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Date Name Thumbnail Size Description Versions
14:29, 1 April 2016 Figure 12.jpg (file) 808 KB Fig. 12 -- Principal geologic structures of Illinois. 1
14:50, 1 April 2016 Figure P-3A.jpg (file) 566 KB Fig. P-3A -- Battery Rock Sandstone Member of the Caseyville Formation capping an escarpment 8 miles north of Cave in Rock, Hardin County. 2
14:55, 1 April 2016 Figure P-9.jpg (file) 334 KB Fig. P-4 -- Extent of the Caseyville Formation (after Wanless, 1955). 1
15:09, 1 April 2016 Figure P-2.jpg (file) 765 KB Reverted to version as of 14:45, 5 August 2015 3
15:27, 1 April 2016 Figure P-1.jpg (file) 753 KB Fig. P-1 -- Thickness of the Pennsylvanian System. 1
15:31, 1 April 2016 Figure P-7.jpg (file) 276 KB Fig. P-7 -- Arrangement of lithologic units in a cyclothem (after Willman and Payne, 1942). 1
15:36, 1 April 2016 Figure P-8.jpg (file) 714 KB Fig. P-8 -- Structure of the top of the Herrin (No. 6) Coal Member (based on map by K. E. Clegg). 1
15:38, 1 April 2016 Figure P-10.jpg (file) 507 KB Fig. P-10 -- Combined thickness of the Caseyville, Abbott, and Spoon Formations (after Walness, 1955) 1
15:39, 1 April 2016 Figure P-14.jpg (file) 535 KB Fig. P-14 -- Thickness of the Modesto Formation (based on map by K. E. Clegg). 1
15:41, 1 April 2016 Figure P-15.jpg (file) 457 KB Fig. P-15 -- Thickness of the Bond Formation (based on map by K. E. Clegg). 1
15:42, 1 April 2016 Figure P-16.jpg (file) 320 KB Fig. P-16 -- Thickness of the Mattoon Formation (based on map by K. E. Clegg). 1
17:59, 13 April 2016 94-Fig 1.jpg (file) 538 KB Fig. 1 -- Stratigraphic classification of the Pleistocene deposits of Illinois. 1
16:15, 18 April 2016 94-fig 2.jpg (file) 893 KB Fig. 2 -- Generalized areal geology of the bedrock surface of Illinois. (see Willman et at., 1967, for more detailed mapping). 1
16:19, 18 April 2016 94-fig 3.jpg (file) 876 KB Fig. 3 -- Thickness of Pleistocene deposits of Illinois (after Piskin and Bergstrom, 1967). 1
16:21, 18 April 2016 94-fig 4.jpg (file) 858 KB Fig. 4 -- Topography of the bedrock surface of Illinois (after Horberg, 1950, and others). 1
16:26, 18 April 2016 94-fig 5.jpg (file) 399 KB Fig. 5 -- Sequence of glaciations and interglacial drainage in Illinois. 1
16:28, 18 April 2016 94-fig 6.jpg (file) 665 KB Fig. 6 -- Areal distribution of the dominantly till formations and members of Illinois. 1
16:30, 18 April 2016 94-fig 7.jpg (file) 567 KB Fig. 7 -- Diagrammatic cross section showing the relations of formations and members of Illinoian age in western Illinois. 1
16:32, 18 April 2016 94-fig 8.jpg (file) 575 KB Fig. 8 -- Diagrammatic cross section showing the relations of formations and members of Wisconsinan age in northern and western Illinois. 1
16:38, 18 April 2016 94-fig 9.jpg (file) 438 KB Fig. 9 -- Glacial lakes of Illinois. These are the principal areas of the Equality Formation, with the exception of Lake McKee and possibly Lake Brussels. Areas of lakes overridden by glaciers are not shown. 1
