Harmattan Till Member
Lithostratigraphy: Banner Formation >>Harmattan Till Member
Chronostratigraphy: Cenozoic Erathem >>Quaternary System >>Pleistocene Series
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)
John C. Frye and H. B. Willman
Name
Original description
Harmattan Till Member, Banner Formation (Johnson et al., 1971, p. 194).
Derivation
Named for the Harmattan Strip Mine near Danville, Vermilion County (NE 4, 19N-12W).
Other names
History/background
Type section
Type location
The type section is in the Harmattan Strip Mine near Danville, Vermilion County (NE 4, 19N-12W).
Type author(s)
Type status
Reference section
Reference location
Reference author(s)
Reference status
Stratigraphic relationships
It is bounded at the base by the Belgium Member, or bedrock, and at the top by the Hillery Till Member.
Extent and thickness
In the type area it is 8 feet thick, and it is known definitely only in the Danville area.
Lithology
The member is largely gray, calcareous, dense, hard till, but the upper part contains lenticular bodies of gravelly sand.
Core(s)
Photograph(s)
Contacts
Well log characteristics
Fossils
Age and correlation
Environments of deposition
Economic importance
Remarks
References
JOHNSON, W. H., D. L. GROSS, and S. R. MORAN, 1971, Till stratigraphy of the Danville region, east-central Illinois, in Till, A Symposium: Ohio State University Press, Columbus, p. 184-216; Illinois State Geological Survey Reprint 1972-I.
ISGS Codes
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