystem |category2=Pennsylvanian Subsystem
    2 KB (244 words) - 20:14, 24 January 2017
  • Historical:Exline Limestone Member
    |tree22=Pennsylvanian Subsystem |category2=Pennsylvanian Subsystem
    2 KB (240 words) - 20:09, 24 January 2017
  • Pond Creek Coal Member
    |category2=Pennsylvanian Subsystem |tree22=Pennsylvanian Subsystem
    2 KB (276 words) - 21:22, 24 January 2017
  • Spoon Formation
    |category2=Pennsylvanian Subsystem |tree22=Pennsylvanian Subsystem
    4 KB (514 words) - 20:32, 1 June 2020
  • McCormick Group
    |tree22=Pennsylvanian Subsystem Nelson, W.J., P.H. Heckel and J.M. Obrad, 2022, Pennsylvanian Subsystem in Illinois: Illinois State Geological Survey, Bulletin (in press
    3 KB (479 words) - 16:14, 9 February 2022
  • Historical:Grindstaff Sandstone Member
    |tree22=Pennsylvanian Subsystem |category2=Pennsylvanian Subsystem
    2 KB (271 words) - 20:58, 27 January 2017
  • Missourian Series
    |category2=Pennsylvanian Subsystem |tree22=Pennsylvanian Subsystem
    3 KB (478 words) - 22:34, 20 January 2017
  • Historical:Assumption Coal Member
    |tree22=Pennsylvanian Subsystem |category2=Pennsylvanian Subsystem
    2 KB (285 words) - 18:30, 27 January 2017
  • Lowell Coal Member
    |tree22=Pennsylvanian Subsystem Nelson, W.J., P.H. Heckel and J.M. Obrad, 2022, Pennsylvanian Subsystem in Illinois: Illinois State Geological Survey, Bulletin (in press
    3 KB (489 words) - 16:28, 9 February 2022
  • Desmoinesian Series
    |category2=Pennsylvanian Subsystem |tree22=Pennsylvanian Subsystem
    4 KB (509 words) - 19:49, 24 January 2017
  • File:C605-Figure-02.jpg
    |caption=Correlation chart showing the positions of key units within the Pennsylvanian Subsystem. Global and provincial stage boundaries and ages in millions of y
    (1,819 × 2,181 (429 KB)) - 16:28, 22 August 2023
  • Omega Limestone Member
    |category2=Pennsylvanian Subsystem |tree22=Pennsylvanian Subsystem
    3 KB (365 words) - 22:47, 20 January 2017
  • Bunje Limestone Member
    |category2=Pennsylvanian Subsystem |tree22=Pennsylvanian Subsystem
    2 KB (283 words) - 16:12, 24 January 2017
  • Rock Branch Coal Member
    |category2=Pennsylvanian Subsystem |tree22=Pennsylvanian Subsystem
    2 KB (270 words) - 21:27, 24 January 2017
  • Copperas Creek Sandstone Member
    |category2=Pennsylvanian Subsystem |tree22=Pennsylvanian Subsystem
    2 KB (278 words) - 23:09, 24 January 2017
  • New Haven Coal Member
    |category2=Pennsylvanian Subsystem |tree22=Pennsylvanian Subsystem
    2 KB (287 words) - 17:46, 24 January 2017
  • Reisner Limestone Member
    |category2=Pennsylvanian Subsystem |tree22=Pennsylvanian Subsystem
    3 KB (379 words) - 16:45, 20 January 2017
  • Galum Limestone Member
    |category2=Pennsylvanian Subsystem |tree22=Pennsylvanian Subsystem
    2 KB (279 words) - 22:46, 24 January 2017
  • New Burnside Coal Member
    |category2=Pennsylvanian Subsystem |tree22=Pennsylvanian Subsystem
    2 KB (279 words) - 17:26, 27 January 2017
  • Coffeen Limestone Member
    |category2=Pennsylvanian Subsystem |tree22=Pennsylvanian Subsystem
    2 KB (301 words) - 20:13, 23 January 2017
  • Scottville Limestone Member
    |category2=Pennsylvanian Subsystem |tree22=Pennsylvanian Subsystem
    2 KB (276 words) - 20:48, 24 January 2017
  • Calhoun Coal Member
    |category2=Pennsylvanian Subsystem |tree22=Pennsylvanian Subsystem
    2 KB (289 words) - 22:54, 20 January 2017
  • Historical:Bankston Fork Limestone Member
    |tree22=Pennsylvanian Subsystem |category2=Pennsylvanian Subsystem
    2 KB (282 words) - 22:09, 24 January 2017
  • Historical:Colchester Coal Member
    |tree22=Pennsylvanian Subsystem |category2=Pennsylvanian Subsystem
    3 KB (418 words) - 20:52, 26 January 2017
  • Stendal Limestone Member
    |tree22=Pennsylvanian Subsystem Nelson, W.J., P.H. Heckel and J.M. Obrad, 2022, Pennsylvanian Subsystem in Illinois: Illinois State Geological Survey, Bulletin (in press
    3 KB (486 words) - 16:37, 9 February 2022
