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Earth Characteristics
bedrock
,
geologic structure
,
gravity
,
igneous rocks
,
magnetic field
,
magnetic susceptibility
,
rocks and deposits
,
sedimentary rocks
,
sediments and soils
,
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Earth Sciences
economic geology
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geochemistry
,
geophysics
,
soil chemistry
,
water chemistry
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Environmental Issues
abandoned mines and quarries
,
contamination and pollution
,
mine drainage
,
mining hazards
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Geographic Analysis and Mapping
geospatial data
,
maps and atlases
,
remote sensing
,
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Natural Resources
metallic ores
,
mineral resources
,
mines
,
mining and quarrying
,
resource assessment
,
resource extraction
,
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Techniques and Methods
aeromagnetic surveying
,
aeroradiometric surveying
,
chemical analysis
,
electromagnetic surveying
,
field methods
,
mathematical modeling
,
radiometric dating
,
remote sensing
,
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US States
Alabama
,
Alaska
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Arizona
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Arkansas
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California
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Colorado
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Connecticut
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Delaware
,
Florida
,
Georgia
,
Idaho
,
Illinois
,
Indiana
,
Iowa
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Kansas
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Kentucky
,
Louisiana
,
Maine
,
Maryland
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Massachusetts
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Michigan
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Minnesota
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Mississippi
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Missouri
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Montana
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Nebraska
,
Nevada
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New Hampshire
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New Jersey
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New Mexico
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New York
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North Carolina
,
North Dakota
,
Ohio
,
Oklahoma
,
Oregon
,
Pennsylvania
,
Rhode Island
,
South Carolina
,
South Dakota
,
Tennessee
,
Texas
,
Utah
,
Vermont
,
Virginia
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Washington
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West Virginia
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Wisconsin
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Wyoming
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