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NARROW
Format
Article Type
Journal
Publisher
Section
GeoRef Subject
-
all geography including DSDP/ODP Sites and Legs
-
Africa
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North Africa
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Algeria (1)
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Morocco (2)
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Southern Africa
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South Africa (1)
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-
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Arctic region (1)
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Asia
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Far East
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China (3)
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Japan (1)
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Indian Peninsula
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India (2)
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Middle East
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Turkey (1)
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-
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Atlantic Ocean
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North Atlantic
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Baltimore Canyon (6)
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Baltimore Canyon Trough (1)
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Bermuda Rise (1)
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Blake Plateau (4)
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Blake-Bahama Basin (1)
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Blake-Bahama Outer Ridge (3)
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Georges Bank (2)
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Gulf of Mexico
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Campeche Scarp (1)
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Florida Escarpment (1)
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North Sea (1)
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Northwest Atlantic (13)
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Wilmington Canyon (1)
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Atlantic region (5)
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Australasia
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Australia
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Western Australia (1)
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Canada
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Eastern Canada
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Maritime Provinces
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New Brunswick (1)
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Nova Scotia (2)
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Prince Edward Island (1)
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Meguma Terrane (1)
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Ontario (3)
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Quebec
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Charlevoix (2)
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Charlevoix-Est County Quebec (1)
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Monteregian Hills (1)
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Western Canada
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British Columbia
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Bowser Basin (1)
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Yukon Territory (1)
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Caribbean region
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West Indies
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Antilles
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Greater Antilles
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Puerto Rico (1)
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Europe
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Baltic region (1)
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Southern Europe
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Iberian Peninsula
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Spain (1)
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Italy (2)
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Romania (1)
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Western Europe
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France
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Ireland (2)
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Scandinavia
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Denmark (1)
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United Kingdom
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Great Britain
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England
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Scotland (1)
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Fall Line (1)
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Green Lake (1)
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Green Mountains (1)
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Gulf of Mexico Basin (1)
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Hartford Basin (5)
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Hudson Canyon (2)
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Mirror Lake (1)
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North America
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Appalachian Basin (18)
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Appalachians
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Appalachian Plateau (1)
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Blue Ridge Mountains (3)
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Blue Ridge Province (3)
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Catskill Mountains (2)
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Central Appalachians (6)
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Northern Appalachians (2)
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Piedmont (12)
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Southern Appalachians (13)
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Valley and Ridge Province (5)
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Basin and Range Province (1)
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Canadian Shield
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Grenville Province (2)
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Eastern Overthrust Belt (2)
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Great Lakes region (3)
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Great Plains (1)
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Grenville Front (3)
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Gulf Coastal Plain (18)
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Michigan Basin (4)
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Niagara River (1)
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North American Craton (1)
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Rocky Mountains
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Northern Rocky Mountains (1)
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U. S. Rocky Mountains (1)
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Western Interior (1)
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Williston Basin (1)
-
-
Outer Banks (1)
-
Pacific Ocean
-
North Pacific
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Northwest Pacific
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Okhotsk Sea (1)
-
-
-
South Pacific
-
Southwest Pacific
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Lord Howe Rise (1)
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-
-
West Pacific
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Northwest Pacific
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Okhotsk Sea (1)
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Southwest Pacific
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Lord Howe Rise (1)
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Raton Basin (2)
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Richmond Basin (2)
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San Andreas Fault (1)
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South America
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Argentina (1)
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United States
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Alabama
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Barbour County Alabama (1)
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Dallas County Alabama (1)
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Etowah County Alabama (1)
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Geneva County Alabama (1)
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Montgomery County Alabama (1)
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Pike County Alabama (1)
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Russell County Alabama (1)
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Anadarko Basin (1)
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Ardmore Basin (1)
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Arizona
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Mohave County Arizona (1)
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Arkansas (7)
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Arkoma Basin (1)
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Atlantic Coastal Plain
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Central Atlantic Coastal Plain (1)
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Southern Atlantic Coastal Plain (11)
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Black Warrior Basin (5)
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Blue Ridge Mountains (3)
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California
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Northern California (1)
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Southern California (1)
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Carolina Terrane (1)
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Catskill Delta (2)
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Chesapeake Bay (4)
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Cincinnati Arch (3)
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Colorado (5)
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Connecticut (6)
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Culpeper Basin (5)
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Dan River basin (1)
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Delaware
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Kent County Delaware (1)
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Delaware River (1)
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Delaware River basin (1)
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District of Columbia (1)
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Dunkard Basin (1)
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Eastern U.S.
