Stratigraphic correlations of Seelyville, De Koven, and Davis coals (Desmoinesian) of Illinois Basin Coalfield

Conference · Thu Sep 01 04:00:00 EDT 1983 · Am. Assoc. Pet. Geol., Bull.; (United States)

OSTI ID:6575158

Jacobson, R J

The Seelyville, De Koven, and Davis Coal Members (Spoon and Staunton Formations, Illinois and Indiana) or beds (Carbondale Formation, western Kentucky) presently are considered stratigraphically separate seams of restricted regional extent in the basin. Recent subsurface investigation reveals that the De Koven and Davis Coals are splits of the Seelyville Coal. A 170-mi-long (275-km) cross section, with an average of one well per mile, links the type Seelyville of west-central Indiana with type Davis (Western Kentucky No. 6) and De Koven (Western Kentucky No. 7) coals of western Kentucky. Geophysical logs formed the basis of the correlations. In its type area, the Seelyville Coal contains several partings of shale, one of which is fairly continuous but variable in thickness, ranging from less than 1 in. (2.5 cm) to more than 20 ft (6 m). Southward, this parting continues as a clastic wedge (more than 100 ft, 30 m, thick in some places) that separates the De Koven coal (above) from the Davis Coal (below) in their area of outcrop in southeastern Illinois. Knowledge that these coals are equivalent rather than separate seams should increase understanding of previously mapped resources, and facilitate mapping of additional resources in the future.

• Research Organization: Illinois State Geological Survey, Champaign
• OSTI ID: 6575158
• Report Number(s): CONF-8310301-
• Conference Information: Journal Name: Am. Assoc. Pet. Geol., Bull.; (United States) Journal Volume: 67:9
• Country of Publication: United States
• Language: English

Related Subjects

01 COAL, LIGNITE, AND PEAT
011000* -- Coal
Lignite
& Peat-- Reserves
Geology
& Exploration
COAL DEPOSITS
COAL SEAMS
CORRELATIONS
GEOLOGIC DEPOSITS
GEOLOGICAL SURVEYS
GEOLOGY
ILLINOIS BASIN
MINERAL RESOURCES
RESOURCES
STRATIGRAPHY
SURVEYS