  • Merom Sandstone Member
    |category2=Pennsylvanian Subsystem |tree22=Pennsylvanian Subsystem
    2 KB (318 words) - 17:37, 23 January 2017
  • Historical:Rock Island Coal Member
    |tree22=Pennsylvanian Subsystem |category2=Pennsylvanian Subsystem
    3 KB (410 words) - 20:01, 27 January 2017
  • Cohn Coal Member
    |category2=Pennsylvanian Subsystem |tree22=Pennsylvanian Subsystem
    2 KB (319 words) - 17:40, 23 January 2017
  • Greenbush Coal Member
    |category2=Pennsylvanian Subsystem |tree22=Pennsylvanian Subsystem
    7 KB (1,000 words) - 16:31, 9 February 2022
  • O'Nan Coal Member
    |category2=Pennsylvanian Subsystem |tree22=Pennsylvanian Subsystem
    2 KB (295 words) - 17:03, 21 June 2019
  • Delwood Coal Member
    |category2=Pennsylvanian Subsystem |tree22=Pennsylvanian Subsystem
    3 KB (340 words) - 17:31, 27 January 2017
  • Livingston Limestone Member
    |category2=Pennsylvanian Subsystem |tree22=Pennsylvanian Subsystem
    2 KB (315 words) - 18:17, 23 January 2017
  • Historical:Breezy Hill Limestone Member
    |tree22=Pennsylvanian Subsystem |category2=Pennsylvanian Subsystem
    2 KB (282 words) - 16:11, 26 January 2017
  • Granger Sandstone Member
    |category2=Pennsylvanian Subsystem |tree22=Pennsylvanian Subsystem
    2 KB (317 words) - 17:13, 27 January 2017
  • Cheltenham Clay Member
    |category2=Pennsylvanian Subsystem |tree22=Pennsylvanian Subsystem
    3 KB (336 words) - 22:36, 26 January 2017
  • Friendsville Coal Member
    |category2=Pennsylvanian Subsystem |tree22=Pennsylvanian Subsystem
    2 KB (325 words) - 17:46, 23 January 2017
  • Historical:Battery Rock Sandstone Member
    |tree22=Pennsylvanian Subsystem |category2=Pennsylvanian Subsystem
    2 KB (337 words) - 22:34, 27 January 2017
  • Finnie Sandstone Member
    |category2=Pennsylvanian Subsystem |tree22=Pennsylvanian Subsystem
    3 KB (337 words) - 22:11, 27 January 2017
  • Main Page
    :::[[Search:Pennsylvanian Subsystem|Pennsylvanian Subsystem]] rect 218 269 375 296 [[Search:Pennsylvanian Subsystem]]
    4 KB (531 words) - 22:04, 31 August 2023
  • Historical:Modesto Formation
    |tree22=Pennsylvanian Subsystem |category2=Pennsylvanian Subsystem
    3 KB (469 words) - 15:44, 24 January 2017
  • Piasa Limestone
    |category2=Pennsylvanian Subsystem |tree22=Pennsylvanian Subsystem
    3 KB (358 words) - 22:39, 24 January 2017
  • Historical:Caseyville Formation
    |tree22=Pennsylvanian Subsystem |category2=Pennsylvanian Subsystem
    7 KB (1,108 words) - 21:46, 27 January 2017
  • Historical:Carbondale Formation
    |tree22=Pennsylvanian Subsystem |category2=Pennsylvanian Subsystem
    5 KB (747 words) - 22:02, 24 January 2017
  • Mattoon Formation
    |category2=Pennsylvanian Subsystem |tree22=Pennsylvanian Subsystem
    4 KB (523 words) - 16:35, 20 January 2017
  • Morrowan Series
    |category2=Pennsylvanian Subsystem |tree22=Pennsylvanian Subsystem
    4 KB (535 words) - 22:16, 27 January 2017
  • Kinkaid Limestone
    ...areas, and slump blocks of Kinkaid occur on the slopes of steep-walled pre-Pennsylvanian valleys. The formation ranges from about 100 feet thick in the north to a l BRISTOL, H. M., and R. H. HOWARD, 1971, Paleogeologic map of the sub-Pennsylvanian Chesterian (upper Mississippian) surface in the Illinois Basin: Illinois St
    4 KB (485 words) - 16:01, 13 January 2017
  • Millersville Limestone Member
    |category2=Pennsylvanian Subsystem |tree22=Pennsylvanian Subsystem
    3 KB (381 words) - 18:03, 23 January 2017
  • Bond Formation
    |category2=Pennsylvanian Subsystem |tree22=Pennsylvanian Subsystem
    4 KB (503 words) - 17:57, 23 January 2017
  • Historical:Pope Megagroup
    ...at the base of the Aux Vases Sandstone. It is separated from the overlying Pennsylvanian System by a major unconformity that has a relief of as 450 feet. ...ian age that overlie the Mammoth Cave Limestone Megagroup and underlie the Pennsylvanian System and younger rocks (fig. 14).