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Northeastern U.S. (25)
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Southeastern U.S. (79)
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Florida
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Brevard County Florida
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Cape Canaveral (1)
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Florida Keys
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Key Largo (1)
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-
Franklin County Florida
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Apalachicola Bay (1)
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Monroe County Florida
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Key Largo (1)
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Georgia
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Catoosa County Georgia (1)
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Columbia County Georgia (1)
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Fulton County Georgia
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Atlanta Georgia (1)
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Lincoln County Georgia (1)
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Richmond County Georgia (1)
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Stewart County Georgia (1)
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Wilkinson County Georgia (1)
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Hudson River (2)
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Hudson Valley (1)
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Idaho (1)
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Illinois (6)
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Illinois Basin (8)
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Indiana
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Jackson County Indiana (1)
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Kansas
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Sedgwick Basin (1)
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Shawnee County Kansas
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Topeka Kansas (1)
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Kentucky
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Anderson County Kentucky (1)
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Bath County Kentucky (1)
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Elliott County Kentucky (1)
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Madison County Kentucky (1)
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Louisiana (2)
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Maine
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Norumbega fault zone (1)
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Piscataquis County Maine
-
Mount Katahdin (1)
-
-
-
Maryland
-
Patuxent River (1)
-
-
Massachusetts
-
Barnstable County Massachusetts
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Cape Cod (2)
-
-
Middlesex County Massachusetts (1)
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Suffolk County Massachusetts
-
Boston Massachusetts (2)
-
-
-
Michigan (3)
-
Midcontinent (11)
-
Midwest (59)
-
Mississippi
-
Warren County Mississippi (1)
-
-
Mississippi Delta (1)
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Mississippi Embayment (8)
-
Mississippi Valley
-
Upper Mississippi Valley (1)
-
-
Missouri
-
Maries County Missouri (1)
-
Saint Francois County Missouri (1)
-
-
Nashville Dome (2)
-
Nevada (1)
-
New England (19)
-
New Hampshire
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Carroll County New Hampshire (1)
-
Hillsborough County New Hampshire
-
Manchester New Hampshire (1)
-
-
-
New Jersey
-
Monmouth County New Jersey (1)
-
-
New Madrid region (17)
-
New Mexico (1)
-
New York
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Adirondack Mountains (3)
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Catskill Mountains (2)
-
Dutchess County New York (1)
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Erie County New York (1)
-
Monroe County New York (1)
-
New York City New York (1)
-
Niagara County New York (1)
-
Onondaga County New York (2)
-
Tompkins County New York
-
Ithaca New York (1)
-
-
-
Newark Basin (13)
-
North Carolina
-
Bladen County North Carolina (1)
-
Cabarrus County North Carolina (1)
-
Cape Fear Arch (1)
-
Craven County North Carolina (1)
-
Cumberland County North Carolina (1)
-
Dare County North Carolina
-
Cape Hatteras (2)
-
-
Halifax County North Carolina (1)
-
Harnett County North Carolina (1)
-
Onslow Bay (1)
-
Robeson County North Carolina (1)
-
Wayne County North Carolina (1)
-
-
Ohio (12)
-
Ohio River valley (1)
-
Oklahoma
-
Meers Fault (2)
-
-
Oregon (2)
-
Ouachita Belt (1)
-
Ouachita Mountains (3)
-
Pennsylvania
-
Blair County Pennsylvania (1)
-
Fayette County Pennsylvania (1)
-
Pike County Pennsylvania (1)
-
-
Potomac River (1)
-
Potomac River basin (1)
-
Reelfoot Rift (3)
-
Rhode Island (4)
-
South Carolina
-
Charleston County South Carolina
-
Ashley River Fault (1)
-
Charleston South Carolina (4)
-
-
Darlington County South Carolina (1)
-
Florence County South Carolina (1)
-
Lake Jocassee (2)
-
Lexington County South Carolina (1)
-
Oconee County South Carolina (1)
-
Pickens County South Carolina (1)
-
Sumter County South Carolina (1)
-
-
Southern U.S. (8)
-
Susquehanna River (1)
-
Suwannee River (1)
-
Tennessee
-
Blount County Tennessee (3)
-
Hancock County Tennessee (1)
-
Jefferson County Tennessee (1)
-
Sevier County Tennessee (1)
-
White County Tennessee (1)
-
-
Tennessee Valley (1)
-
Texas
-
Val Verde Basin (1)
-
-
U. S. Rocky Mountains (1)
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Uinta Basin (1)
-
Utah
-
Washington County Utah (1)
-
-
Vermont (7)
-
Virginia
-
Culpeper County Virginia (2)
-
Fairfax County Virginia (2)
-
Fauquier County Virginia (2)
-
Giles County Virginia (4)
-
Loudoun County Virginia (2)
-
Louisa County Virginia (3)
-
Orange County Virginia (2)
-
Pamunkey River (1)
-
Prince William County Virginia (2)
-
Richmond Virginia (1)
-
-
Wabash Valley (1)
-
Washington (2)
-
West Virginia
-
Pocahontas County West Virginia (1)
-
-
Western U.S. (16)
-
Wyoming (2)
-
-
White Mountains (2)
-
-
commodities
-
bitumens (1)
-
brines (1)
-
coal deposits (1)
-
construction materials (1)
-
diamond deposits (1)
-
energy sources (15)
-
geothermal energy (2)
-
kaolin deposits (1)
-
metal ores
-
gold ores (3)
-
lead-zinc deposits (1)
-
rare earth deposits (1)
-
uranium ores (2)
-
-
mineral deposits, genesis (5)
-
mineral exploration (3)
-
monazite deposits (1)
-
oil and gas fields (9)
-
petroleum
-
natural gas (22)
-
-
phosphate deposits (1)
-
placers (3)
-
water resources (1)
-
-
elements, isotopes
-
carbon
-
C-13 (1)
-
C-13/C-12 (7)
-
C-14 (7)
-
organic carbon (3)
-
-
chemical ratios (1)
-
hydrogen
-
D/H (1)
-
-
isotope ratios (16)
-
isotopes
-
radioactive isotopes
-
Be-10 (2)
-
Be-10/Be-9 (1)
