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