    3 KB (372 words) - 16:27, 10 January 2017
  • Brereton Limestone Member
    |category2=Pennsylvanian Subsystem |tree22=Pennsylvanian Subsystem
    4 KB (498 words) - 17:32, 25 January 2017
  • Unnamed gray shale member - Carbondale Formation
    |category2=Pennsylvanian Subsystem |tree22=Pennsylvanian Subsystem
    3 KB (445 words) - 16:37, 9 February 2022
  • Jake Creek Sandstone Member
    |tree22=Pennsylvanian Subsystem Nelson, W.J., P.H. Heckel and J.M. Obrad, 2022, Pennsylvanian Subsystem in Illinois: Illinois State Geological Survey, Bulletin (in press
    3 KB (488 words) - 16:29, 9 February 2022
  • West Franklin Limestone Member
    |category2=Pennsylvanian Subsystem |tree22=Pennsylvanian Subsystem
    3 KB (401 words) - 21:06, 24 January 2017
  • Paleozoic Erathem
    ...name was expanded in 1840 to include the Carboniferous (Mississippian and Pennsylvanian) and Permian Systems (Phillips, 1840), and present usage follows that defin ...s more than 125 million years and is marked by the absence of the youngest Pennsylvanian, the Permian, and all the Mesozoic rocks older than late Cretaceous. Betwee
    5 KB (689 words) - 15:39, 11 January 2017
  • Danville Coal Member
    |category2=Pennsylvanian Subsystem |tree22=Pennsylvanian Subsystem
    3 KB (405 words) - 22:43, 24 January 2017
  • Trowbridge Coal Member
    |category2=Pennsylvanian Subsystem |tree22=Pennsylvanian Subsystem
    2 KB (231 words) - 21:30, 2 March 2018
  • File:C605-Figure-01.jpg
    |caption=Map of the Illinois Basin showing the extent of Pennsylvanian rocks, thickness of the Springfield Coal, and channels interrupting the coa
    (1,704 × 2,400 (727 KB)) - 13:57, 23 August 2023
  • Raccoon Creek Group
    |category2=Pennsylvanian Subsystem |tree22=Pennsylvanian Subsystem
    8 KB (1,109 words) - 16:35, 9 February 2022
  • Reel Limestone Member
    |category2=Pennsylvanian Subsystem |tree22=Pennsylvanian Subsystem
    2 KB (242 words) - 20:30, 23 January 2017
  • Historical:Grove Church Shale
    The formation has been largely eroded from Illinois by pre-Pennsylvanian erosion, and it occurs only in patches in Johnson, Pope, and Saline Countie It has a distinctive fauna; some species have affinities to Pennsylvanian fossils, particularly the fusuline ''Millerella'' and some ostracodes (Coop
    3 KB (352 words) - 16:29, 10 January 2017
  • Vergennes Sandstone Member
    |category2=Pennsylvanian Subsystem |tree22=Pennsylvanian Subsystem
    2 KB (249 words) - 23:04, 26 January 2017
  • Mt. Carmel Sandstone Member
    |category2=Pennsylvanian Subsystem |tree22=Pennsylvanian Subsystem
    2 KB (243 words) - 16:31, 24 January 2017
  • Murphysboro Coal Member
    |category2=Pennsylvanian Subsystem |tree22=Pennsylvanian Subsystem
    3 KB (412 words) - 17:10, 27 January 2017
  • Abbott Formation
    |category2=Pennsylvanian Subsystem |tree22=Pennsylvanian Subsystem
    4 KB (620 words) - 20:33, 1 June 2020
  • Alum Cave Limestone Member
    |tree22=Pennsylvanian Subsystem Nelson, W.J., P.H. Heckel and J.M. Obrad, 2022, Pennsylvanian Subsystem in Illinois: Illinois State Geological Survey, Bulletin (in press
    5 KB (733 words) - 16:38, 9 February 2022
  • La Salle Limestone Member
    |category2=Pennsylvanian Subsystem |tree22=Pennsylvanian Subsystem
    3 KB (406 words) - 16:44, 24 January 2017
  • Velpen Limestone Member
    |tree22=Pennsylvanian Subsystem Nelson, W.J., P.H. Heckel and J.M. Obrad, 2022, Pennsylvanian Subsystem in Illinois: Illinois State Geological Survey, Bulletin (in press
    5 KB (719 words) - 16:36, 9 February 2022
  • Willis Coal Member
    |category2=Pennsylvanian Subsystem |tree22=Pennsylvanian Subsystem
    2 KB (255 words) - 21:56, 27 January 2017
  • Historical:Mississippian Subsystem
    ...869; Williams, 1891), which overlies the Devonian System and underlies the Pennsylvanian System, is named from exposures in the bluffs of the Mississippi River in I ...countries, and the U.S. Geological Survey recognizes the Mississippian and Pennsylvanian Systems as the Carboniferous Systems (Keroher, 1970).
