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Geology Resources

 

Bedrock Geology

Bedded rock in ceilings and walls of a side passage in Illinois Caverns Caves in Illinois: Our Subterranean Landscape
 A slice through Karst in southwestern Illinois Karst Landscapes of Illinois: Dissolving Bedrock and Collapsing Soil

Earth Resources and Mining

Pennsylvanian Coal Swamp Coal Formation in Illinois
Close up of a pyrite, esfalerite and quartz mineral from trepca, bosnia and herzegovina. Source: http://www.stockfreeimages.com/ Gold: Its Occurrence in Illinois
figure 1: History of Illinois Coal Production. Source: Energy Informaiton Administration Illinois Energy Production and Consumption
Oil Fields in Illinois Oil Fields in Illinois

Glacial Geology

Quaternary sediment over standstone bedrock Classification of Quaternary Time and Deposits
Formation of an end moraine End Moraines: the End of the Glacial Ride
This photo of the Fox River Stone Company quarry near St. Charles, Illinois, shows approximately 100 feet of glacial drift over bedrock. Evidence for Glaciation
maximum extent of glacier ice in North America during the last glacial maximum about 20,000 radiocarbon years ago Glacial Geology Overview
Knik Glacier, Alaska Glacial Sedimentary Environments and Deposits
Figure showing Late Wisconsin ice sheets and glaciers, and the maximum extent of older Quaternary glaciations Quaternary Glaciations in Illinois
Quaternary History in Illinois Quaternary History in Illinois

Mineralogy, Crystallography, and Rocks

Boulder moved by glaciers from Canada to Illinois Exotic Rocks... or Erratics are Erratic
Four pieces of flourite. Fluorite: Illinois' State Mineral
A variety of geodes Geodes: Small Treasure Vaults in Illinois
Guide to Rocks and Minerals of Illinois Guide to Rocks and Minerals of Illinois
A Pyrite "sun," or "miner's dollar," in Anna Shale Pyrite Suns

Paleontology

composite image of a stag moose, a mastadon tooth and a peccary Build Illinois: The Last 500 Million Years
Guide for Beginning Fossil Hunters Guide for Beginning Fossil Hunters
Wooly Mammoth Ice Age Residents of Illinois
Illinois' State Fossil Tullimonstrum gregarium Illinois' State Fossil Tullimonstrum gregarium
Common Pennsylvanian plants: lycopods, sphenophytes, and ferns. Pennsylvanian Rocks in Illinois
Ceraurus cf. pleurexanthemus Green. Found in Ordovician age rocks of the     Grand Detour Formation, Platteville Group, near Rockford,Illinois is shown approximately life size). The Trilobite: An Early Inhabitant of Illinois

Physical and Chemical Processes

Saline Mines et al-surficial geology Formation of Hicks Dome in Southern Illinois
Pangea-250 million years ago Plate Tectonics: Mysteries Solved!

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Illinois State Geological Survey


Richard C. Berg, Director
615 E. Peabody
Champaign, IL 61820
217-333-4747
info@isgs.illinois.edu

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