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This map shows the locations of the Superior province, Penokean orogeny, Minnesota River Valley subprovince, Great Lakes tectonic zone (Minnesota's portion) and the present-day location of the Wyoming province. Early Archean rocks generally form elongate, domal or circular bodies that are several kilometers thick.
The Walker Lane deformation belt also accommodates nearly 12 mm/yr of dextral shear between the Sierra Nevada–Great Valley Block and North America. [7] [8] The belt is characterized by the northwest-striking trans-current faults and co-evolutionary dip-slip faults formed as result of a spatially segregated displacement field. [9]
Rifting began as magma welled up through the weakness in the crust, creating a volcanic rift zone. Volcanic eruptions spewed ash and volcanic debris across the landscape as these severed continent-sized fragments of Pangea diverged. [20] The gash between the spreading continents gradually grew to form a new ocean basin, the Atlantic. The rift ...
Bathymetry of the northeast corner of the Caribbean plate showing the major faults and plate boundaries; view looking south-west. The main bathymetric features of this area include: the Lesser Antilles Volcanic Arc; the old inactive volcanic arc of the Greater Antilles (Virgin Islands, Puerto Rico, and Hispaniola); the Muertos Trough; and the Puerto Rico Trench formed at the plate boundary ...
Map all coordinates using OpenStreetMap. Download coordinates as: KML; GPX (all coordinates) ... Jornada del Muerto Volcano: 1,565: 5,136 760,000 years ago ...
On a map showing only volcanic rocks, the west coast of North America shows a striking continuous north–south structure, the American Cordillera. The North American Cordillera extends up and down the coast of North America and roughly from the Great Plains westward to the Pacific Ocean , narrowing somewhat from north to south.
San Andreas Fault System (Banning fault, Mission Creek fault, South Pass fault, San Jacinto fault, Elsinore fault) 1300: California, United States: Dextral strike-slip: Active: 1906 San Francisco (M7.7 to 8.25), 1989 Loma Prieta (M6.9) San Ramón Fault: Chile: Thrust fault: Sawtooth Fault: Idaho, United States: Normal fault: Seattle Fault ...
The New Madrid seismic zone (NMSZ), sometimes called the New Madrid fault line (or fault zone or fault system), is a major seismic zone and a prolific source of intraplate earthquakes (earthquakes within a tectonic plate) in the Southern and Midwestern United States, stretching to the southwest from New Madrid, Missouri.