    9 KB (1,331 words) - 16:04, 10 January 2017
  • Historical:Herrin Coal Member
    |tree22=Pennsylvanian Subsystem |category2=Pennsylvanian Subsystem
    4 KB (600 words) - 16:20, 25 January 2017
  • Dix Limestone Member
    |category2=Pennsylvanian Subsystem |tree22=Pennsylvanian Subsystem
    2 KB (272 words) - 23:06, 20 January 2017
  • Kewanee Group
    |category2=Pennsylvanian Subsystem |tree22=Pennsylvanian Subsystem
    3 KB (462 words) - 21:40, 2 March 2018
  • Curlew Limestone Member
    |category2=Pennsylvanian Subsystem |tree22=Pennsylvanian Subsystem
    2 KB (264 words) - 19:54, 27 January 2017
  • Atokan Series
    |category2=Pennsylvanian Subsystem |tree22=Pennsylvanian Subsystem
    3 KB (475 words) - 20:09, 27 January 2017
  • Historical:Anvil Rock Sandstone Member
    |tree22=Pennsylvanian Subsystem |category2=Pennsylvanian Subsystem
    3 KB (397 words) - 15:56, 25 January 2017
  • Litchfield Coal Member
    |category2=Pennsylvanian Subsystem |tree22=Pennsylvanian Subsystem
    2 KB (273 words) - 20:03, 27 January 2017
  • Opdyke Coal Member
    |category2=Pennsylvanian Subsystem |tree22=Pennsylvanian Subsystem
    2 KB (274 words) - 23:03, 20 January 2017
  • Shelbyville Coal Member
    |category2=Pennsylvanian Subsystem |tree22=Pennsylvanian Subsystem
    2 KB (279 words) - 22:57, 20 January 2017
  • Inglefield Sandstone Member
    |category2=Pennsylvanian Subsystem |tree22=Pennsylvanian Subsystem
    2 KB (285 words) - 18:01, 24 January 2017
  • Murray Bluff Sandstone Member
    |category2=Pennsylvanian Subsystem |tree22=Pennsylvanian Subsystem
    2 KB (318 words) - 20:36, 27 January 2017
  • Reynoldsburg Coal Member
    |category2=Pennsylvanian Subsystem |tree22=Pennsylvanian Subsystem
    2 KB (324 words) - 22:14, 27 January 2017
  • Shoal Creek Limestone Member
    |category2=Pennsylvanian Subsystem |tree22=Pennsylvanian Subsystem
    2 KB (327 words) - 16:50, 24 January 2017
  • Rock Island Coal Member
    |category2=Pennsylvanian Subsystem |tree22=Pennsylvanian Subsystem
    4 KB (496 words) - 20:00, 27 January 2017
  • Lonsdale Limestone Member
    |category2=Pennsylvanian Subsystem |tree22=Pennsylvanian Subsystem
    2 KB (317 words) - 21:14, 24 January 2017
  • Exline Limestone Member
    |category2=Pennsylvanian Subsystem |tree22=Pennsylvanian Subsystem
    2 KB (312 words) - 20:45, 24 January 2017
  • Kaskaskia Sequence
    ...ng Valmeyeran Series, the Kaskaskia was extended upward to the base of the Pennsylvanian System (Swann and Willman, 1961).
    3 KB (351 words) - 20:59, 5 January 2017
  • Isabel Sandstone Member
    |category2=Pennsylvanian Subsystem |tree22=Pennsylvanian Subsystem
    8 KB (1,087 words) - 16:30, 9 February 2022
  • Turner Mine Shale Member
    |category2=Pennsylvanian Subsystem |tree22=Pennsylvanian Subsystem
    8 KB (1,131 words) - 16:38, 9 February 2022
  • Assumption Coal Member
    |category2=Pennsylvanian Subsystem |tree22=Pennsylvanian Subsystem
    3 KB (359 words) - 20:06, 27 January 2017
  • Grindstaff Sandstone Member
    |category2=Pennsylvanian Subsystem |tree22=Pennsylvanian Subsystem
    3 KB (350 words) - 22:00, 27 January 2017
  • Wayside Member
    |category2=Pennsylvanian Subsystem |tree22=Pennsylvanian Subsystem
    9 KB (1,289 words) - 16:34, 9 February 2022
  • Historical:Hegeler Till Member
    It is known in only the one locality, where it rests on rocks of Pennsylvanian age and is overlain by the Belgium Member.