-
C-14 (7)
-
Cs-137 (1)
-
Pb-206/Pb-204 (1)
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Pb-207/Pb-204 (1)
-
Pb-210 (1)
-
-
stable isotopes
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Be-10/Be-9 (1)
-
C-13 (1)
-
C-13/C-12 (7)
-
D/H (1)
-
Hf-177/Hf-176 (1)
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N-15/N-14 (1)
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O-18/O-16 (7)
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Pb-206/Pb-204 (1)
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Pb-207/Pb-204 (1)
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S-34/S-32 (2)
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Sr-87/Sr-86 (2)
-
-
-
metals
-
actinides
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thorium (1)
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alkali metals
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cesium
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Cs-137 (1)
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lithium (1)
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potassium (1)
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rubidium (1)
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-
alkaline earth metals
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beryllium
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Be-10 (2)
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Be-10/Be-9 (1)
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-
calcium
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Mg/Ca (1)
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magnesium
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Mg/Ca (1)
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strontium
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Sr-87/Sr-86 (2)
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-
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aluminum (1)
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antimony (1)
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arsenic (1)
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bismuth (1)
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cadmium (1)
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chromium (1)
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cobalt (1)
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hafnium
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Hf-177/Hf-176 (1)
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iron (2)
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lead
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Pb-206/Pb-204 (1)
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Pb-207/Pb-204 (1)
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Pb-210 (1)
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manganese (1)
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mercury (2)
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molybdenum (1)
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nickel (1)
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rare earths
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scandium (1)
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silver (1)
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tin (1)
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vanadium (1)
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zirconium (1)
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nitrogen
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N-15/N-14 (1)
-
-
noble gases
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helium (1)
-
-
oxygen
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O-18/O-16 (7)
-
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phosphorus (4)
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selenium (2)
-
sulfur
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S-34/S-32 (2)
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-
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fossils
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borings (1)
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burrows (1)
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Chordata
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Vertebrata
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Pisces
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Chondrichthyes
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Holocephali (1)
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-
Osteichthyes
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Actinopterygii (1)
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Sarcopterygii
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Crossopterygii
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Actinistia (1)
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-
-
-
-
Tetrapoda
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Mammalia
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Theria
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Eutheria
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Proboscidea
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Mastodontoidea (1)
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-
-
-
-
Reptilia (1)
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-
-
-
Cyclostomata (1)
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ichnofossils (1)
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Invertebrata
-
Arthropoda
-
Mandibulata
-
Crustacea
-
Branchiopoda (1)
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Ostracoda (2)
-
-
-
-
Brachiopoda
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Articulata
-
Pentamerida (1)
-
-
-
Bryozoa
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Cheilostomata (1)
-
-
Cnidaria
-
Anthozoa
-
Zoantharia
-
Tabulata (1)
-
-
-
-
Echinodermata
-
Crinozoa
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Crinoidea (1)
-
-
Echinozoa
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Echinoidea (1)
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-
-
Mollusca
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Bivalvia
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Heterodonta
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Rudistae (1)
-
-
Ostreoidea
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Ostreidae
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Crassostrea (1)
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-
-
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Gastropoda
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Turritellidae
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Turritella (1)
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-
-
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Porifera
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Stromatoporoidea (1)
-
-
Protista
-
Foraminifera
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Rotaliina
