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NARROW
GeoRef Subject
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all geography including DSDP/ODP Sites and Legs
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United States
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Illinois
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Gallatin County Illinois (3)
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Hardin County Illinois (10)
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Jefferson County Illinois (1)
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Knox County Illinois (1)
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Pope County Illinois (1)
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Saline County Illinois (11)
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Williamson County Illinois (1)
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Illinois Basin (4)
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Indiana (3)
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Kentucky
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Crittenden County Kentucky (3)
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Rough Creek fault zone (3)
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Webster County Kentucky (1)
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Midcontinent (1)
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Mississippi Valley
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Upper Mississippi Valley (1)
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New Madrid region (2)
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Reelfoot Rift (2)
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Wabash Valley (1)
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commodities
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brines (1)
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coal deposits (1)
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fluorspar deposits (1)
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metal ores
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zinc ores (1)
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mineral deposits, genesis (5)
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oil and gas fields (1)
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fossils
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Invertebrata
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microfossils (1)
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Plantae
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geologic age
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Paleozoic
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minerals
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halides
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fluorides
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fluorite (4)
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silicates
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framework silicates
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feldspar group (1)
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sheet silicates
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clay minerals
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illite (1)
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mica group (1)
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sulfates
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barite (1)
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Primary terms
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brines (1)
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clay mineralogy (2)
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coal deposits (1)
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crust (3)
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data processing (1)
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deformation (2)
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diagenesis (1)
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earthquakes (3)
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economic geology (9)
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faults (4)
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fluorspar deposits (1)
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fractures (3)
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geochemistry (4)
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geophysical methods (6)
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ground water (2)
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inclusions
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fluid inclusions (6)
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intrusions (2)
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Invertebrata
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Arthropoda
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Mandibulata
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Crustacea
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Ostracoda (1)
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land subsidence (4)
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metal ores
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zinc ores (1)
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metasomatism (3)
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mineral deposits, genesis (5)
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mining geology (2)
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oil and gas fields (1)
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paleobotany (1)
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paleoecology (1)
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paleogeography (1)
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paleontology (1)
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Paleozoic
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Carboniferous
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Pennsylvanian
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Herrin Coal Member (2)
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Lower Pennsylvanian (1)
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Middle Pennsylvanian
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Carbondale Formation (1)
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Moscovian (1)
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Upper Carboniferous (1)
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paragenesis (4)
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petroleum (3)
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Plantae
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Spermatophyta
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Gymnospermae
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Coniferales (1)
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Cycadales (1)
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Precambrian (1)
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reclamation (1)
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rock mechanics (2)
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sedimentary rocks
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carbonate rocks
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limestone (1)
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clastic rocks
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shale (3)
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coal (2)
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sedimentary structures
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planar bedding structures
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cyclothems (1)
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sediments
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clastic sediments
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drift (1)
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loess (1)
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structural geology (3)
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tectonics
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neotectonics (2)
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underground installations (1)
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United States
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Illinois
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Gallatin County Illinois (3)
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Hardin County Illinois (10)
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Jefferson County Illinois (1)
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Knox County Illinois (1)
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Pope County Illinois (1)
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Saline County Illinois (11)
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Williamson County Illinois (1)
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Illinois Basin (4)
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Indiana (3)
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Kentucky
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Crittenden County Kentucky (3)
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Rough Creek fault zone (3)
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Webster County Kentucky (1)
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Midcontinent (1)
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Mississippi Valley
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Upper Mississippi Valley (1)
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New Madrid region (2)
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Reelfoot Rift (2)
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Wabash Valley (1)
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well-logging (1)
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rock formations
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Baker Coal (1)
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sedimentary rocks
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sedimentary rocks
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carbonate rocks
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limestone (1)
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clastic rocks
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shale (3)
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coal (2)
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sedimentary structures
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sedimentary structures
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planar bedding structures
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cyclothems (1)
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sediments
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sediments
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clastic sediments
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drift (1)
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loess (1)
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Comparison of Seismicity Rates in the New Madrid and Wabash Valley Seismic Zones
The effect of fluid inclusion size on determination of homogenization temperature and density of liquid-rich aqueous inclusions
Incised channel fills containing conifers indicate that seasonally dry vegetation dominated Pennsylvanian tropical lowlands
Abstract Minerals have been extracted from the Illinois-Kentucky Fluorite District for over 170 years. Theories concerning the inter-relationship between the fluorite mineralization, tectonism, and igneous activity will be discussed by several geologists during this field trip. The Columbia mine (vein deposit) will be visited in Kentucky, and the only mine currently producing fluorite in this district, the Hastie Limestone Quarry (strata-bound deposit), will be visited in Illinois. The mining history of this region will be explained at the American Fluorite Museum, where numerous mineral specimens can be examined. The Hicks Dome, a Permian crypto-volcanic feature (?) in Illinois, will also be discussed. The trip will conclude with a walking tour at the Garden of the Gods Recreational Area to view the Eagle Valley Syncline and Lower Pennsylvanian units.