    1 KB (159 words) - 16:17, 4 January 2017
  • Modesto Formation
    |category2=Pennsylvanian Subsystem |tree22=Pennsylvanian Subsystem
    4 KB (541 words) - 16:53, 24 January 2017
  • Bankston Fork Limestone Member
    |category2=Pennsylvanian Subsystem |tree22=Pennsylvanian Subsystem
    3 KB (355 words) - 23:06, 24 January 2017
  • Mississippian Subsystem
    ...countries, and the U.S. Geological Survey recognizes the Mississippian and Pennsylvanian Systems as the Carboniferous Systems (Keroher, 1970). The Mississippian System overlies the Devonian System and underlies the Pennsylvanian System. The boundary between the Devonian and Mississippian Systems occurs
    10 KB (1,390 words) - 15:54, 13 January 2017
  • Roodhouse coal bed
    |category2=Pennsylvanian Subsystem |tree22=Pennsylvanian Subsystem
    6 KB (894 words) - 16:17, 9 February 2022
  • Percy Limestone Member
    |category2=Pennsylvanian Subsystem |tree22=Pennsylvanian Subsystem
    8 KB (1,107 words) - 16:39, 9 February 2022
  • Abingdon Coal Member
    |category2=Pennsylvanian Subsystem |tree22=Pennsylvanian Subsystem
    9 KB (1,279 words) - 16:30, 9 February 2022
  • Sellers Limestone Bed
    |category2=Pennsylvanian Subsystem |tree22=Pennsylvanian Subsystem
    8 KB (1,171 words) - 16:34, 9 February 2022
  • Wheeler Coal Member or Bed
    |category2=Pennsylvanian Subsystem |tree22=Pennsylvanian Subsystem
    8 KB (1,214 words) - 16:36, 9 February 2022
  • Big Creek Shale Member
    |category2=Pennsylvanian Subsystem |tree22=Pennsylvanian Subsystem
    7 KB (1,017 words) - 16:15, 9 February 2022
  • Bevier Coal Member or Bed
    |category2=Pennsylvanian Subsystem |tree22=Pennsylvanian Subsystem
    8 KB (1,143 words) - 16:36, 9 February 2022
  • Will Scarlet Shale Member
    |category2=Pennsylvanian Subsystem |tree22=Pennsylvanian Subsystem
    8 KB (1,230 words) - 16:35, 9 February 2022
  • St. David Limestone Member
    |category2=Pennsylvanian Subsystem |tree22=Pennsylvanian Subsystem
    9 KB (1,249 words) - 16:16, 9 February 2022
  • Antioch Limestone Member
    |category2=Pennsylvanian Subsystem |tree22=Pennsylvanian Subsystem
    7 KB (940 words) - 16:38, 9 February 2022
  • Pope Megagroup
    ...at the base of the Aux Vases Sandstone. It is separated from the overlying Pennsylvanian System by a major unconformity that has a relief of as 450 feet. ...ian age that overlie the Mammoth Cave Limestone Megagroup and underlie the Pennsylvanian System and younger rocks (fig. 14).
    3 KB (446 words) - 16:00, 13 January 2017
  • Kerton Creek coal bed
    |category2=Pennsylvanian Subsystem |tree22=Pennsylvanian Subsystem
    6 KB (839 words) - 16:18, 9 February 2022
  • Historical:Pennsylvanian System
    |tree22=Pennsylvanian Subsystem |category2=Pennsylvanian Subsystem
    24 KB (3,468 words) - 22:19, 19 January 2017
  • Historical:Pennsylvanian Subsystem
    |tree22=Pennsylvanian Subsystem |category2=Pennsylvanian Subsystem
    24 KB (3,468 words) - 16:01, 20 January 2017
  • Grove Church Shale
    The formation has been largely eroded from Illinois by pre-Pennsylvanian erosion, and it occurs only in patches in Johnson, Pope, and Saline Countie It has a distinctive fauna; some species have affinities to Pennsylvanian fossils, particularly the fusuline ''Millerella'' and some ostracodes (Coop
    3 KB (430 words) - 16:00, 13 January 2017
  • Spring Lake Coal Member
    |tree22=Pennsylvanian Subsystem Nelson, W.J., P.H. Heckel and J.M. Obrad, 2022, Pennsylvanian Subsystem in Illinois: Illinois State Geological Survey, Bulletin (in press
    6 KB (823 words) - 16:15, 9 February 2022
  • Breezy Hill Limestone Member
    |category2=Pennsylvanian Subsystem |tree22=Pennsylvanian Subsystem
    9 KB (1,205 words) - 16:17, 9 February 2022
  • Bucktown Coal Member