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Buliminacea
-
Uvigerinidae
-
Uvigerina
-
Uvigerina peregrina (1)
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-
-
-
Globigerinacea
-
Neogloboquadrina
-
Neogloboquadrina pachyderma (1)
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-
-
Rotaliacea
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Ammonia
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Ammonia beccarii (1)
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-
-
-
-
-
-
microfossils
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Conodonta (5)
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-
palynomorphs
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acritarchs (1)
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miospores
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pollen (6)
-
-
-
Plantae
-
algae
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nannofossils (1)
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-
Spermatophyta
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Angiospermae (1)
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-
-
problematic fossils (1)
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thallophytes (1)
-
tracks (1)
-
-
geochronology methods
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(U-Th)/He (1)
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Ar/Ar (3)
-
fission-track dating (2)
-
paleomagnetism (7)
-
Pb/Pb (1)
-
radiation damage (1)
-
Rb/Sr (1)
-
Sm/Nd (1)
-
Sr/Sr (1)
-
thermochronology (1)
-
U/Pb (8)
-
-
geologic age
-
Cenozoic
-
Quaternary
-
Holocene
-
Medieval Warm Period (1)
-
Neoglacial (1)
-
upper Holocene (3)
-
-
Pleistocene
-
upper Pleistocene
-
Weichselian
-
upper Weichselian
-
Allerod (2)
-
Bolling (2)
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Younger Dryas (1)
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-
-
-
-
upper Quaternary (5)
-
-
Tertiary
-
lower Tertiary (1)
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Maikop Series (1)
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middle Tertiary (1)
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Neogene
-
Miocene
-
Pungo River Formation (1)
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upper Miocene
-
Duplin Formation (2)
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-
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Pliocene
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Citronelle Formation (1)
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middle Pliocene (1)
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Yorktown Formation (2)
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-
-
Paleogene
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Eocene
-
lower Eocene
-
Aquia Formation (1)
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-
middle Eocene
-
Claiborne Group (1)
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-
upper Eocene
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Jackson Group (1)
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-
-
Ocala Group (1)
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Oligocene
-
middle Oligocene
-
Byram Formation (1)
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-
Suwannee Limestone (1)
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upper Oligocene (1)
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-
Paleocene
-
lower Paleocene
-
K-T boundary (1)
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-
Naheola Formation (1)
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-
Wilcox Group (2)
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Williamsburg Formation (1)
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-
-
upper Cenozoic
-
Tamiami Formation (1)
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-
-
Laurentide ice sheet (3)
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Mesozoic
-
Cretaceous
-
Lower Cretaceous
-
Albian (2)
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Aptian (2)
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-
Upper Cretaceous
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Campanian (1)
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K-T boundary (1)
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Santonian (1)
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Senonian (1)
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-
-
Jurassic
-
Lower Jurassic
-
Feltville Formation (1)
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Portland Formation (1)
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Triassic-Jurassic boundary (1)
-
-
Norphlet Formation (1)
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Upper Jurassic
-
Haynesville Formation (1)
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-
-
lower Mesozoic (3)
-
Moenave Formation (1)
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Newark Supergroup (9)
-
Passaic Formation (2)
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Triassic
-
Upper Triassic
-
Chinle Formation (2)
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Lockatong Formation (2)
-
Mercia Mudstone (1)
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Norian (1)
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Triassic-Jurassic boundary (1)
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-
-
-
Paleozoic
-
Berea Sandstone (1)
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Cambrian
-
Lower Cambrian
-
Antietam Formation (1)
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Chilhowee Group (1)
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Pinney Hollow Formation (1)
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-
Upper Cambrian
-
Bonneterre Formation (1)
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Lamotte Sandstone (1)
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Maynardville Limestone (1)
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-
-
Carboniferous
-
Mississippian
-
Upper Mississippian
-
Hartselle Sandstone (1)
-
Parkwood Formation (1)
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-
-
Pennsylvanian
-
Lower Pennsylvanian (1)
-
Morrow Formation (1)
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Westerly Granite (1)
-
-
-
Chattanooga Shale (2)
-
Devonian
-
Lower Devonian
-
Emsian (1)
-
Lochkovian (1)
-
Oriskany Sandstone (2)
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Pragian (1)
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-
Middle Devonian
-
Eifelian (2)
-
Givetian (1)
-
Marcellus Shale (4)
-
Onondaga Limestone (4)
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Tioga Bentonite (1)
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-
Millboro Shale (1)
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Upper Devonian
-
Famennian (3)
-
Frasnian (3)
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Huron Member (1)
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Kellwasser event (1)
