Lowell Coal Member
Lithostratigraphy: Kewanee Group >>Carbondale Formation >>Lowell Coal Member
Chronostratigraphy: Paleozoic Erathem >>Pennsylvanian Subsystem >>Desmoinesian Series
Allostratigraphy: Absaroka Sequence
Primary source
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)
M. E. Hopkins and J. A. Simon
Name
Original description
The Lowell Coal Member of the Carbondale Formation (Willman and Payne, 1942, p. 102-105).
Derivation
Named for Lowell, La Salle County.
Other names
History/background
Type section
Type location
The type section of the Lowell Coal is an exposure on the Vermilion River (SE SW 8, 32N-2E).
Type author(s)
Type status
Reference section
Reference location
Reference author(s)
Reference status
Stratigraphic relationships
Extent and thickness
The Lowell Coal is present in northern Illinois and in the southern part of western Illinois. The coal is 10 inches thick in the type section.
Lithology
It is a bright-banded, rather shaly coal underlain by a silty to sandy underclay and overlain by several feet of gray shale that contains two limestone beds, which are equivalent to upper units of the Oak Grove Limestone. The underclay overlies a siltstone containing plant root impressions, which in turn is underlain by gray shale containing additional limestone units equivalent to the Oak Grove Limestone.
Core(s)
Photograph(s)
Contacts
Well log characteristics
Fossils
Age and correlation
It is equivalent to the Shawneetown Coal in southwestern, southern, and eastern Illinois.
Environments of deposition
Economic importance
Remarks
References
WILLMAN, H. B., and J. N. PAYNE, 1942, Geology and mineral resources of the Marseilles, Ottawa, and Streator Quadrangles: Illinois State Geological Survey Bulletin 66, 388 p.
ISGS Codes
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