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NARROW
Format
Article Type
Journal
Publisher
Section
GeoRef Subject
-
all geography including DSDP/ODP Sites and Legs
-
Africa
-
West Africa
-
Nigeria
-
Niger Delta (1)
-
-
-
-
Amelia (1)
-
Antarctica
-
Antarctic ice sheet
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East Antarctic ice sheet (1)
-
-
-
Asia
-
Central Asia
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Kazakhstan (1)
-
-
Far East
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China (1)
-
-
Indian Peninsula
-
India (3)
-
-
Popigay Structure (1)
-
-
Atlantic Ocean
-
North Atlantic
-
Baltimore Canyon Trough (1)
-
Great Meteor Seamount (1)
-
Gulf of Mexico (1)
-
Northwest Atlantic (2)
-
-
-
Atlantic region (1)
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Australasia
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Australia (1)
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New Zealand (1)
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Avalon Zone (2)
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Bay of Islands (1)
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Canada
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Arctic Archipelago (1)
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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
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Minas Basin (1)
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-
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Newfoundland and Labrador
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Newfoundland (2)
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Ontario
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Ottawa Ontario (1)
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Quebec
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Charlevoix (1)
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Gaspe-Est County Quebec
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Gaspe Quebec (1)
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Gatineau Valley (1)
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Montreal and Jesus Islands County Quebec
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Mackenzie Mountains (2)
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Western Canada
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Alberta (2)
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British Columbia (3)
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Canadian Rocky Mountains (3)
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Northwest Territories (2)
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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 (2)
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Bahamas (1)
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Central America
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Costa Rica (1)
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Guatemala (2)
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Panama (1)
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Chesapeake Bay impact structure (2)
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Commonwealth of Independent States
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Kazakhstan (1)
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Russian Federation
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Popigay Structure (1)
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Ukraine
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Podolia (1)
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Europe
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Baltic region
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Estonia (1)
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Pyrenees (1)
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Southern Europe
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Iberian Peninsula
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Spain (1)
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Italy (1)
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Yugoslavia (1)
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Ukraine
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Podolia (1)
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Western Europe
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Ireland (1)
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Scandinavia
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Norway (2)
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Sweden (1)
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United Kingdom
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Great Britain
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England (1)
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Scotland (2)
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False Cape (1)
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Fire Island (1)
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Grandfather Mountain (2)
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Hartford Basin (2)
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Hunter Valley (2)
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James River (4)
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Long Island (1)
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Mexico (2)
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Mount Jefferson (1)
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New River (1)
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North America
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Appalachian Basin (14)
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Appalachians
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Appalachian Plateau (4)
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Blue Ridge Mountains (6)
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Blue Ridge Province (14)
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Carolina slate belt (2)
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Central Appalachians (22)
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Cumberland Plateau (1)
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Great Appalachian Valley (2)
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Northern Appalachians (1)
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Piedmont (21)
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Southern Appalachians (14)
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Valley and Ridge Province (36)
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Eastern Overthrust Belt (2)
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Gulf Coastal Plain (3)
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Michigan Basin (1)
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Rocky Mountains
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Canadian Rocky Mountains (3)
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Oceania
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Micronesia
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Marshall Islands
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Enewetak Atoll (1)
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Outer Banks (1)
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Pacific Ocean
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North Pacific (1)
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Pine Mountain Fault (2)
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Pulaski Fault (2)
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Richmond Basin (6)
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Rome Trough (1)
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Saltville Fault (2)
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Sierra Nevada (1)
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South America
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Argentina
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Pampean Mountains (1)
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United States
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Alabama (19)
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Alaska (1)
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Allegheny Plateau (2)
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Arizona (1)
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Arkansas (3)
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Arkoma Basin (1)
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Atlantic Coastal Plain
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Central Atlantic Coastal Plain (3)
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Blue Ridge Mountains (6)
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Bronson Hill Anticlinorium (1)
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California (6)
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Catskill Delta (1)
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Chesapeake Bay (11)
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Cincinnati Arch (2)
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Colorado (1)
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Columbia Plateau (1)
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Connecticut (2)
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Culpeper Basin (3)
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Dan River basin (4)
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Delaware (12)
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Delmarva Peninsula (1)
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District of Columbia (2)
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Eastern U.S.