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-
-
Helderberg Group (1)
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lower Paleozoic (3)
-
middle Paleozoic (1)
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New Albany Shale (2)
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Ordovician
-
Lower Ordovician
-
Beekmantown Group (1)
-
-
Martinsburg Formation (2)
-
Middle Ordovician
-
Deicke Bentonite Bed (1)
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Millbrig Bentonite Bed (1)
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Whiterockian (1)
-
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Upper Ordovician
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Katian (1)
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Sandbian (1)
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Utica Shale (1)
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Permian
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Phosphoria Formation (1)
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Petersburg Granite (1)
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Silurian
-
Lockport Formation (2)
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Lower Silurian
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Llandovery (1)
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Tuscarora Formation (1)
-
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Middle Silurian
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Clinton Group (2)
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Niagaran (2)
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Salina Group (1)
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-
-
upper Paleozoic (3)
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Phanerozoic (1)
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igneous rocks
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kimberlite (2)
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volcanic ash (2)
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orthosilicates
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zircon group
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sheet silicates
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Primary terms
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catalogs (5)
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upper Quaternary (5)
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Tertiary
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Pliocene
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Citronelle Formation (1)
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middle Pliocene (1)
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Paleogene
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Ocala Group (1)
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Byram Formation (1)
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Suwannee Limestone (1)
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upper Oligocene (1)
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Paleocene
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lower Paleocene
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K-T boundary (1)
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Naheola Formation (1)
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Wilcox Group (2)
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upper Cenozoic
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Tamiami Formation (1)
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Chordata
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Tetrapoda
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Mammalia
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Reptilia (1)
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clay mineralogy (5)
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Deep Sea Drilling Project
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IPOD
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Leg 90
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deformation (11)
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igneous rocks
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kimberlite (2)
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diorites
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tonalite (1)
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granites (3)
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lamproite (1)
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volcanic rocks
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pyroclastics (2)
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rhyolites (1)
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intrusions (7)
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Invertebrata
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Arthropoda
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-
-
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Brachiopoda
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Articulata
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Pentamerida (1)
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-
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Bryozoa
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Cheilostomata (1)
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Cnidaria
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Anthozoa
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Tabulata (1)
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-
-
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Echinodermata
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Crinozoa
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Crinoidea (1)
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Echinozoa
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Echinoidea (1)
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-
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Mollusca
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Bivalvia
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Heterodonta
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Rudistae (1)
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Ostreoidea
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Ostreidae
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Crassostrea (1)
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-
-
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Gastropoda
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Turritellidae
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Turritella (1)
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-
-
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Porifera
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Stromatoporoidea (1)
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Protista
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Foraminifera
