Region
United States
2
Alaska
1
Albuquerque Basin (N.M.)
1
America
1
Antarctica
1
California
1
Canada
1
Dnieper-Donets Basin
1
North Slope
1
Pacific Area
1
Pannonia Region
1
Pripet River Watershed (Ukraine and Belarus)
1
Recôncavo Basin (Brazil)
1
Rocky Mountains
1
San Emigdio Mountains (Calif.)
1
South Atlantic Ocean
1
Suez, Gulf of, Watershed
1
Transverse Ranges
1
Transverse Ranges (Calif.)
1
West (U.S.)
1