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.
M. E. Hopkins and J. A. Simon
The Wayside Sandstone Member of the Caseyville Formation (Lamar, 1925, p. 84-85).
Named for Wayside, Johnson County.
The type section consists of outcrops near the village (N1/2 30, 11S-2E) (Wanless, 1956, p. 9).
The Wayside is the lowermost unit of the Pennsylvanian System on the western side of the southern Illinois outcrop belt.
Extent and thickness
Like the Lusk, the Wayside is a complex unit of interbedded lenticular sandstones as much as 50 feet thick that are separated by silty or sandy shales and siltstones, all part of a fluvial-deltaic complex. In the area south of Carbondale the thickness of the Wayside varies but averages about 70 feet.
Well log characteristics
Age and correlation
The Wayside is equivalent, at least in part, to the Lusk Shale to the east.
Environments of deposition
LAMAR, J. E., 1925, Geology and mineral resources of the Carbondale Quadrangle: Illinois State Geological Survey Bulletin 48, 172 p.
WANLESS, H. R., 1956, Classification of the Pennsylvanian rocks of Illinois as of 1956: Illinois State Geological Survey Circular 217, 14 p.
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