Historical:Hillery Till Member

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Handbook of Illinois Stratigraphy
Series Bulletin 95
Author H. B. Willman, Elwood Atherton, T. C. Buschbach, Charles Collinson, John C. Frye, M. E. Hopkins, Jerry A. Lineback, Jack A. Simon
Date 1975
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Lithostratigraphy: Banner Formation >>Hillery Till Member
Chronostratigraphy: Cenozoic Erathem >>Quaternary System >>Pleistocene Series


John C. Frye and H. B. Willman

Name Origin

The Hillery Till Member of the Banner Formation (Johnson et al., 1971, p. 195) is named for Hillery, Vermilion County.

Type Section

Its type locality is in the Power Plant Section (NW SW SW 21, 20N-12W).

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.

Stratigraphic Position

In the Harmattan Strip Mine Section it overlies the Harmattan Till Member and is overlain by the Tilton Till Member.


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.


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

Stratigraphic Code Geo Unit Designation