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Rotaliina
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Buliminacea
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Uvigerinidae
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Uvigerina
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Uvigerina peregrina (1)
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-
-
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Globigerinacea
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Neogloboquadrina
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Neogloboquadrina pachyderma (1)
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-
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Rotaliacea
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Ammonia
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Ammonia beccarii (1)
-
-
-
-
-
-
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isostasy (5)
-
isotopes
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radioactive isotopes
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Be-10 (2)
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C-14 (7)
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Cs-137 (1)
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stable isotopes
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Be-10/Be-9 (1)
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C-13 (1)
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C-13/C-12 (7)
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D/H (1)
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Hf-177/Hf-176 (1)
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N-15/N-14 (1)
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O-18/O-16 (7)
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Pb-206/Pb-204 (1)
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Pb-207/Pb-204 (1)
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S-34/S-32 (2)
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Sr-87/Sr-86 (2)
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kaolin deposits (1)
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land subsidence (2)
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land use (3)
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lava (5)
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magmas (6)
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maps (2)
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Mesozoic
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Cretaceous
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Lower Cretaceous
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Albian (2)
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Aptian (2)
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-
Upper Cretaceous
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Campanian (1)
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K-T boundary (1)
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Santonian (1)
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Senonian (1)
-
-
-
Jurassic
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Lower Jurassic
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Feltville Formation (1)
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Portland Formation (1)
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Triassic-Jurassic boundary (1)
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Norphlet Formation (1)
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Upper Jurassic
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Haynesville Formation (1)
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-
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lower Mesozoic (3)
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Moenave Formation (1)
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Newark Supergroup (9)
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Passaic Formation (2)
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Triassic
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Upper Triassic
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Chinle Formation (2)
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Lockatong Formation (2)
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Mercia Mudstone (1)
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Norian (1)
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Triassic-Jurassic boundary (1)
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metal ores
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alkaline earth metals
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beryllium
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Be-10 (2)
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Be-10/Be-9 (1)
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calcium
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Mg/Ca (1)
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magnesium
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Mg/Ca (1)
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strontium
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Sr-87/Sr-86 (2)
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aluminum (1)
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Hf-177/Hf-176 (1)
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iron (2)
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Pb-206/Pb-204 (1)
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manganese (1)
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metamorphic rocks
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noble gases
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North America
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Appalachian Basin (18)
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Appalachians
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Valley and Ridge Province (5)
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Basin and Range Province (1)
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Canadian Shield
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Eastern Overthrust Belt (2)
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Western Interior (1)
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Williston Basin (1)
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nuclear facilities (3)
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Ocean Drilling Program
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Leg 164
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ODP Site 994 (1)
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ODP Site 995 (1)
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ODP Site 997 (1)
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ocean floors (5)
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oceanography (18)
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orogeny (17)
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oxygen
