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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]

The Bilyeu Member of the Borden Siltstone (Lineback, 1968a, p. 5).

Derivation[edit]

Named for Bilyeu Cemetery, Christian County, about 2 miles north of the type section.

Other names[edit]

History/background[edit]

Type section[edit]

Type location[edit]

The type section of the Bilyeu Member is in the National Petroleum Company No. 1-A Bilyeu, Haldon et al., south well (NW NW SW 10, 13N-1E), where the member is 102 feet thick, extending from 1616 to 1718 feet deep.

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 Bilyeu is 0-150 feet thick and extends in the subsurface through Piatt, De Witt, Macon, Christian, Montgomery, Sangamon, and parts of adjacent counties in central Illinois. The Bilyeu Member extends westward beyond the eastern pinchout of the Burlington and Keokuk Limestones and, therefore, in that area is a member of the Warsaw Shale.

Lithology[edit]

The Bilyeu consists of siltstone that is coarser than most of the Borden and also of fine sandstone.

Core(s)[edit]

Photograph(s)[edit]

Contacts[edit]

Well log characteristics[edit]

Fossils[edit]

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 LINEBACK, J. A., 1968a, Subdivisions and depositional environments of New Albany Shale (Devonian-Mississippian) in Indiana: American Association of Petroleum Geologists Bulletin, v. 52, p. 1291-1303.

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