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Date Name Thumbnail Size Description Versions
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
16:52, 18 April 2016 94-pl 3.jpg (file) 587 KB Bull. 94 - pl. 3 1
16:37, 19 April 2016 104-Figure 12 Diagram.jpg (file) 593 KB Figure 12 Diagram. 1
16:52, 19 April 2016 104-Figure 15.jpg (file) 595 KB Figure 15 - Lower tongues of the Mason Group Henry and Equality Formation (Ashmore and Peddicord, respectively) beneath the Wedron Group Tiskilwa Formation (Delavan Member) at Charleston Quarry. 1
17:16, 18 April 2016 94-tb 6-c.jpg (file) 598 KB   1
16:54, 19 April 2016 104-Figure 16.jpg (file) 609 KB Figure 16 -- The Morton Tongue of the Peoria Silt beneath the Delavan Member of the Tiskilwa Formation at the Gardena Section. 1
17:21, 18 April 2016 94-tb 6-j.jpg (file) 610 KB   1
16:48, 18 April 2016 94-pl 2.jpg (file) 611 KB Bull. 94 - pl. 2 1
17:22, 18 April 2016 94-tb 6-l.jpg (file) 615 KB   1
17:19, 18 April 2016 94-tb 6-h.jpg (file) 623 KB   1
16:56, 19 April 2016 104-Figure 17.jpg (file) 634 KB Figure 17 -- The Ashmore Tongue of the Henry Formation beneath diamictons of the Delavan Member and undivided Tiskilwa Formation at Wedron Quarry pit 6. 1
17:17, 19 April 2016 104-Figure 25.jpg (file) 638 KB Figure 25 -- Sorted-sediment tongue of the Equality Formation between diamictons of the Batestown Member of the Lemont Formation and the Piatt Member of the Tiskilwa Formation at Wedron Quarry pit 6. 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
17:26, 18 April 2016 94-tb 7-e.jpg (file) 657 KB   1
17:24, 18 April 2016 94-tb 7-a.jpg (file) 663 KB Table 7 -- Described Stratigraphic Sections Previously Published (414 sections from 78 counties are arranged alphabetically, with citation to publication source). 1
17:25, 18 April 2016 94-tb 7-c.jpg (file) 663 KB   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
17:24, 18 April 2016 94-tb 7-b.jpg (file) 666 KB   1
17:25, 18 April 2016 94-tb 7-d.jpg (file) 671 KB   1
17:42, 19 April 2016 104-Figure 27.jpg (file) 673 KB Figure 27 -- Upper tongues of the Peoria Silt and Henry Formation above diamictions of the Yorkville and Batestown Members of the Lemont Formation and the undivided Tiskilwa Formation, which overlie the Elwood Dolomite (Silurian) at the Fox River Stone... 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
17:13, 19 April 2016 104-Figure 23.jpg (file) 673 KB Figure 23 -- Silt loam diamicton (subglacial till) of the Batestown member of the Lemont Formation. 1
17:27, 18 April 2016 94-tb 7-f.jpg (file) 678 KB   1
17:15, 19 April 2016 104-Figure 24.jpg (file) 679 KB Figure 24 -- Silty clay diamicton of the Yorkville Member and silt loam diamicton of the Batestown Member (Lemont Formation) overlie clay loam diamicton of the undivided Tiskliwa Formation at Fox River Stone Quarry, St. Charles, Illinois. The diamicton... 1
17:04, 19 April 2016 104-Figure 21.jpg (file) 702 KB Figure 21 -- A gamma B horizon developed in the upper part of a tongue of the Henry Formation, which occurs beneath jointed, calcareous diamicton of the Wadsworth Formation and above diamicton of the Lemont Formation. The gamma B horizon represents an... 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
17:55, 19 April 2016 104-plate 1.jpg (file) 733 KB Quaternary Deposits of Illinois 1
16:49, 19 April 2016 104-Figure 14.jpg (file) 746 KB Figure 14 -- The Yorkville and Batestown Members of the Lemont Formation, Delavan Member of the Tiskilwa Formation, Robein Member of the Roxana Silt, and Glasford Formation at Higginsville Section. 1
15:27, 1 April 2016 Figure P-1.jpg (file) 753 KB Fig. P-1 -- Thickness of the Pennsylvanian System. 1
15:09, 1 April 2016 Figure P-2.jpg (file) 765 KB Reverted to version as of 14:45, 5 August 2015 3
16:40, 19 April 2016 104-Figure 13a.jpg (file) 771 KB Figure 13a -- Areal distribution of moraines and boundaries of formations and predominant members of the Wedron Group and the Trafalgar Formation in Illinois. (Names of formations and members are labeled on 13b.) Sublobe areas of the Lake Michigan Lobe... 1
17:12, 19 April 2016 104-Figure 22.jpg (file) 783 KB Figure 22 -- Sediment-flow diamicton of the undivided Lemont Formation above a coarsening-upward sand and gravel tongue of the Henry Formation. The unnamed tongue is correlative with the Beverly Tongue, which occurs beneath the Haeger Member of the Lem... 1
17:51, 19 April 2016 104-Figure 30.jpg (file) 801 KB Figure 30 -- Stratified and crossbedded proglacial sand and gravel of the Henry Formation. 1
14:29, 1 April 2016 Figure 12.jpg (file) 808 KB Fig. 12 -- Principal geologic structures of Illinois. 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
16:19, 18 April 2016 94-fig 3.jpg (file) 876 KB Fig. 3 -- Thickness of Pleistocene deposits of Illinois (after Piskin and Bergstrom, 1967). 1
16:15, 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
17:50, 19 April 2016 104-Figure 29.jpg (file) 1,015 KB Figure 29 -- Loess of the Peoria and Roxana Silts above the Sangamon Geosol developed in the Teneriffe Silt (Illinois Episode) at the Pleasant Grove School Section. The modern soil is developed in the upper part of the Peoria Silt. 1
16:36, 19 April 2016 104-Figure 12.jpg (file) 1.04 MB Figure 12 -- Intertongued sorted-sediment units of the Mason Group and diamicton units of the Wedron Group at Wedron Quarry pit 1. Mason Group units are shaded. 1
16:58, 19 April 2016 104-Figure 18.jpg (file) 1.18 MB Figure 18 -- Clayey diamicton of the Wadsworth Formation above oxidized, silty, dolomitic diamicton of the undivided Lemont Formation at the Lemont Section. 1
17:46, 19 April 2016 104-Figure 28.jpg (file) 1.29 MB Figure 28 -- Silty clay diamicton of the Wadsworth Formation exposed in the Lake Michigan bluffs in Illinois. 1
17:19, 19 April 2016 104-Figure 26.jpg (file) 1.29 MB Figure 26 -- Modern soil developed in diamicton of the Yorkville Member of the Lemont Formation above a sand and gravel tongue of the Henry Formation at Wedron Quarry pit 1. 1
17:01, 19 April 2016 104-Figure 20.jpg (file) 1.34 MB Figure 20 -- Unoxidized, silty, dolomitic diamicton of the undivided Lemont Formation exposed in O'hare reservoir excavation. 1
17:52, 19 April 2016 104-Figure 31.jpg (file) 1.39 MB Figure 31 -- Ripple and planar bedded silt, clay, and fine sand of the Equality Formation. 1
17:00, 19 April 2016 104-Figure 19.jpg (file) 1.41 MB Figure 19 -- Diamicton (subglacial till) of the Haeger Member of the Lemont Formation overlies the proglacial (ice proximal) sand and gravel of the Beverly Tongue of the Henry Formation at the Beverly Sand and Gravel Pit Section. 1
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