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O-18/O-16 (7)
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Pacific Ocean
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North Pacific
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Northwest Pacific
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Okhotsk Sea (1)
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South Pacific
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Southwest Pacific
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Lord Howe Rise (1)
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West Pacific
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Northwest Pacific
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Okhotsk Sea (1)
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Southwest Pacific
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Lord Howe Rise (1)
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paleobotany (2)
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paleoclimatology (20)
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paleoecology (16)
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paleogeography (26)
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Paleozoic
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Berea Sandstone (1)
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Cambrian
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Lower Cambrian
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Antietam Formation (1)
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Chilhowee Group (1)
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Pinney Hollow Formation (1)
-
-
Upper Cambrian
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Bonneterre Formation (1)
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Lamotte Sandstone (1)
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Maynardville Limestone (1)
-
-
-
Carboniferous
-
Mississippian
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Upper Mississippian
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Hartselle Sandstone (1)
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Parkwood Formation (1)
-
-
-
Pennsylvanian
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Lower Pennsylvanian (1)
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Morrow Formation (1)
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Westerly Granite (1)
-
-
-
Chattanooga Shale (2)
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Devonian
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Lower Devonian
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Emsian (1)
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Lochkovian (1)
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Oriskany Sandstone (2)
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Pragian (1)
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-
Middle Devonian
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Eifelian (2)
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Givetian (1)
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Marcellus Shale (4)
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Onondaga Limestone (4)
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Tioga Bentonite (1)
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-
Millboro Shale (1)
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Upper Devonian
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Famennian (3)
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Frasnian (3)
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Huron Member (1)
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Kellwasser event (1)
-
-
-
Helderberg Group (1)
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lower Paleozoic (3)
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middle Paleozoic (1)
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New Albany Shale (2)
-
Ordovician
-
Lower Ordovician
-
Beekmantown Group (1)
-
-
Martinsburg Formation (2)
-
Middle Ordovician
-
Deicke Bentonite Bed (1)
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Millbrig Bentonite Bed (1)
-
Whiterockian (1)
-
-
Upper Ordovician
-
Caradocian (1)
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Cincinnatian (1)
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Katian (1)
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Mohawkian (3)
-
Sandbian (1)
-
-
Utica Shale (1)
-
-
Permian
-
Lower Permian
-
Cisuralian (1)
-
-
Phosphoria Formation (1)
-
-
Petersburg Granite (1)
-
Silurian
-
Lockport Formation (2)
-
Lower Silurian
-
Llandovery (1)
-
Tuscarora Formation (1)
-
-
Middle Silurian
-
Clinton Group (2)
-
-
Niagaran (2)
-
Upper Silurian
-
Salina Group (1)
-
-
-
upper Paleozoic (3)
-
-
palynomorphs
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acritarchs (1)
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miospores
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pollen (6)
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-
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paragenesis (1)
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petroleum
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natural gas (22)
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petrology (3)
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Phanerozoic (1)
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phosphate deposits (1)
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placers (3)
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Plantae
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algae
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nannofossils (1)
-
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Spermatophyta
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Angiospermae (1)
-
-
-
plate tectonics (31)
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pollution (6)
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Precambrian
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Archean (2)
-
upper Precambrian
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Proterozoic
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Mesoproterozoic (1)
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Neoproterozoic (8)
-
-
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problematic fossils (1)
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roads (1)
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sea-level changes (13)
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chemically precipitated rocks
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clastic rocks
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black shale (10)
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sedimentary structures
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sedimentation (29)
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seismology (50)
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