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Southeastern U.S. (3)
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Florida (5)
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Georgia (23)
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Hudson River (2)
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Illinois
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Johnson County Illinois (1)
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Illinois Basin (1)
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Indiana (3)
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Iowa (1)
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Kentucky (25)
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Louisiana (2)
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Maryland
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Garrett County Maryland (1)
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Washington County Maryland (1)
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Massachusetts
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Suffolk County Massachusetts
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Boston Massachusetts (1)
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Midwest (4)
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Minnesota (2)
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Mississippi (7)
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Mississippi Embayment (1)
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Mississippi Valley
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Upper Mississippi Valley (1)
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Missouri (3)
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Montana (3)
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Nevada (4)
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New England (4)
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New Hampshire (1)
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New Jersey
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Somerset County New Jersey (1)
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New Madrid region (3)
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New Mexico (1)
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New York (23)
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Newark Basin (1)
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North Carolina
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Hertford County North Carolina (1)
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Ohio (32)
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Ohio River valley (1)
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Oklahoma (3)
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Oregon (1)
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Pennsylvania
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Cambria County Pennsylvania (1)
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Somerset County Pennsylvania (1)
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Potomac River (2)
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Potomac River basin (1)
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Pulaski thrust sheet (2)
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Rhode Island (1)
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Salisbury Embayment (4)
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Shenandoah Valley (5)
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South Carolina
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Charleston County South Carolina
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Charleston South Carolina (1)
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-
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Southern U.S. (1)
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Susquehanna River (1)
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Tennessee (46)
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Texas (3)
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Utah (2)
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Vermont (3)
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Virginia
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Albemarle County Virginia (4)
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Alleghany County Virginia (1)
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Augusta County Virginia (10)
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Bath County Virginia (2)
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Botetourt County Virginia (1)
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Clarke County Virginia (1)
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Craig County Virginia (1)
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Fluvanna County Virginia (1)
-
Goochland County Virginia (1)
-
Henrico County Virginia (1)
-
Highland County Virginia (2)
-
Powhatan County Virginia (1)
-
Roanoke County Virginia (1)
-
Rockbridge County Virginia (2)
-
Warren County Virginia (1)
-
Waynesboro Virginia (1)
-
-
West Virginia
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Hampshire County West Virginia (1)
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Hardy County West Virginia (1)
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Mineral County West Virginia (1)
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Pocahontas County West Virginia (1)
