Circular - Division of the Illinois State Geological SurveyIllinois State Geological Survey., 1938 - Mines and mineral resources |
Other editions - View all
Common terms and phrases
32 TIOS average direction Battery Rock Sandstone Caseyville Formation Caseyville sediments Chesterian Series clastic Clore Formation Goreville Clore Top Cross-bedding and Valley DEGONIA FORMATION Degonia Sandstone dendritic differential compaction early Pennsylvanian erosional valleys Evansville Valley feet Gallatin County Genevieve Limestone geology and cross-bedding Glen Dean Goreville Cave Hill Goreville Member Hardin County Hill Negli Creek Illinois Basin Indiana Kentucky Kinkaid Formation lateral continuity limestone and shale LIMESTONE MEMBER Limestone of Clore Mile number of measurements Ordovician outcrop mapping peneplain Pennsylvanian sand body Pennsylvanian Sandstones Mississippian Pennsylvanian sediments Pennsylvanian System Posey Co Posey County Potter pre-Pennsylvanian erosion Rock and Pounds sandstone and shale Sandstone fig shown in figure siltstone Simplified pre-Pennsylvanian geology small shale-filled valley southeastern Illinois southern edge southwest southwestward stratigraphic study area sub-Pennsylvanian valley subsidence subsurface and outcrop thick-bedded sandstone thin-bedded three-mile intervals TIIS Top of Limestone transport direction valley contains appreciable valley fill valley system vector mean Waltersburg Wanless