Colorado 13
Nevada 13
California 9
Alaska 6
Creede Formation (Colo.) 6
Oregon 6
Utah 6
Washington (State) 6
Dawes County 4
Kern County 4
Nebraska 4
Puerto Rico 4
Creede Formation 3
Gulf Coast (U.S.) 3
North Carolina 3
Nye County 3
South Dakota 3
Texas 3
Washington County 3
Alaska, Gulf of, Region 2
Canal Zone 2
Chaffee County 2
Columbia County 2
Cook Inlet Region 2
Egypt 2
Fayyūm (Province) 2
Fiji 2
Lake County 2
Luzon 2
Marysvale 2
Marysvale Region 2
Mississippi 2
Moffat County 2
Navarin Basin 2
Needles Range Group (Utah and Nev.) 2
Olympic Peninsula 2
Panama 2
Park County 2
Philippines 2
Pioche Region 2
Saint Croix 2
San Juan Mountains (Colo. and N.M.) 2
Santa Cruz Mountains 2
Sitkinak Island 2
Tyonek Formation (Alaska) 2
United States Virgin Islands 2
Viti Levu 2
Wah Wah Mountains 2
White River Group 2
Alabama 1
Alpes-Maritimes 1
Arizona 1
Bad Lands 1
Badlands National Park 1
Badlands National Park (S.D.) 1
Cheyenne Basin (Colo. and Wyo.) 1
Chinati Mountains 1
Clallam County 1
Cochise County 1
Creede Region 1
Czech Republic 1
Duchesne County 1
Europe 1
Florida 1
France 1
Gabilan Range 1
Goldfield Mining District (Nev.) 1
Grays Harbor 1
Grays Harbor basin 1
King County 1
Lewis, Mount 1
Lincoln County 1
Maritime Alps (France and Italy) 1
Markagunt Plateau (Utah) 1
Marysvale Canyon (Utah) 1
Middle West 1
Moravia 1
Oregon Coast Range 1
Poland 1
San Andreas Fault 1
San Gabriel Mountains Region 1
Santa Maria Basin 1
Shoshone Mountains 1
Trans-Pecos (Tex. and N.M.) 1
Uintah County 1
United States 1
Windous Butte Formation (Nev.) 1