    |tree22=Pennsylvanian Subsystem Nelson, W.J., P.H. Heckel and J.M. Obrad, 2022, Pennsylvanian Subsystem in Illinois: Illinois State Geological Survey, Bulletin (in press
    7 KB (1,034 words) - 16:39, 9 February 2022
  • Excello Shale Member
    |category2=Pennsylvanian Subsystem |tree22=Pennsylvanian Subsystem
    10 KB (1,372 words) - 16:17, 9 February 2022
  • Covel Conglomerate Bed
    |category2=Pennsylvanian Subsystem |tree22=Pennsylvanian Subsystem
    11 KB (1,502 words) - 16:16, 9 February 2022
  • Pennsylvanian Subsystem
    |category2=Pennsylvanian Subsystem |tree22=Pennsylvanian Subsystem
    24 KB (3,539 words) - 16:05, 20 January 2017
  • Anvil Rock Sandstone Member
    |category2=Pennsylvanian Subsystem |tree22=Pennsylvanian Subsystem
    4 KB (474 words) - 16:56, 25 January 2017
  • Mecca Quarry Shale Member
    |category2=Pennsylvanian Subsystem |tree22=Pennsylvanian Subsystem
    11 KB (1,588 words) - 16:29, 9 February 2022
  • Canton Shale Member
    |category2=Pennsylvanian Subsystem |tree22=Pennsylvanian Subsystem
    10 KB (1,407 words) - 16:16, 9 February 2022
  • Anna Shale Member
    |category2=Pennsylvanian Subsystem |tree22=Pennsylvanian Subsystem
    11 KB (1,593 words) - 16:15, 9 February 2022
  • Coxville Sandstone Member
    |category2=Pennsylvanian Subsystem |tree22=Pennsylvanian Subsystem
    9 KB (1,306 words) - 16:35, 9 February 2022
  • Historical:Okaw Group
    ...ER, STUART, and J. M. WELLER, 1939, Preliminary geological maps of the pre-Pennsylvanian formations in part of southwestern Illinois: Illinois State Geological Surv
    2 KB (251 words) - 22:33, 10 January 2017
  • Delafield Member
    |category2=Pennsylvanian Subsystem |tree22=Pennsylvanian Subsystem
    10 KB (1,464 words) - 16:37, 9 February 2022
  • Historical:Drury Shale Member
    |tree22=Pennsylvanian Subsystem
    2 KB (275 words) - 16:21, 25 July 2018
  • Dekoven Coal Member
    |category2=Pennsylvanian Subsystem |tree22=Pennsylvanian Subsystem
    8 KB (1,170 words) - 16:31, 9 February 2022
  • Pounds Sandstone Member
    |category2=Pennsylvanian Subsystem |tree22=Pennsylvanian Subsystem
    9 KB (1,305 words) - 16:31, 9 February 2022
  • Vermilionville Sandstone Member
    |category2=Pennsylvanian Subsystem |tree22=Pennsylvanian Subsystem
    12 KB (1,630 words) - 16:15, 9 February 2022
  • Battery Rock Sandstone Member
    |category2=Pennsylvanian Subsystem |tree22=Pennsylvanian Subsystem
    11 KB (1,561 words) - 16:34, 9 February 2022
  • Lagonda Member
    |category2=Pennsylvanian Subsystem |tree22=Pennsylvanian Subsystem
    11 KB (1,693 words) - 16:37, 9 February 2022
  • Gentry Coal Bed
    |category2=Pennsylvanian Subsystem |tree22=Pennsylvanian Subsystem
    8 KB (1,256 words) - 16:34, 9 February 2022
  • Davis Coal Member
    |category2=Pennsylvanian Subsystem |tree22=Pennsylvanian Subsystem
    12 KB (1,795 words) - 16:31, 9 February 2022
  • Cardiff coal bed
    |category2=Pennsylvanian Subsystem |tree22=Pennsylvanian Subsystem
    9 KB (1,304 words) - 16:30, 9 February 2022
  • Unnamed clastic member - Carbondale Formation
    |category2=Pennsylvanian Subsystem |tree22=Pennsylvanian Subsystem
    8 KB (1,158 words) - 16:36, 9 February 2022
  • Hanover Limestone Member
    |category2=Pennsylvanian Subsystem |tree22=Pennsylvanian Subsystem
    12 KB (1,717 words) - 16:17, 9 February 2022
  • Springfield Coal Member
    |category2=Pennsylvanian Subsystem |tree22=Pennsylvanian Subsystem
    16 KB (2,297 words) - 16:14, 9 February 2022
  • Oak Grove Limestone Member
    |category2=Pennsylvanian Subsystem |tree22=Pennsylvanian Subsystem
    15 KB (2,214 words) - 16:29, 9 February 2022
  • Houchin Creek Coal Member
    |category2=Pennsylvanian Subsystem |tree22=Pennsylvanian Subsystem
    13 KB (1,879 words) - 16:37, 9 February 2022
  • Hegeler Till Member
    It is known in only the one locality, where it rests on rocks of Pennsylvanian age and is overlain by the Belgium Member.