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Randolph County West Virginia (1)
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Upshur County West Virginia (1)
-
-
Western U.S. (1)
-
Wisconsin (4)
-
Wyoming (3)
-
Yellowstone National Park (1)
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-
-
commodities
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barite deposits (1)
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brines (1)
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ceramic materials (1)
-
construction materials
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cement materials (1)
-
-
energy sources (12)
-
gems (1)
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glass materials (1)
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heavy mineral deposits (1)
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kyanite deposits (1)
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metal ores
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base metals (1)
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copper ores (1)
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gold ores (1)
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iron ores (1)
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lead ores (1)
-
lead-zinc deposits (1)
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manganese ores (2)
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tin ores (1)
-
titanium ores (2)
-
zinc ores (2)
-
-
mineral deposits, genesis (26)
-
mineral exploration (5)
-
oil and gas fields (9)
-
petroleum
-
natural gas
-
coalbed methane (1)
-
-
-
placers (2)
-
soapstone (1)
-
water resources (1)
-
-
elements, isotopes
-
carbon
-
C-13/C-12 (3)
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C-14 (1)
-
organic carbon (2)
-
-
halogens
-
chlorine (1)
-
-
hydrogen (1)
-
isotope ratios (10)
-
isotopes
-
radioactive isotopes
-
Be-10 (1)
-
C-14 (1)
-
Pb-206/Pb-204 (1)
-
Sm-147/Nd-144 (1)
-
-
stable isotopes
-
C-13/C-12 (3)
-
Nd-144/Nd-143 (3)
-
O-18/O-16 (5)
-
Os-188/Os-187 (1)
-
Pb-206/Pb-204 (1)
-
S-34/S-32 (1)
-
Sm-147/Nd-144 (1)
-
Sr-87/Sr-86 (8)
-
-
-
metals
-
actinides
-
thorium (2)
-
uranium (2)
-
-
alkali metals
-
potassium (1)
-
-
alkaline earth metals
-
beryllium
-
Be-10 (1)
-
-
calcium
-
Mg/Ca (1)
-
-
magnesium
-
Mg/Ca (1)
-
-
strontium
-
Sr-87/Sr-86 (8)
-
-
-
aluminum (1)
-
copper (4)
-
gold (1)
-
iron (7)
-
lead
-
Pb-206/Pb-204 (1)
-
-
manganese (5)
-
mercury (1)
-
niobium (1)
-
platinum group
-
osmium
-
Os-188/Os-187 (1)
-
-
-
rare earths
-
neodymium
-
Nd-144/Nd-143 (3)
-
Sm-147/Nd-144 (1)
-
-
samarium
-
Sm-147/Nd-144 (1)
-
-
-
silver (1)
-
tin (2)
-
titanium (4)
-
zinc (4)
-
-
noble gases
-
radon (1)
-
-
oxygen
-
O-18/O-16 (5)
-
-
sulfur
-
S-34/S-32 (1)
-
-
-
fossils
-
borings (5)
-
Chordata
-
Vertebrata
-
Pisces
-
Osteichthyes
-
Actinopterygii (1)
-
-
-
Tetrapoda
-
Mammalia
-
Theria
-
Eutheria
-
Rodentia (1)
-
-
-
-
Reptilia
-
Diapsida
-
Archosauria
-
Crocodilia
-
Eusuchia (1)
-
-
-
-
-
-
-
-
Graptolithina
-
Graptoloidea (2)
-
-
Hemichordata (1)
-
Invertebrata
-
Arthropoda
-
Mandibulata
-
Crustacea
-
Cirripedia (1)
-
Ostracoda (5)
-
-
Insecta
-
Pterygota
-
Neoptera
-
Exopterygota
-
Thysanoptera (1)
-
-
-
-
-
-
Trilobitomorpha
-
Trilobita
-
Agnostida (2)
-
Phacopida
-
Phacopina (1)
-
-
Ptychopariida
-
Asaphidae (1)
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Cryptolithus (1)
-
Proetidae (1)
-
-
-
-
-
Brachiopoda
-
Articulata
-
Rhynchonellida (1)
-
Spiriferida
-
Atrypidae (1)
-
-
-
Inarticulata (1)
-
-
Bryozoa (1)
-
Cnidaria
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Anthozoa (1)
-
Hydrozoa (1)
-
-
Echinodermata
-
Crinozoa
-
Crinoidea (1)
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Cystoidea (1)
-
-
Echinozoa
-
Edrioasteroidea (1)
-
-
-
Mollusca
-
Bivalvia
-
Ostreoidea (2)
-
Pterioida
-
Pteriina
-
Pectinacea
-
Pectinidae (1)
-
-
-
-
-
Cephalopoda
-
Ammonoidea (1)
-
-
Gastropoda
-
Naticidae (2)
-
-
Hyolithes (1)
-
-
Porifera
-
Stromatoporoidea (1)
-
-
Protista
-
Foraminifera
-
Rotaliina
-
Rotaliacea
-
Elphidium
-
Elphidium excavatum (1)
-
-
-
-
-
Radiolaria
-
Osculosida
-
Nassellina (1)
-
-
Spumellina (1)
-
-
Silicoflagellata (1)
-
-
Vermes
-
Annelida (1)
-
-
-
microfossils
-
Conodonta (6)
-
-
palynomorphs
-
acritarchs (2)
-
Dinoflagellata (2)
-
miospores
-
pollen (3)
-
-
-
Plantae
-
algae
-
diatoms (4)
-
-
Pteridophyta
-
Lycopsida (1)
-
-
Spermatophyta
-
Angiospermae (1)
-
Gymnospermae
-
Coniferales (1)
-
-
-
-
Pterobranchia (1)
-
thallophytes (4)
-
-
geochronology methods
-
(U-Th)/He (1)
-
Ar/Ar (3)
-
fission-track dating (1)
-
K/Ar (1)
-
Nd/Nd (1)
-
Pb/Pb (1)
-
Pb/Th (1)
-
Rb/Sr (5)
-
Sm/Nd (1)
-
tephrochronology (1)
-
U/Pb (8)
-
-
geologic age
-
Cenozoic
-
Quaternary
-
Holocene
-
Atlantic (1)
-
upper Holocene (2)
-
-
Pleistocene
-
upper Pleistocene (1)
-
-
upper Quaternary (2)
-
-
Tertiary
-
Neogene
-
Cohansey Formation (1)
-
Miocene
-
Calvert Formation (9)
-
lower Miocene
-
Burdigalian (1)
-
-
middle Miocene
-
Choptank Formation (5)
-
-
Saint Marys Formation (2)
-
upper Miocene
-
Eastover Formation (5)
-
-
-
Pliocene
-
upper Pliocene
-
Chowan River Formation (5)
-
-
Yorktown Formation (14)
-
-
-
Paleogene
-
Eocene
-
Castle Hayne Limestone (1)
-
lower Eocene
-
Aquia Formation (4)
-
Hatchetigbee Formation (1)
-
-
middle Eocene
-
Claiborne Group (1)
-
Cook Mountain Formation (1)
-
Lisbon Formation (2)
-
Santee Limestone (1)
-
-
Nanjemoy Formation (2)
-