16:40, 18 April 2016 94-fig 10.jpg (file) 673 KB Fig. 10 -- Generalized map of floodplains of modern rivers and streams of Illinois. Principal areas of Cahokia Alluvium. 1
16:41, 18 April 2016 94-fig 11.jpg (file) 309 KB Fig. 11 -- Major areas of wind-blown sand in Illinois. Principal areas of Parkland Sand. 1
16:42, 18 April 2016 94-fig 12.jpg (file) 290 KB Fig. 12 -- Woodfordian lobes and sublobes in Illinois. 1
16:44, 18 April 2016 94-fig 13.jpg (file) 431 KB Fig. 13 -- Major steps in development of the stratigraphic classification of the Wisconsinan deposits of Illinois (after Frye and Willman, 1963). 1
16:45, 18 April 2016 94-fig 14.jpg (file) 398 KB Fig. 14 -- Time-space diagram showing glacial deposits, soils, and stratigraphically significant radio-carbon dates in the Wisconsinan and Holocene Stages in Illinois. 1
16:48, 18 April 2016 94-pl 2.jpg (file) 611 KB Bull. 94 - pl. 2 1
16:52, 18 April 2016 94-pl 3.jpg (file) 587 KB Bull. 94 - pl. 3 1
16:54, 18 April 2016 94-tb 1.jpg (file) 657 KB Table 1 -- Selected Stratigraphically Significant Radiocarbon Dates From Illinois (94 dates from 30 counties). 1
16:55, 18 April 2016 94-tb 2.jpg (file) 508 KB Table 2 -- Typical Compositions of Glacial Till Units. 1
16:57, 18 April 2016 94-tb 3.jpg (file) 516 KB Table 3 -- Composition of Wedron Formation (X-ray analyses by H. D. Glass, Illinois State Geological Survey). 1
16:59, 18 April 2016 94-tb 4.jpg (file) 452 KB Table 4 -- Averages of Analyses of Selected Heavy and Light Minerals (Analyses of size fraction 0.062-0.250 mm). (From Frye, Glass, and Willman, 1962; Frye, Willman, and Glass, 1964; Willman, Glass, and Frye, 1963) 1
17:01, 18 April 2016 94-tb 5-.jpg (file) 358 KB Table 5 -- Continued. 1
17:10, 18 April 2016 94-tb 5-a.jpg (file) 410 KB Table 5 -- Selected Analyses from Stratigraphic Sections Described in Table 6 (X-ray analyses by H. D. Glass, Illinois State Geological Survey). 1
17:11, 18 April 2016 94-tb 5-b.jpg (file) 404 KB Table 5 - Continued. 1
17:11, 18 April 2016 94-tb 5-c.jpg (file) 414 KB Table 5 -- Continued. 1
17:12, 18 April 2016 94-tb 5-d.jpg (file) 414 KB Table 5 -- Continued. 1
17:13, 18 April 2016 94-tb 5-e.jpg (file) 449 KB Table 5 -- Continued. 1
17:15, 18 April 2016 94-tb 6-a.jpg (file) 546 KB Table 6 -- Stratigraphic Sections 1
17:16, 18 April 2016 94-tb 6-b.jpg (file) 561 KB   1
17:16, 18 April 2016 94-tb 6-c.jpg (file) 598 KB   1
17:17, 18 April 2016 94-tb 6-d.jpg (file) 564 KB   1
17:17, 18 April 2016 94-tb 6-e.jpg (file) 555 KB   1
17:18, 18 April 2016 94-tb 6-f.jpg (file) 560 KB   1
17:19, 18 April 2016 94-tb 6-g.jpg (file) 555 KB   1
17:19, 18 April 2016 94-tb 6-h.jpg (file) 623 KB   1
17:20, 18 April 2016 94-tb 6-i.jpg (file) 570 KB   1
17:21, 18 April 2016 94-tb 6-j.jpg (file) 610 KB   1
17:21, 18 April 2016 94-tb 6-k.jpg (file) 533 KB   1
17:22, 18 April 2016 94-tb 6-l.jpg (file) 615 KB   1
17:22, 18 April 2016 94-tb 6-m.jpg (file) 261 KB   1
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