Babylon 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.
M. E. Hopkins and J. A. Simon
The Babylon Sandstone Member of the Abbott Formation (Wanless, 1931a, p. 189-190, 192-193).
Named for Babylon, Fulton County.
The type locality is half a mile north of Babylon in the west bank of the Spoon River (NE NE 14, 7N-1E) (Wanless, 1957, p. 65, 205).
The Babylon Sandstone Member is the lowest named member of the Abbott Formation in western Illinois. In many places it is the lowest unit of the Pennsylvanian System and unconformably overlies Mississippian limestones.
Extent and thickness
The Babylon Sandstone is widely present in western Illinois and at its maximum is about 25 feet thick. The Babylon in western Illinois becomes thinner and sporadic in occurrence to the south.
The sandstone is made up of relatively pure, subangular, medium to coarse quartz grains, most of which have been secondarily enlarged by quartz overgrowths that sparkle in sunlight (Wanless, 1957).
Well log characteristics
Age and correlation
The Babylon is correlated with the Grindstaff Sandstone of southern Illinois.
Environments of deposition
WANLESS, H. R., 1931a, Pennsylvanian cycles in western Illinois: Illinois State Geological Survey Bulletin 60, p.
WANLESS, H. R., 1957, Geology and mineral resources of the Beardstown, Glasford, Havana, and Vermont Quadrangles: Illinois State Geological Survey Bulletin 82, 233 p.
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