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Lithostratigraphy
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Chronostratigraphy
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Allostratigraphy
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Hydrostratigraphy
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Primary source[edit]

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.

Contributing author(s)[edit]

Elwood Atherton, Charles Collinson, and Jerry A. Lineback

Name[edit]

Original description[edit]

Degonia Sandstone (S. Weller, 1920, p. 281-290).

Derivation[edit]

Named for Degonia Township, Jackson County.

Other names[edit]

History/background[edit]

Type section[edit]

Type location[edit]

The type section of the Degonia Sandstone is in the bluffs of the Mississippi River and small tributaries (12-16, 21-25, 8S--5W).

Type author(s)[edit]

Type status[edit]

Reference section[edit]

Reference location[edit]

Reference author(s)[edit]

Reference status[edit]

Stratigraphic relationships[edit]

Extent and thickness[edit]

The unit ranges from 150 feet of massive sandstone in western Illinois to as little as 20 feet of shale in the southeast (fig.M-49). <center> {| class="wikitable" style="text-align: center;" |- |<gallery caption="" widths=250px heights=250px perrow=4> Figure_M-49.jpg|{{file:Figure_M-49.jpg}} </gallery> |} </center>

Lithology[edit]

The Degonia is a clastic unit, dominantly sandstone. Typically, it includes two well developed, lenticular beds of massive sandstone. The upper overlaps the lower and both are absent locally. Most of the shale is gray to dark gray, but an extensive bed of red shale occurs at the top of the formation. Thick elongate and thin sheet sand bodies occur in a dendritic pattern (Potter, 1963). A north-south sandstone body, locally more than 15 miles wide, is joined from the east by southwest-trending bodies that fill channel distributaries. In the thick bodies, the sandstone typically is white and fine grained (Atherton, 1947). In southwestern Illinois thin coal beds occur locally near the top and middle of the formation.

Core(s)[edit]

Photograph(s)[edit]

Contacts[edit]

Well log characteristics[edit]

Fossils[edit]

The Degonia contains plant remains, with ''Lepidodendron'' the most common.

Age and correlation[edit]

Environments of deposition[edit]

Economic importance[edit]

Remarks[edit]

Reference(s)[edit]

place a <pre><br></pre>at the end of a line to get a line return ATHERTON, ELWOOD, 1947, Some Chester outcrop and subsurface sections in southeastern Illinois: Illinois Academy of Science Transactions., v. 40, p. 122-131; 1948, Illinois State Geological Survey Circular 144.<br> POTTER, P. E., 1963, Late Paleozoic sandstones of the Illinois Basin: Illinois State Geological Survey Report of Investigations 217, 92 p.<br> WELLER, STUART, 1920, Chester Series in Illinois: Journal of Geology, v. 28, p. 281-303, 395-416.

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