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Middle Valmeyeran (Salem, Warsaw, Borden, Springville; includes thin Mvl and Mk in south and east) Series

Middle Valmeyeran (Salem, Warsaw, Borden, Springville; includes thin Mvl and Mk in south and east) Series
State Illinois
Name Middle Valmeyeran (Salem, Warsaw, Borden, Springville; includes thin Mvl and Mk in south and east) Series
Geologic age Mississippian
Comments The Middle Valmeyeran Series includes these formations in various parts of the state: Salem Limestone, Sonora Sandstone, Warsaw Limestone, Ullin Limestone, Fort Payne Formation, Borden Siltstone-Springville Shale. Taken as a group, based on the stratigraphic column on the 1967 paper map this part of the series consists of about 60% limestone and 40% siltstone-shale. The limestone is cherty in places.
Primary rock type limestone
Secondary rock type siltstone
Other rock types shale
Lithologic constituents
Major
Sedimentary > Carbonate > LimestoneThe middle Valmeyeran Series includes these formations in various parts of the state: Salem Limestone, Sonora Sandstone, Warsaw Limestone, Ullin Limestone, Fort Payne Formation, Borden Siltstone-Springville Shale. Taken as a group, based on the stratigraphic column on the 1967 paper map, this part of the series consists of about 60% limestone and 40% siltstone-shale. The limestone is cherty in places.
Sedimentary > Clastic > Mixed-clastic > Siltstone-mudstoneThe middle Valmeyeran Series includes these formations in various parts of the state: Salem Limestone, Sonora Sandstone, Warsaw Limestone, Ullin Limestone, Fort Payne Formation, Borden Siltstone-Springville Shale. Taken as a group, based on the stratigraphic column on the 1967 paper map, this part of the series consists of about 60% limestone and 40% siltstone-shale. The limestone is cherty in places.
Map references
Willman, H.B., and others, (compilers), 1967, Geologic Map of Illinois: Illinois State Geological Survey, scale= 1:500,000, paper.
Unit references
Willman, H.B., and others, (compilers), 1967, Geologic Map of Illinois: Illinois State Geological Survey, scale= 1:500,000, paper.
Counties Alexander - Calhoun - Champaign - Douglas - Ford - Fulton - Greene - Hancock - Hardin - Henderson - Iroquois - Jersey - Madison - Mason - Monroe - Morgan - Pike - Pulaski - Randolph - Saint Clair - Saline - Scott - Union