Illinois State Geological Survey

Subjects

Geology, Oil fields, Petroleum, Petroleum industry and trade, Secondary recovery of oil, Oil field flooding, Illinois State Geological Survey, Mines and mineral resources, Maps, Coal, Statistics, Stratigraphic Geology, Analysis, Glacial epoch, Paleontology, Congresses, Geological surveys, Grond, Periodicals, Sanitary landfills, Building stones, Cadmium, Cartography, Catalogs, Catalogs and collections

Places

Illinois, Sangamon County, Springfield, Alexander County, Bloomington, Bureau County, Bureau County (Ill.), Cairo, Cave in Rock, Champaign, Chicago, Cincinnati Arch, Danvers, Grafton area, Hamilton, Hancock County, Hardin County, Hennepin County, Hennepin County (Ill.), Illinois Basin, Illinois Valley, Jacksonville, Jersey County, Johnson County, Jonesboro

People

Amos Henry Worthen (1813-1888)

Time

Cambrian, Devonian