upper Eocene
-
Jackson Group (1)
-
Moodys Branch Formation (2)
-
Piney Point Formation (3)
-
Yazoo Clay (1)
-
-
-
Oligocene (1)
-
Paleocene
-
upper Paleocene
-
Thanetian (1)
-
-
-
-
-
upper Cenozoic
-
Chesapeake Group (6)
-
-
-
Mesozoic
-
Cretaceous
-
Upper Cretaceous
-
Campanian (1)
-
Senonian (1)
-
Tuolumne Intrusive Suite (1)
-
Turonian (1)
-
-
-
Jurassic
-
Lower Jurassic
-
Toarcian (1)
-
upper Liassic (1)
-
-
-
lower Mesozoic (1)
-
Newark Supergroup (5)
-
Triassic
-
Middle Triassic
-
Ladinian (1)
-
-
Upper Triassic
-
Carnian (5)
-
Norian (3)
-
Rhaetian (1)
-
-
-
-
Paleozoic
-
Bedford Shale (1)
-
Berea Sandstone (2)
-
Cambrian
-
Conasauga Group (2)
-
Lower Cambrian
-
Antietam Formation (3)
-
Chilhowee Group (3)
-
Rome Formation (4)
-
Shady Dolomite (1)
-
-
Pioche Shale (1)
-
Upper Cambrian
-
Copper Ridge Dolomite (2)
-
-
-
Carboniferous
-
Mississippian
-
Lower Mississippian
-
Pocono Formation (1)
-
-
Upper Mississippian
-
Chesterian (2)
-
Hinton Formation (1)
-
-
-
Pennsylvanian
-
Lower Pennsylvanian
-
Lee Formation (2)
-
New River Formation (1)
-
Pocahontas Formation (5)
-
-
-
-
Devonian
-
Lower Devonian
-
Emsian (2)
-
Lochkovian (2)
-
Oriskany Sandstone (5)
-
Pragian (1)
-
-
Middle Devonian
-
Eifelian (2)
-
Hamilton Group (2)
-
Mahantango Formation (1)
-
Marcellus Shale (2)
-
Onondaga Limestone (2)
-
Tully Limestone (2)
-
-
Millboro Shale (2)
-
Upper Devonian
-
Brallier Shale (1)
-
Chemung Formation (1)
-
Huron Member (1)
-
Ohio Shale (1)
-
West Falls Formation (1)
-
-
-
Helderberg Group (3)
-
Keyser Limestone (1)
-
Knox Group (6)
-
lower Paleozoic
-
Ashe Formation (2)
-
Conococheague Formation (7)
-
Glenarm Series (2)
-
-
Ordovician
-
Clays Ferry Formation (1)
-
Eureka Quartzite (1)
-
Lexington Limestone (1)
-
Lower Ordovician
-
Beekmantown Group (2)
-
Kingsport Formation (1)
-
Mascot Dolomite (1)
-
-
Martinsburg Formation (4)
-
Middle Ordovician
-
Blackriverian (1)
-
Bromide Formation (1)
-
Chazyan (1)
-
Deicke Bentonite Bed (3)
-
Millbrig Bentonite Bed (3)
-
Normanskill Formation (1)
-
Schenectady Formation (1)
-
-
Trenton Group (1)
-
Upper Ordovician
-
Cincinnatian (1)
-
Fairview Formation (1)
-
Juniata Formation (3)
-
Katian (1)
-
Mohawkian (1)
-
Sandbian (1)
-
Trentonian (3)
-
-
Utica Shale (1)
-
Viola Limestone (1)
-
-
Permian (2)
-
Rondout Formation (2)
-
Silurian
-
Clinch Sandstone (1)
-
Lower Silurian
-
Tuscarora Formation (2)
-
-
Middle Silurian
-
Clinton Group (1)
-
Rose Hill Formation (1)
-
-
Upper Silurian
-
Pridoli (1)
-
-
-
upper Paleozoic (1)
-
-
Phanerozoic (2)
-
Precambrian
-
Catoctin Formation (10)
-
upper Precambrian
-
Proterozoic
-
Mesoproterozoic (3)
-
Neoproterozoic
-
Lynchburg Formation (2)
-
-
-
-
-
-
igneous rocks
-
igneous rocks
-
carbonatites (1)
-
hypabyssal rocks (1)
-
plutonic rocks
-
anorthosite (1)
-
diabase (3)
-
diorites
-
quartz diorites (1)
-
-
gabbros
-
norite (1)
-
-
granites
-
alkali granites (1)
-
A-type granites (1)
-
-
granodiorites (1)
-
pegmatite (2)
-
quartz monzonite (1)
-
-
volcanic rocks
-
adakites (1)
-
andesites (1)
-
basalts
-
mid-ocean ridge basalts (1)
-
-
pyroclastics
-
tuff (3)
-
-
-
-
volcanic ash (4)
-
-
metamorphic rocks
-
K-bentonite (5)
-
metabentonite (2)
-
metamorphic rocks
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amphibolites (1)
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halides
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K-bentonite (5)
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xonotlite (1)
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orthosilicates
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epidote group
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ring silicates
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Primary terms
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absolute age (19)
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Africa
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carbon
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Cenozoic
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Tertiary
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Cohansey Formation (1)
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Calvert Formation (9)
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Burdigalian (1)
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middle Miocene
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Choptank Formation (5)
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-
Saint Marys Formation (2)
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upper Miocene
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Eastover Formation (5)
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-
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Pliocene
-
upper Pliocene
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Chowan River Formation (5)
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-
Yorktown Formation (14)
-
-
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Paleogene
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Eocene
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Castle Hayne Limestone (1)
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lower Eocene
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Aquia Formation (4)
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Hatchetigbee Formation (1)
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middle Eocene
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Claiborne Group (1)