    2 KB (232 words) - 22:47, 12 January 2017
  • Briar Hill Coal Member
    |category2=Pennsylvanian Subsystem |tree22=Pennsylvanian Subsystem
    10 KB (1,577 words) - 16:16, 9 February 2022
  • Galatia Member
    |category2=Pennsylvanian Subsystem |tree22=Pennsylvanian Subsystem
    12 KB (1,803 words) - 16:02, 23 August 2023
  • Historical:Chesterian Series
    ...rending northeast across the state from the Mississippi Valley are beneath Pennsylvanian strata. ...ssippian System. It extends from the major unconformity at the base of the Pennsylvanian System (sub-Absaroka unconformity) down to the base of the Shetlerville Mem
    7 KB (965 words) - 16:17, 10 January 2017
  • Purington Shale Member
    |category2=Pennsylvanian Subsystem |tree22=Pennsylvanian Subsystem
    17 KB (2,452 words) - 16:28, 9 February 2022
  • Pleasantview Sandstone Member
    |category2=Pennsylvanian Subsystem |tree22=Pennsylvanian Subsystem
    10 KB (1,434 words) - 16:18, 9 February 2022
  • Herrin Coal Member
    |category2=Pennsylvanian Subsystem |tree22=Pennsylvanian Subsystem
    18 KB (2,748 words) - 16:35, 9 February 2022
  • Historical:Hunton Limestone Megagroup
    ...gagroup. In other areas, the sub-Absaroka unconformity, at the base of the Pennsylvanian System, truncates all the Devonian strata, so that the megagroup consists e
    3 KB (455 words) - 14:51, 10 January 2017
  • Historical:Clore Formation
    ...s in many more places than are shown in figure M-48. In several areas, sub-Pennsylvanian channels also cut into the Clore.
    3 KB (417 words) - 20:34, 10 January 2017
  • Colchester Coal Member
    |category2=Pennsylvanian Subsystem |tree22=Pennsylvanian Subsystem
    17 KB (2,555 words) - 16:30, 9 February 2022
  • Energy Shale Member
    |category2=Pennsylvanian Subsystem |tree22=Pennsylvanian Subsystem
    16 KB (2,370 words) - 16:39, 9 February 2022
  • Francis Creek Shale Member
    |category2=Pennsylvanian Subsystem |tree22=Pennsylvanian Subsystem
    16 KB (2,366 words) - 16:29, 9 February 2022
  • Carbondale Formation
    |category2=Pennsylvanian Subsystem |tree22=Pennsylvanian Subsystem
    21 KB (3,121 words) - 16:14, 9 February 2022
  • Historical:Baylis Formation
    The Baylis rests unconformably on Mississippian and Pennsylvanian rocks and is overlain unconformably by Pleistocene deposits, generally only
    3 KB (433 words) - 21:44, 21 November 2016
  • Okaw Group
    ...ER, STUART, and J. M. WELLER, 1939, Preliminary geological maps of the pre-Pennsylvanian formations in part of southwestern Illinois: Illinois State Geological Surv
    3 KB (328 words) - 22:31, 13 January 2017
  • Chesterian Series
    ...ssippian System. It extends from the major unconformity at the base of the Pennsylvanian System (sub-Absaroka unconformity) down to the base of the Shetlerville Mem ...rending northeast across the state from the Mississippi Valley are beneath Pennsylvanian strata.
    7 KB (1,034 words) - 15:54, 13 January 2017
  • Historical:St. Louis Limestone
    ...nd thins northwestward to less than 200 feet before being truncated by pre-Pennsylvanian erosion.
    3 KB (473 words) - 15:25, 18 January 2017
  • Seelyville Coal Member
    |category2=Pennsylvanian Subsystem |tree22=Pennsylvanian Subsystem
    21 KB (3,132 words) - 16:14, 9 February 2022
  • Historical:Grover Gravel
    ...area and in Calhoun County, Illinois. In that region the gravel truncates Pennsylvanian and older bedrock formations and was deeply weathered and eroded before dep ...1 to 3 feet of loess overlying 40 feet of the Grover Gravel and 20 feet of Pennsylvanian shale. In the type section the Grover Gravel consists of four units (from t
    7 KB (1,102 words) - 05:46, 28 December 2016
  • Dykersburg Shale Member
    |category2=Pennsylvanian Subsystem |tree22=Pennsylvanian Subsystem
    17 KB (2,584 words) - 19:41, 23 August 2023
  • Survant Coal Member
    |category2=Pennsylvanian Subsystem |tree22=Pennsylvanian Subsystem
    23 KB (3,526 words) - 16:36, 9 February 2022
  • Historical:Menard Limestone
    ...in the northern and northwestern area, beyond which it is truncated by pre-Pennsylvanian erosion (fig. M-46).
    4 KB (566 words) - 20:44, 10 January 2017
  • Walshville Member
    |category2=Pennsylvanian Subsystem |tree22=Pennsylvanian Subsystem
    13 KB (2,002 words) - 16:39, 9 February 2022
  • Grover Gravel
    ...area and in Calhoun County, Illinois. In that region the gravel truncates Pennsylvanian and older bedrock formations and was deeply weathered and eroded before dep ...1 to 3 feet of loess overlying 40 feet of the Grover Gravel and 20 feet of Pennsylvanian shale. In the type section the Grover Gravel consists of four units (from t
    8 KB (1,160 words) - 22:51, 12 January 2017
  • Historical:Kinderhookian Series
    ...Elsewhere along its boundary, it is overlapped by younger Mississippian or Pennsylvanian strata. <br>
    4 KB (627 words) - 21:47, 18 January 2017
  • Hunton Limestone Megagroup
    ...gagroup. In other areas, the sub-Absaroka unconformity, at the base of the Pennsylvanian System, truncates all the Devonian strata, so that the megagroup consists e
    4 KB (530 words) - 17:24, 11 January 2017
  • Baylis Formation
    ...e in western Illinois. The Baylis rests unconformably on Mississippian and Pennsylvanian rocks and is overlain unconformably by Pleistocene deposits, generally only
    3 KB (482 words) - 17:09, 11 January 2017
  • Clore Formation
    ...s in many more places than are shown in figure M-48. In several areas, sub-Pennsylvanian channels also cut into the Clore.
