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Date Name Thumbnail Size Description Versions
17:45, 19 April 2016 104-Figure 27 Diagram.jpg (file) 205 KB Figure 27 Diagram 1
15:50, 19 April 2016 104-Figure 2.jpg (file) 261 KB Figure 2 -- Diagram shows the intertonguing relationships among the Mason Group sorted-sediment units (Roxana and Peoria Silts and Henry and Equality Formations) and between the Mason Group sorted-sediment units and the Wedron Group diamicton units. Th... 1
17:22, 18 April 2016 94-tb 6-m.jpg (file) 261 KB   1
15:57, 19 April 2016 104-Figure 4a.jpg (file) 271 KB Figure 4a -- Lobe and sublobe boundaries in Illinois during the last glaciation (from Willman and Frye 1970). Locations of the ancient Mississippi and Iowa Rivers added. 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
16:42, 18 April 2016 94-fig 12.jpg (file) 290 KB Fig. 12 -- Woodfordian lobes and sublobes in Illinois. 1
15:47, 19 April 2016 104-Figure 1 2.jpg (file) 307 KB Soil Stratigraphy 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, 19 April 2016 104-Figure 13b.jpg (file) 309 KB Figure 13b -- Names of Wedron Group formations and members in Illinois. 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
14:55, 1 April 2016 Figure P-9.jpg (file) 334 KB Fig. P-4 -- Extent of the Caseyville Formation (after Wanless, 1955). 1
16:21, 19 April 2016 104-Figure 7.jpg (file) 336 KB Figure 7 -- History of lithostratigraphic classification of the Wedron Group deposits. 1
16:24, 19 April 2016 104-Figure 9.jpg (file) 345 KB Figure 9 -- History of the litho-stratigraphic classification of the Mason Group deposits with respect to the Wedron Group deposits: (a) Peoria and Roxana Silts, (b) Henry Formation, and (c) Equality Formation. Vertical lines indicate part of section m... 1
16:12, 19 April 2016 104-Figure 5.jpg (file) 357 KB Figure 5 -- Areal distribution of the Wedron Formation till members and the Trafalgar Formation )after Lineback 1979). 1
17:01, 18 April 2016 94-tb 5-.jpg (file) 358 KB Table 5 -- Continued. 1
16:35, 19 April 2016 104-Figure 11.jpg (file) 362 KB Figure 11 Correlation of the Wedron Group formations and members in the Lake Michigan Lobe area (units in Wisconsin from Mickelson et. al. 1984, Mickelson and Syverson, in press; units in Indiana from Bleuer et al. 1983, N.K. Bleuer, Indiana Geological... 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
16:26, 18 April 2016 94-fig 5.jpg (file) 399 KB Fig. 5 -- Sequence of glaciations and interglacial drainage in Illinois. 1
17:11, 18 April 2016 94-tb 5-b.jpg (file) 404 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
17:12, 18 April 2016 94-tb 5-d.jpg (file) 414 KB Table 5 -- Continued. 1
17:11, 18 April 2016 94-tb 5-c.jpg (file) 414 KB Table 5 -- Continued. 1
16:17, 19 April 2016 104-Figure 6.jpg (file) 418 KB Figure 6 -- Diagram shows boundaries and classification of formal units (groups, formations, members) and tongues and informal facies within two intertonguing groups consisting predominantly of diamicton and sorted sediment. Formation A is a lithostrat... 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
16:38, 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
15:46, 19 April 2016 104-Figure 1 1.jpg (file) 445 KB Figure 1 -- Stratigraphic classification of Pleistocene deposits in Illinois (from Willman and Frye 1970). 1
17:13, 18 April 2016 94-tb 5-e.jpg (file) 449 KB Table 5 -- Continued. 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
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
15:52, 19 April 2016 104-Figure 3.jpg (file) 459 KB Figure 3 -- Diagram shows Willman and Frye's (1970) use of arbitrary vertical boundaries to avoid intertonguing of till members with sorted-sediment units in classification of the deposits of the Wisconsinan Stage. 1
16:10, 19 April 2016 104-Figure 4b.jpg (file) 464 KB Figure 4b -- Areal distribution of predominant Quaternary formations and members in Illinois (from Willman and Frye 1970). 1
16:22, 19 April 2016 104-Figure 8.jpg (file) 475 KB Lobe boundaries. 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
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
17:27, 18 April 2016 94-tb 7-g.jpg (file) 525 KB   1
17:21, 18 April 2016 94-tb 6-k.jpg (file) 533 KB   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
16:31, 19 April 2016 104-Figure 10.jpg (file) 536 KB Figure 10 -- Geochronological units, chronostratigraphic units and diachronic units in the Lake Michigan Lobe in a transect from south of Peoria, Illinois, to north of the Straits of Mackinac in Michigan (geochronologic and chronostratigraphic units ar... 1
17:59, 13 April 2016 94-Fig 1.jpg (file) 538 KB Fig. 1 -- Stratigraphic classification of the Pleistocene deposits of Illinois. 1
17:15, 18 April 2016 94-tb 6-a.jpg (file) 546 KB Table 6 -- Stratigraphic Sections 1
17:17, 18 April 2016 94-tb 6-e.jpg (file) 555 KB   1
17:19, 18 April 2016 94-tb 6-g.jpg (file) 555 KB   1
17:18, 18 April 2016 94-tb 6-f.jpg (file) 560 KB   1
17:16, 18 April 2016 94-tb 6-b.jpg (file) 561 KB   1
17:17, 18 April 2016 94-tb 6-d.jpg (file) 564 KB   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
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
17:54, 19 April 2016 104-Figure 32.jpg (file) 569 KB Figure 32 -- Lacustrine silt of the Pedicord Tongue of the Equality Formation above forest litter (including spruce stumps) of the Farmdale Geosol developed in the Robein Member of the Roxana Silt at Charleston Quarry. 1
17:20, 18 April 2016 94-tb 6-i.jpg (file) 570 KB   1
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