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Cook Mountain Formation (1)
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Lisbon Formation (2)
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Santee Limestone (1)
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-
Nanjemoy Formation (2)
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upper Eocene
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Jackson Group (1)
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Moodys Branch Formation (2)
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Piney Point Formation (3)
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Yazoo Clay (1)
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-
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Oligocene (1)
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Paleocene
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upper Paleocene
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Thanetian (1)
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-
-
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upper Cenozoic
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Chesapeake Group (6)
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Central America
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ceramic materials (1)
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Chordata
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Vertebrata
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Pisces
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Osteichthyes
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Actinopterygii (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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Rodentia (1)
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Reptilia
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Diapsida
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Archosauria
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clay mineralogy (7)
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Graptolithina
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inclusions
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intrusions (13)
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Invertebrata
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Cirripedia (1)
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Insecta
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Pterygota
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Neoptera
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Exopterygota
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Thysanoptera (1)
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Trilobitomorpha
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Trilobita
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Agnostida (2)
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Phacopida
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Phacopina (1)
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Ptychopariida
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Asaphidae (1)
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Proetidae (1)
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-
-
-
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Brachiopoda
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Articulata
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Rhynchonellida (1)
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Spiriferida
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Atrypidae (1)
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-
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Inarticulata (1)
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Cnidaria
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Echinodermata
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Crinozoa
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Echinozoa
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-
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Mollusca
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Bivalvia
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Ostreoidea (2)
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Pterioida
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Pteriina
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Pectinacea
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Pectinidae (1)
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-
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-
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Cephalopoda
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Ammonoidea (1)
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Gastropoda
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Naticidae (2)
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Hyolithes (1)
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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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Rotaliacea
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Elphidium
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Elphidium excavatum (1)
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Radiolaria
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Osculosida
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Nassellina (1)
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Silicoflagellata (1)
