Hillery Till Member
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.
John C. Frye and H. B. Willman
Hillery Till Member, Banner Formation (Johnson et al., 1971, p. 195).
Named for Hillery, Vermilion County.
Its type locality is in the Power Plant Section (NW SW SW 21, 20N-12W).
In the Harmattan Strip Mine Section it overlies the Harmattan Till Member and is overlain by the Tilton Till Member.
Extent and thickness
The member is 14 feet thick in the Harmattan Strip Mine Section. It is best known in the Danville area, where it generally rests directly on the bedrock.
The Hillery Till Member is reddish brown, calcareous, massive, hard till. The lower part is slightly darker, and the upper commonly contains streaks of silt.
Well log characteristics
Age and correlation
Environments of deposition
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.
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