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Date Name Thumbnail Size User Description Versions
18:31, 4 April 2016 Figure D-3D.jpg (file) 732 KB Alan.Myers Fig. D-3D -- Fine-grained, fossiliferous limestone characteristic of Cedar Valley Limestone in the Rock Island area, Rock Island County (x1). 1
18:29, 4 April 2016 Figure D-3C.jpg (file) 601 KB Alan.Myers Fig. D-3C -- Cedar Valley (CV) and Wapsipinicon (W) Limestone in Collinson Stone Company Quarry, 1 mile southeast of Milan, Rock Island County. The Rock face is about 70 feet high. 2
18:22, 4 April 2016 Figure D-3B.jpg (file) 690 KB Alan.Myers Fig. D-3B -- Bailey Limestone in Pine Hills (Mississippi River bluffs), 5 miles north of Wolf Lake, Union County. 1
18:21, 4 April 2016 Figure D-3A.jpg (file) 1.04 MB Alan.Myers Fig. D-3A -- Middle Devonian Limestone (Lingle and Grand Tower) in ridge ("the Backbone") along the Mississippi River north of Grand Tower, Jackson County (from Worthen, 1868, opp. p. 61). 1
18:18, 4 April 2016 Figure C-1D.jpg (file) 776 KB Alan.Myers Fig. C-1D -- Core of Ironton Sandstone showing flat-pebble conglomerate; from boring in Champaign county (x2). 1
18:17, 4 April 2016 Figure C-1C.jpg (file) 788 KB Alan.Myers 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
18:15, 4 April 2016 Figure C-1B.jpg (file) 1.18 MB Alan.Myers 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
18:12, 4 April 2016 Figure C-1A.jpg (file) 1,023 KB Alan.Myers Fig. C1-A -- Massive Potosi Dolomite in a quarry 4 miles northwest of Ashton, Ogle County. 1
18:09, 4 April 2016 Table 3.jpg (file) 371 KB Alan.Myers Table 3 -- Alphabetic list of named cyclothems in Illinois, showing formation, distribution, and principal references (after Kosanke et al., 1960). 1
18:07, 4 April 2016 Table 2.jpg (file) 236 KB Alan.Myers Table 2 -- Illinois Mineral Production in 1972 (Malhotra, 1974). 1
18:06, 4 April 2016 Table 1.jpg (file) 241 KB Alan.Myers Table 1 -- Source Rocks of Illinois Mineral Resources. 1
18:05, 4 April 2016 Figure T-2.jpg (file) 233 KB Alan.Myers Fig. T-2 -- Classification of the Tertiary System. 1
18:04, 4 April 2016 Figure T-1.jpg (file) 209 KB Alan.Myers Fig. T-1 -- Distribution of the Mounds and Grover Gravels. 1
18:02, 4 April 2016 Figure S-16.jpg (file) 323 KB Alan.Myers Fig. S-16 -- Electric log of the Silurian System. 1
18:00, 4 April 2016 Figure S-15.jpg (file) 322 KB Alan.Myers Fig. S-15 -- Thickness of teh Niagaran Series; includes the Cayugan Series in southern Illinois. 1
17:59, 4 April 2016 Figure S-14.jpg (file) 328 KB Alan.Myers Fig. S-14 -- Thickness of the Alexandrian Series. 1
17:58, 4 April 2016 Figure S-13.jpg (file) 365 KB Alan.Myers Fig. S-13 -- Thickness of the Hunton Limestone Megagroup (modified from Bond et al., 1971). 1
17:57, 4 April 2016 Figure S-12.jpg (file) 1.54 MB Alan.Myers Fig. S-12 -- Typical Silurian fossils. 1
17:56, 4 April 2016 Figure S-11.jpg (file) 257 KB Alan.Myers Fig. S-11 -- North-south cross section of the Silurian System. 1
17:56, 4 April 2016 Figure S-10.jpg (file) 326 KB Alan.Myers Fig. S-10 -- Development of the classification of the Silurian System in southern Illinois. 1
17:55, 4 April 2016 Figure S-9.jpg (file) 269 KB Alan.Myers Fig. S-9 -- Development of the classification of the Silurian System in western Illinois. 1
17:54, 4 April 2016 Figure S-8.jpg (file) 319 KB Alan.Myers Fig. S-8 -- Development of the classification of the Silurian System in northwestern Illinois. 1
17:53, 4 April 2016 Figure S-7.jpg (file) 329 KB Alan.Myers Fig. S-7 -- Development of the classification of the Silurian System in northeastern Illinois. 1
17:52, 4 April 2016 Figure S-6.jpg (file) 209 KB Alan.Myers Fig. S-6 -- Columnar section of Silurian System in southern Illinois. 1
17:11, 4 April 2016 Figure S-5.jpg (file) 198 KB Alan.Myers Fig. S-5 -- Columnar section of the Silurian System in western Illinois. 1
