Tygett Sandstone 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.
Elwood Atherton, Charles Collinson, and Jerry A. Lineback
The Tygett Sandstone Member of the Clore Formation (Swann, 1963, p. 40, 42).
Named for Tygett School, Union County.
The type section of the Tygett (Swann, 1963, p. 40, 42) is located 1.5 miles north of Tygett School, on Bradshaw Creek (NE NW 24, 11S-1W), where it is 26 feet thick.
The Tygett Sandstone Member is the middle member of the Clore Formation.
Extent and thickness
It consists of sandstone and minor amounts of shale.
Well log characteristics
Sigillaria trunks and fragments are common in some beds.
Age and correlation
Environments of deposition
SWANN, D. H., 1963, Classification of Genevievian and Chesterian (Late Mississippian) rocks of Illinois: Illinois State Geological Survey Report of Investigations 216, 91 p.
|Stratigraphic Code||Geo Unit Designation|