https://ilstratwiki.web.illinois.edu/index.php?title=Opdyke_Coal_Member&feed=atom&action=historyOpdyke Coal Member - Revision history2024-03-28T19:19:45ZRevision history for this page on the wikiMediaWiki 1.38.4https://ilstratwiki.web.illinois.edu/index.php?title=Opdyke_Coal_Member&diff=16002&oldid=prevJennifer.Obrad at 23:03, 20 January 20172017-01-20T23:03:41Z<p></p>
<p><b>New page</b></p><div>{{Editwithform}}<br />
{{Tree<br />
|category1=Paleozoic Erathem<br />
|category2=Pennsylvanian Subsystem<br />
|category3=Absaroka Sequence<br />
|category4=McLeansboro Group<br />
|category5=Missourian Series<br />
|category6=Mattoon Formation<br />
|category7=Coal<br />
|tree1=McLeansboro Group<br />
|tree2=Mattoon Formation<br />
|tree3=Opdyke Coal Member<br />
|tree21=Paleozoic Erathem<br />
|tree22=Pennsylvanian Subsystem<br />
|tree23=Missourian Series<br />
|tree31=Absaroka Sequence<br />
}}<br />
==Primary source==<br />
Willman, H. B., Elwood Atherton, T. C. Buschbach, Charles Collinson, John C. Frye, M. E. Hopkins, Jerry A. Lineback, and Jack A. Simon, 1975, Handbook of Illinois Stratigraphy: Illinois State Geological Survey Bulletin 95, 261 p.<br />
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==Contributing author&#40;s&#41;==<br />
M. E. Hopkins and J. A. Simon<br />
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==Name==<br />
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===Original description===<br />
The Opdyke Coal Member of the Mattoon Formation (Cady et al., 1952, p. 90-91).<br />
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===Derivation===<br />
Named for the village of Opdyke, Jefferson County.<br />
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===Other names===<br />
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===History&#47;background===<br />
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==Type section==<br />
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===Type location===<br />
The type section is in small mines in the vicinity of Belle Rive and Opdyke (3S-4E).<br />
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===Type author&#40;s&#41;===<br />
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===Type status===<br />
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==Reference section==<br />
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===Reference location===<br />
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===Reference author&#40;s&#41;===<br />
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===Reference status===<br />
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==Stratigraphic relationships==<br />
It lies about 430 feet above the Shoal Creek Limestone and is tentatively correlated with a 12-inch coal that crops out on the Louden Anticline in eastern Fayette County, 60-70 feet above the Millersville Limestone.<br />
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==Extent and thickness==<br />
In the type locality the Opdyke is fairly extensive and as much as 2 feet thick locally. It crops out in eastern and southeastern Jefferson County and northwestern Hamilton County. It is believed to be extensive in the subsurface of central Illinois. <br />
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==Lithology==<br />
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==Core&#40;s&#41;==<br />
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==Photograph&#40;s&#41;==<br />
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==Contacts==<br />
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==Well log characteristics==<br />
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==Fossils==<br />
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==Age and correlation==<br />
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==Environments of deposition==<br />
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==Economic importance==<br />
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==Remarks==<br />
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==References==<br />
CADY, G. H., et al., 1952, Minable coal reserves of Illinois: Illinois State Geological Survey Bulletin 78, 138 p.<br />
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{{Codes<br />
|membercode=1780<br />
|geo_unit=--<br />
}}</div>Jennifer.Obrad