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Vermes
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O-18/O-16 (5)
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Os-188/Os-187 (1)
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Sr-87/Sr-86 (8)
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Mesozoic
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Cretaceous
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Upper Cretaceous
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Jurassic
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lower Mesozoic (1)
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Newark Supergroup (5)
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Triassic
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Ladinian (1)
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Upper Triassic
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Carnian (5)
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metal ores
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metals
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alkaline earth metals
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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 (8)
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aluminum (1)
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Pb-206/Pb-204 (1)
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manganese (5)
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platinum group
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osmium
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Os-188/Os-187 (1)
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-
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rare earths
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neodymium
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Nd-144/Nd-143 (3)
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Sm-147/Nd-144 (1)
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samarium
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Sm-147/Nd-144 (1)
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silver (1)
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metamorphic rocks
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amphibolites (1)
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impactites
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metacarbonate rocks (1)
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metabasalt (2)
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metasedimentary rocks (1)
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metavolcanic rocks (1)
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Mexico (2)
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North America
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Valley and Ridge Province (36)
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Eastern Overthrust Belt (2)
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ocean waves (1)
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Oceania
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oceanography (5)
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oxygen
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O-18/O-16 (5)
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Pacific Ocean
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paleobotany (4)
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paleoclimatology (10)
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paleoecology (12)
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paleogeography (16)
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paleontology (47)
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Paleozoic
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Bedford Shale (1)
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Berea Sandstone (2)
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Cambrian
-
Conasauga Group (2)
-
Lower Cambrian
-
Antietam Formation (3)
-
Chilhowee Group (3)
-
Rome Formation (4)
-
Shady Dolomite (1)
-
-
Pioche Shale (1)
-
Upper Cambrian
-
Copper Ridge Dolomite (2)
-
-
-
Carboniferous
-
Mississippian
-
Lower Mississippian
-
Pocono Formation (1)
-
-
Upper Mississippian
-
Chesterian (2)
-
Hinton Formation (1)
-
-
-
Pennsylvanian
-
Lower Pennsylvanian
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Lee Formation (2)
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New River Formation (1)
-
Pocahontas Formation (5)
-
-
-
-
Devonian
-
Lower Devonian
-
Emsian (2)
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Lochkovian (2)
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Oriskany Sandstone (5)
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Pragian (1)
-
-
Middle Devonian
-
Eifelian (2)
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Hamilton Group (2)
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Mahantango Formation (1)
-
Marcellus Shale (2)
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Onondaga Limestone (2)
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Tully Limestone (2)
-
-
Millboro Shale (2)
-
Upper Devonian
-
Brallier Shale (1)
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Chemung Formation (1)
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Huron Member (1)
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Ohio Shale (1)