    4 KB (490 words) - 16:24, 13 January 2017
  • Historical:Galena Group
    ...La Salle County, where Galena strata were eroded before deposition of the Pennsylvanian rocks. The Galena is extensively exposed in northern Illinois (fig. O-2B, C
    5 KB (726 words) - 16:41, 12 January 2017
  • St. Louis Limestone
    ...nd thins northwestward to less than 200 feet before being truncated by pre-Pennsylvanian erosion.
    4 KB (560 words) - 15:25, 22 October 2019
  • Menard Limestone
    ...in the northern and northwestern area, beyond which it is truncated by pre-Pennsylvanian erosion (fig. M-46).
    4 KB (639 words) - 16:28, 13 January 2017
  • Historical:Maquoketa Shale Group
    ...he Maquoketa (fig. O-26). The sub-Absaroka unconformity at the base of the Pennsylvanian rocks locally cuts through the Maquoketa along the La Salle Anticline (fig.
    6 KB (800 words) - 22:27, 6 December 2016
  • Kinderhookian Series
    ...Elsewhere along its boundary, it is overlapped by younger Mississippian or Pennsylvanian strata. <br>
    5 KB (699 words) - 22:57, 18 January 2017
  • Historical:Cedar Valley Limestone
    ...in sedimentation. In places the Cedar Valley is overlain unconformably by Pennsylvanian strata.
    6 KB (824 words) - 21:39, 6 January 2017
  • Caseyville Formation
    |category2=Pennsylvanian Subsystem |tree22=Pennsylvanian Subsystem
    54 KB (7,756 words) - 16:31, 9 February 2022
  • Galena Group
    ...La Salle County, where Galena strata were eroded before deposition of the Pennsylvanian rocks. The Galena is extensively exposed in northern Illinois (fig. O-2B, C
    6 KB (813 words) - 20:45, 22 October 2019
  • Maquoketa Shale Group
    ...he Maquoketa (fig. O-26). The sub-Absaroka unconformity at the base of the Pennsylvanian rocks locally cuts through the Maquoketa along the La Salle Anticline (fig.
    6 KB (872 words) - 16:05, 12 January 2017
  • Cedar Valley Limestone
    ...in sedimentation. In places the Cedar Valley is overlain unconformably by Pennsylvanian strata.
    6 KB (895 words) - 17:24, 11 January 2017
  • Historical:Yarmouth Soil
    ...this class have been observed in southern Illinois developed in shales of Pennsylvanian age (e.g., Marion Northwest Section, table 7). Also in this class are soils
    7 KB (1,133 words) - 22:43, 3 January 2017
  • Historical:Cretaceous System
    ...deposited on a nearly flat surface eroded across various Mississippian and Pennsylvanian formations. In southern Illinois, variations in thickness of the Cretaceous
    9 KB (1,278 words) - 18:06, 21 November 2016
  • Yarmouth Soil
    ...this class have been observed in southern Illinois developed in shales of Pennsylvanian age (e.g., Marion Northwest Section, table 7). Also in this class are soils
    8 KB (1,197 words) - 22:33, 12 January 2017
  • Historical:Devonian System
    ...ut if so it was eroded from the northern part of the state, largely before Pennsylvanian
    9 KB (1,405 words) - 20:41, 5 January 2017
  • Historical:Sangamon Soil
    ...Loveland Silt, and the Pearl Formation, but also on bedrock shale units of Pennsylvanian age (Lone Oak Section, table 7) and dolomites and sandstones as old as Ordo
    10 KB (1,487 words) - 22:23, 3 January 2017
  • Cretaceous System
    ...deposited on a nearly flat surface eroded across various Mississippian and Pennsylvanian formations. In southern Illinois, variations in thickness of the Cretaceous
    9 KB (1,353 words) - 16:29, 11 January 2017
  • Devonian System
    ...ut if so it was eroded from the northern part of the state, largely before Pennsylvanian time (fig. D- 1). The upper and lower boundaries of the system in Illinois
    10 KB (1,478 words) - 17:18, 11 January 2017
  • Sangamon Soil
    ...Loveland Silt, and the Pearl Formation, but also on bedrock shale units of Pennsylvanian age (Lone Oak Section, table 7) and dolomites and sandstones as old as Ordo
    10 KB (1,550 words) - 21:13, 12 January 2017
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