17:03, 4 April 2016 Figure S-4.jpg (file) 219 KB Alan.Myers Fig. S-4 -- Columnar section of the Silurian System in northwestern Illinois. 1
17:03, 4 April 2016 Figure S-3.jpg (file) 254 KB Alan.Myers Fig. S-3 -- Columnar section of Silurian System in northeastern Illinois. 1
17:02, 4 April 2016 Figure S-1.jpg (file) 883 KB Alan.Myers Fig. S-1 -- Silurian System thickness, outcroup areas, nomenclature boundary, and reef in the Moccasin Springs Formation. 1
16:00, 4 April 2016 Figure Q-10.jpg (file) 860 KB Alan.Myers Fig. Q-10 -- Woodfordian glacial moraines in Illinois (Willman and Frye, 1970). 2
15:58, 4 April 2016 Figure Q-9.jpg (file) 248 KB Alan.Myers Fig. Q-9 -- Woodfordian lobes and sublobes in Illinois (Willman and Frye, 1970). 1
15:56, 4 April 2016 Figure Q-8.jpg (file) 651 KB Alan.Myers Fig. Q-8 -- Diagrammatic cross section showing the relations of the formations and members of Wisconsinan age in northern and western Illinois (Willman and Frye, 1970). 1
15:55, 4 April 2016 Figure Q-7.jpg (file) 647 KB Alan.Myers Fig. Q-7 -- Diagrammatic cross section showing the relations of the formations and members of Illinoian age in central and western Illinois (Willman and Frye, 1970). 1
15:53, 4 April 2016 Figure Q-6.jpg (file) 477 KB Alan.Myers Fig. Q-6 -- Development of classification of the Wisconsinan Stage in Illinois. 1
15:53, 4 April 2016 Figure Q-5.jpg (file) 1.68 MB Alan.Myers Fig. Q-5 -- Areal distribution of the dominantly till formations and members of Illinois (after Willman and Frye, 1970; Johnson et al., 1972). 1
15:51, 4 April 2016 Figure Q-4.jpg (file) 613 KB Alan.Myers Fig. Q-4 -- Classification of the Pleistocene Series. 1
15:42, 4 April 2016 Figure Q-3.jpg (file) 1.55 MB Alan.Myers Fig. Q-3 -- Generalized thickness of the Quaternary deposits of Illinois (after Piskin and Bergstrom, 1967; Willman and Frye, 1970). 1
15:41, 4 April 2016 Figure Q-2.jpg (file) 1.76 MB Alan.Myers Fig. Q-2 -- Glacial map of Illinois (after Willman and Frye, 1970). 1
15:14, 4 April 2016 Figure Pc-1.jpg (file) 328 KB Alan.Myers Fig. Pc-1 -- Structure on top of the Precambrian basement. 1
15:13, 4 April 2016 Figure O-27.jpg (file) 605 KB Alan.Myers Fig. O-27 -- Development of the classification of the Cincinnatian Series. 1
15:11, 4 April 2016 Figure O-26.jpg (file) 752 KB Alan.Myers Fig O-26 -- Thickness of the Maquoketa Group. 1
15:05, 4 April 2016 Figure O-25.jpg (file) 492 KB Alan.Myers Fig. O-25 -- Columnar section of the Cincinnatian Series (after Templeton and Willman, 1963). 1
15:04, 4 April 2016 Figure O-24.jpg (file) 550 KB Alan.Myers Fig. O-24 -- Diagrammatic cross section of the Galena Group showing the principal faunal zones and bentonite beds (after Templeton and Willman, 1963). 1
15:03, 4 April 2016 Figure O-23.jpg (file) 368 KB Alan.Myers Fig. O-23 -- Diagrammatic cross section showing the facies in the Galena Group. (after Templeton and Willman, 1963). 1
15:02, 4 April 2016 Figure O-22.jpg (file) 384 KB Alan.Myers Fig. O-22 -- Columnar section of the Galena Group (after Templeton and Willman, 1963). 1
15:01, 4 April 2016 Figure O-21.jpg (file) 782 KB Alan.Myers Fig. O-21 -- Thickness of the Galena Group. 1
15:00, 4 April 2016 Figure O-20.jpg (file) 385 KB Alan.Myers Fig. O-21 -- Columnar Section of the Platteville GRoup (after Templeton and Willman, 1963). 1
14:59, 4 April 2016 Figure O-19.jpg (file) 743 KB Alan.Myers Fig. O-19 -- Thickness of the Platteville Group. 1
14:58, 4 April 2016 Figure O-18.jpg (file) 306 KB Alan.Myers Fig. O-18 -- Thickness of the Dutchtown Limestone and Joachim Dolomite and the distribution of the Starved Rock Sandstone Member of the St. Peter Sandstone and the Glenwood Formation. 1
14:56, 4 April 2016 Figure O-17.jpg (file) 282 KB Alan.Myers Fig. O-17 -- Thickness of the St. Peter Sandstone. 1
14:56, 4 April 2016 Figure O-16.jpg (file) 388 KB Alan.Myers Fig. O-16 -- Diagrammatic cross section of the Ancell Group (after Templeton and Willman, 1963). 1
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