Tilton 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
Tilton Till Member, Banner Formation (Johnson et al., 1971, p. 196).
Named for Tilton, Vermilion County.
The type locality is the School House Branch Section (SE NE NE 2, 19N-12W).
The Tilton Till is commonly overlain at the top by a truncated weathered zone, or an oxidized zone, and in the Harmattan Strip Mine Section it overlies the Hillery Till Member.
Extent and thickness
In Vermilion County the member is about 15 feet thick.
Where unoxidized, the Tilton Till Member is gray, calcareous, hard, silty, sandy till. The unit contains considerable silt, sand, and gravel, particularly near the upper and lower boundaries.
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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