https://ilstratwiki.web.illinois.edu/index.php?title=Matson_Member&feed=atom&action=historyMatson Member - Revision history2024-03-28T10:19:34ZRevision history for this page on the wikiMediaWiki 1.38.4https://ilstratwiki.web.illinois.edu/index.php?title=Matson_Member&diff=15489&oldid=prevJennifer.Obrad at 18:23, 12 January 20172017-01-12T18:23:37Z<p></p>
<p><b>New page</b></p><div>{{Editwithform}}<br />
{{Tree<br />
|category1=Paleozoic Erathem<br />
|category2=Ordovician System<br />
|category3=Blackriveran Stage<br />
|category4=Tippecanoe Sequence<br />
|category5=Ottawa Limestone Megagroup<br />
|category6=Ancell Group<br />
|category7=Champlainian Series<br />
|category8=Joachim Dolomite<br />
|tree1=Ottawa Limestone Megagroup<br />
|tree2=Ancell Group<br />
|tree3=Joachim Dolomite<br />
|tree4=Matson Member<br />
|tree21=Paleozoic Erathem<br />
|tree22=Ordovician System<br />
|tree23=Champlainian Series<br />
|tree24=Blackriveran Stage<br />
|tree31=Tippecanoe 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 />
H. B. Willman and T. C. Buschbach<br />
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==Name==<br />
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===Original description===<br />
The Matson Member of the Joachim Dolomite (Templeton and Willman, 1963, p. 61).<br />
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===Derivation===<br />
Named for Matson, St. Charles County, Missouri, just east of the type section.<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 of the Matson Member is located in the north bluff of the Missouri Valley (NE NE NE 4, projected, 44N-2E), where the member is 29.8 feet thick.<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 />
The Matson Member overlies the Defiance Member of the Joachim Dolomite.<br />
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==Extent and thickness==<br />
The Matson Member persists throughout the area of the Joachim. In Illinois it is exposed only at West Point Landing in Calhoun County, where it is 21 feet thick. It is about 30 feet thick in the outcrop area, but in subsurface in Illinois it commonly is 15-40 feet thick.<br />
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==Lithology==<br />
The Matson Member differs from the other Joachim Members in being relatively pure, brown, finely porous dolomite that generally appears to be massive but is finely laminated, the laminae separated by thin films of dark brown clay. Locally it contains a few thin beds of the lithologic types common in the Defiance and Augusta Members. The Matson appears to be largely algal in origin.<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 />
In the Matson Member ostracodes occur locally in the basal beds, and a marine fauna with corals, brachiopods, and trilobites has been observed in the basal beds at one locality near Zell, Missouri.<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 />
TEMPLETON, J. S., and H. B. WILLMAN, 1963, Champlainian Series (Middle Ordovician) in Illinois: Illinois State Geological Survey Bulletin 89, 260 p.<br />
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{{Codes<br />
|membercode=8220<br />
|geo_unit=--<br />
}}</div>Jennifer.Obrad