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Date Name Thumbnail Size Description Versions
15:46, 11 July 2020 C605-Figure-48.jpg (file) 321 KB   1
17:39, 11 July 2020 C605-Figure-49.jpg (file) 428 KB   1
17:40, 11 July 2020 C605-Figure-50.jpg (file) 505 KB   1
17:41, 11 July 2020 C605-Figure-51.jpg (file) 526 KB   1
17:42, 11 July 2020 C605-Figure-52.jpg (file) 590 KB   1
17:43, 11 July 2020 C605-Figure-53.jpg (file) 505 KB   1
17:44, 11 July 2020 C605-Figure-54.jpg (file) 591 KB   1
17:46, 11 July 2020 C605-Figure-55.jpg (file) 554 KB   1
17:47, 11 July 2020 C605-Figure-56.jpg (file) 705 KB   1
17:49, 11 July 2020 C605-Figure-57.jpg (file) 626 KB   1
17:50, 11 July 2020 C605-Figure-58.jpg (file) 619 KB   1
17:52, 11 July 2020 C605-Figure-59.jpg (file) 345 KB   1
17:58, 11 July 2020 C605-Figure-60.jpg (file) 713 KB   1
17:59, 11 July 2020 C605-Figure-61.jpg (file) 237 KB   1
21:03, 17 July 2020 C605-Plate-01.jpg (file) 1.04 MB   2
18:59, 9 July 2020 C605-Plate 2 - Galatia Channel Xsec Saline Co.jpg (file) 1.37 MB   1
18:35, 9 July 2020 C605-Plate 2 - Galatia Channel Xsec Saline Co map.jpg (file) 607 KB   1
19:25, 9 July 2020 C605-Plate 3 -Galatia Chanel Xsec Wabash Co.jpg (file) 1.36 MB   1
19:23, 9 July 2020 C605-Plate 3 - Galatia Channel Xsec Wabash Co map.jpg (file) 629 KB   1
19:53, 10 July 2020 C605-Plate 4 - Effingham Channel Olney Xsec.jpg (file) 1.33 MB   1
19:56, 10 July 2020 C605-Plate 4 - Effingham Channel Olney Xsec map.jpg (file) 564 KB   1
19:58, 10 July 2020 C605-Plate 5 - Effingham Channel Stewardson Xsec.jpg (file) 1.42 MB   1
19:59, 10 July 2020 C605-Plate 5 - Effingham Channel Stewardson Xsec map.jpg (file) 770 KB   1
20:02, 10 July 2020 C605-Plate 6 - Leslie Cemetery Channel Xsec.jpg (file) 1.24 MB   1
20:03, 10 July 2020 C605-Plate 6 - Leslie Cemetery Channel Xsec map.jpg (file) 540 KB   1
17:27, 3 March 2017 Cenozoic search.jpg (file) 45 KB   2
13:51, 10 January 2017 Devonian imagepage.jpg (file) 94 KB Devonian imagemap 1
16:24, 31 March 2016 Figure 1.jpg (file) 661 KB Fig. 1 -- Summary of the age, origin, and thickness of Illinois rocks. 1
15:57, 1 April 2016 Figure 11.jpg (file) 1.89 MB Fig. 11 -- Generalized surficial geology of Illinois. In uneroded areas the loess thins from 25-100 feet thick in the bluffs of the major valleys to 1-2 feet in areas farthest from valleys. 1
19:35, 1 April 2016 Figure 13.jpg (file) 574 KB Fig. 13 -- Geologic cross section along the lines shown in figure 12 (after Willman er al., 1967). 1
19:36, 1 April 2016 Figure 14.jpg (file) 1.08 MB Fig. 14 -- Pre-Pennsylvanian megagroups and sequences of Illinois (Swann and Willman, 1961). 1
19:38, 1 April 2016 Figure 15.jpg (file) 1.73 MB Fig. 15 -- Topography of the bedrock surface of Illinois (after Horberg, 1950a and Willman and Frye, 1970). 1
19:39, 1 April 2016 Figure 16.jpg (file) 610 KB Fig. 16 -- Development of the stratigraphic classifications used in Illinois. The references include reports that introduced changes in the classification and others that show typical usage. 1
19:40, 1 April 2016 Figure 17.jpg (file) 301 KB Fig. 17 -- Patterns and symbols used in figures. 1
15:46, 1 April 2016 Figure 3.jpg (file) 273 KB Fig. 3 -- Geologic map of Illinois by James Hall (1843). 1
15:49, 1 April 2016 Figure 4.jpg (file) 274 KB Fig. 4 -- Index to volumes issued by the Geological Survey of Illinois (Worthen Survey) in which individual counties are described. 1
15:50, 1 April 2016 Figure 5.jpg (file) 350 KB Fig. 5 -- Geologic map of Illinois by A. H. Worthen (1875). 1
15:51, 1 April 2016 Figure 6.jpg (file) 344 KB Fig. 6 -- Geologic map of Illinois by Stuart Weller (1907). 1
15:52, 1 April 2016 Figure 7.jpg (file) 762 KB Fig. 7 -- Physiographic divisions of Illinois (after Leighton et al., 1948). 1
15:53, 1 April 2016 Figure 8.jpg (file) 834 KB Fig. 8 -- Topography and rivers of Illinois. 1
15:54, 1 April 2016 Figure 9.jpg (file) 895 KB Fig. 9 -- Index map showing counties and townships. 1
19:48, 1 April 2016 Figure C-10.jpg (file) 204 KB Fig. C-10 -- Thickness of the Ironton and Galesville Sandstones. 1
19:49, 1 April 2016 Figure C-11.jpg (file) 263 KB Fig. C- 11 -- Thickness of the Franconia Formation 1
19:50, 1 April 2016 Figure C-12.jpg (file) 298 KB Fig. C-12 -- Thickness of the Potosi Dolomite. 1
19:51, 1 April 2016 Figure C-13.jpg (file) 293 KB Fig. C-13 -- Thickness of the Eminence Formation. 1
18:12, 4 April 2016 Figure C-1A.jpg (file) 1,023 KB Fig. C1-A -- Massive Potosi Dolomite in a quarry 4 miles northwest of Ashton, Ogle County. 1
18:15, 4 April 2016 Figure C-1B.jpg (file) 1.18 MB Fig. C-1B -- Cambrian-Ordovician unconformity showing well bedded Oneota Dolomite overlying massive Potosi Dolomite in a quarry in Lee County, 6 miles south of Rochelle, Ogle County (Willman and Templeton, 1951, p. 113). 1
18:17, 4 April 2016 Figure C-1C.jpg (file) 788 KB Fig. C-1C -- Core of Eau Clair Formation showing penecontemporaneous deformation of shale beds in shaly sanstone; from a boring in Champaign County (x2). 1
18:18, 4 April 2016 Figure C-1D.jpg (file) 776 KB Fig. C-1D -- Core of Ironton Sandstone showing flat-pebble conglomerate; from boring in Champaign county (x2). 1
19:41, 1 April 2016 Figure C-2.jpg (file) 321 KB Fig. C-2 --Thickness of the Cambrian System. The dashed lines show reconstructed thickness. 1
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