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USGS Geology in the Parks

Geologic Provinces of the United States: National Parks listed by tectonic setting

(courtesy of Bob Lillie)

Divergent plate boundaries

CONTINENTAL RIFTS

Basin and Range Province (Active)

Rio Grande Rift (Active)

Keweenawan Rift (Ancient)

PASSIVE CONTINENTAL MARGINS

Atlantic Coast

Gulf of Mexico Coast

MID-OCEAN RIDGES

(None)

Convergent plate boundaries

OCEAN—OCEAN SUBDUCTION ZONES

Aleutian Islands/Alaska Pen.

Western Pacific

OCEAN-CONTINENT SUBDUCTION ZONES

Coast Ranges (Accretionary Wedge)

Alaska (Active Volcanic Arc)

Cascade Mountains (Active Volcanic Arc)

Sierra NV Mountains (Ancient Volcanic Arc)

Laramide Uplifts (Low-Angle Subduction)

COLLISIONAL MOUNTAIN RANGES

Appalachian Mountains

Ouachita Mountains

Marathon Mountains

Brooks Range

ACCRETED TERRANES

North American Cordillera

Transform plate boundaries

San Andreas Fault

Southeast Alaska

Caribbean

Hotspots

OVER OCEANIC CRUST

Hawaii - Emperor

OVER CONTINENTAL CRUST

Yellowstone-Snake River Plain-Columbia Plateau

Areas not easily associated with plate boundaries or hotspots

Colorado Plateau

Stable Craton

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