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Date Name Thumbnail Size Description Versions
16:39, 10 January 2017 Tertiary imagemap.jpg (file) 121 KB Tertiary imagemap 1
18:09, 4 April 2016 Table 3.jpg (file) 371 KB 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 Table 2 -- Illinois Mineral Production in 1972 (Malhotra, 1974). 1
18:06, 4 April 2016 Table 1.jpg (file) 241 KB Table 1 -- Source Rocks of Illinois Mineral Resources. 1
15:29, 10 January 2017 Silurian imagemap 4.jpg (file) 101 KB Silurian Imagemap for Southern Illinois 1
15:28, 10 January 2017 Silurian imagemap 3.jpg (file) 76 KB Silurian Imagemap for Western Illinois 1
15:27, 10 January 2017 Silurian imagemap 2.jpg (file) 103 KB Silurian Imagemap for Northwestern Illinois 1
15:26, 10 January 2017 Silurian imagemap 1.jpg (file) 131 KB Silurian Imagemap for Northeastern Illinois 1
17:30, 14 July 2020 Right-Arrow.png (file) 3 KB   1
20:36, 19 January 2017 Quaternary imagemap.jpg (file) 675 KB Image for Quaternary imagemap 1
16:57, 10 August 2015 Pennsylvanian column update.jpg (file) 1.91 MB   1
16:12, 10 August 2015 Pennsylvanian column.jpg (file) 1.13 MB Pennsylvanian Column test 1
19:32, 29 December 2016 Paleozoic imagemap.jpg (file) 63 KB   1
16:48, 4 January 2017 Mesozoic search.jpg (file) 27 KB for the imagepage on the Mesozoic search page 1
19:28, 20 September 2017 Mainpagetime.jpg (file) 97 KB   2
18:39, 29 September 2020 Logo.gif (file) 743 bytes   1
17:30, 14 July 2020 Left-Arrow.png (file) 6 KB   1
13:44, 2 December 2016 Imagemap 2.JPG (file) 103 KB image for imagemap howto 1
13:42, 2 December 2016 Imagemap 1.JPG (file) 62 KB image for image map howto 1
20:09, 5 August 2015 ISGS logo.jpg (file) 178 KB   1
16:55, 13 December 2016 Howto start of form.jpg (file) 99 KB Howto start of form 1
19:56, 13 December 2016 Howto edit sections.JPG (file) 90 KB   1
15:43, 13 December 2016 Howto edit move page settings.jpg (file) 32 KB How to edit move page settings 1
15:49, 13 December 2016 Howto edit move page code.jpg (file) 15 KB How to edit move page code 1
17:54, 10 August 2015 Geologic-time-scale1.jpg (file) 67 KB   1
13:32, 16 October 2019 GOI-ch15-fig15.jpg (file) 1.88 MB   1
18:05, 4 April 2016 Figure T-2.jpg (file) 233 KB Fig. T-2 -- Classification of the Tertiary System. 1
18:04, 4 April 2016 Figure T-1.jpg (file) 209 KB Fig. T-1 -- Distribution of the Mounds and Grover Gravels. 1
17:55, 4 April 2016 Figure S-9.jpg (file) 269 KB 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 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 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 Fig. S-6 -- Columnar section of Silurian System in southern Illinois. 1
17:11, 4 April 2016 Figure S-5.jpg (file) 198 KB 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 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 Fig. S-3 -- Columnar section of Silurian System in northeastern Illinois. 1
13:22, 5 April 2016 Figure S-2F.jpg (file) 1.19 MB Fig. S-2F -- Dense, argillaceous dolomite containing chert nodules characteristic of Racine interreef facies in the Chicago area. The outer, porous parts of the nodules are blackened by air pollutants. 1
13:16, 5 April 2016 Figure S-2E.jpg (file) 1.26 MB Fig. S-2E -- Mottled, porous, pure dolomite characteristic of Racine reef facies in the Chicago area (x 1). 1
13:16, 5 April 2016 Figure S-2D.jpg (file) 1.46 MB Fig. S-2D -- Massive Tete des Morts Formation overlying the Mosalem Formation at the top of Silurian escarpment, 4 miles southeast of Galena, Jo Daviess County. 1
13:15, 5 April 2016 Figure S-2C.jpg (file) 1.38 MB Fig. S-2C -- Massive Marcus Dolomite in a quarry 3 miles east of Fulton, Whiteside County. 1
13:14, 5 April 2016 Figure S-2B.jpg (file) 1.29 MB Fig. S-2B -- Steeply dipping, well bedded dolomite forming the fiank of a Racine (Niagaran) reef, in the Material Service Corporation quarry at Thornton, Cook County. 1
13:14, 5 April 2016 Figure S-2A.jpg (file) 1.33 MB Fig. S-2A -- Massive dolomite in the core of a Racine (Niagaran) reef, at the top of the Material Service Corporation (Stearns) quarry on Archer Avenue at 28th Street, Chicago. 1
18:02, 4 April 2016 Figure S-16.jpg (file) 323 KB Fig. S-16 -- Electric log of the Silurian System. 1
18:00, 4 April 2016 Figure S-15.jpg (file) 322 KB 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 Fig. S-14 -- Thickness of the Alexandrian Series. 1
17:58, 4 April 2016 Figure S-13.jpg (file) 365 KB 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 Fig. S-12 -- Typical Silurian fossils. 1
17:56, 4 April 2016 Figure S-11.jpg (file) 257 KB Fig. S-11 -- North-south cross section of the Silurian System. 1
17:56, 4 April 2016 Figure S-10.jpg (file) 326 KB Fig. S-10 -- Development of the classification of the Silurian System in southern Illinois. 1
17:02, 4 April 2016 Figure S-1.jpg (file) 883 KB Fig. S-1 -- Silurian System thickness, outcroup areas, nomenclature boundary, and reef in the Moccasin Springs Formation. 1
15:58, 4 April 2016 Figure Q-9.jpg (file) 248 KB Fig. Q-9 -- Woodfordian lobes and sublobes in Illinois (Willman and Frye, 1970). 1
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