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West Falls Formation (1)
-
-
-
Helderberg Group (3)
-
Keyser Limestone (1)
-
Knox Group (6)
-
lower Paleozoic
-
Ashe Formation (2)
-
Conococheague Formation (7)
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Glenarm Series (2)
-
-
Ordovician
-
Clays Ferry Formation (1)
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Eureka Quartzite (1)
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Lexington Limestone (1)
-
Lower Ordovician
-
Beekmantown Group (2)
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Kingsport Formation (1)
-
Mascot Dolomite (1)
-
-
Martinsburg Formation (4)
-
Middle Ordovician
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Blackriverian (1)
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Bromide Formation (1)
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Chazyan (1)
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Deicke Bentonite Bed (3)
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Millbrig Bentonite Bed (3)
-
Normanskill Formation (1)
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Schenectady Formation (1)
-
-
Trenton Group (1)
-
Upper Ordovician
-
Cincinnatian (1)
-
Fairview Formation (1)
-
Juniata Formation (3)
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Katian (1)
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Mohawkian (1)
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Sandbian (1)
-
Trentonian (3)
-
-
Utica Shale (1)
-
Viola Limestone (1)
-
-
Permian (2)
-
Rondout Formation (2)
-
Silurian
-
Clinch Sandstone (1)
-
Lower Silurian
-
Tuscarora Formation (2)
-
-
Middle Silurian
-
Clinton Group (1)
-
Rose Hill Formation (1)
-
-
Upper Silurian
-
Pridoli (1)
-
-
-
upper Paleozoic (1)
-
-
palynology (1)
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palynomorphs
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acritarchs (2)
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Dinoflagellata (2)
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miospores
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pollen (3)
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paragenesis (4)
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petroleum
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natural gas
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coalbed methane (1)
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-
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petrology (30)
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Phanerozoic (2)
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phase equilibria (2)
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placers (2)
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Plantae
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algae
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diatoms (4)
-
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Pteridophyta
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Lycopsida (1)
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Spermatophyta
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Angiospermae (1)
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Gymnospermae
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Coniferales (1)
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-
-
plate tectonics (13)
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pollution (5)
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Precambrian
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Catoctin Formation (10)
-
upper Precambrian
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Proterozoic
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Mesoproterozoic (3)
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Neoproterozoic
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Lynchburg Formation (2)
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Pterobranchia (1)
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remote sensing (5)
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roads (2)
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sea-level changes (17)
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sedimentary petrology (33)
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sedimentary rocks
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dolostone (4)
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grainstone (2)
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limestone
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oolitic limestone (1)
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packstone (2)
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wackestone (1)
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chemically precipitated rocks
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chert (2)
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clastic rocks
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arenite
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quartz arenite (3)
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argillite (1)
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arkose (2)
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bentonite (4)
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black shale (4)
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claystone (1)
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conglomerate (9)
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