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  2. Midcontinent Rift System - Wikipedia

    en.wikipedia.org/wiki/Midcontinent_Rift_System

    The Midcontinent Rift System (MRS) or Keweenawan Rift is a 2,000 km (1,200 mi) long geological rift in the center of the North American continent and south-central part of the North American plate. It formed when the continent's core, the North American craton , began to split apart during the Mesoproterozoic era of the Precambrian , about 1.1 ...

  3. Rio Grande rift - Wikipedia

    en.wikipedia.org/wiki/Rio_Grande_rift

    Locality map showing the Rio Grande rift extending from southern Colorado to Chihuahua, Mexico. The Rio Grande follows this rift for much of its course. The Rio Grande rift is a north-trending continental rift zone. It separates the Colorado Plateau in the west from the interior of the North American craton on the east. [1]

  4. New Madrid seismic zone - Wikipedia

    en.wikipedia.org/wiki/New_Madrid_Seismic_Zone

    Magnetic potential map of the Reelfoot Rift 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 ...

  5. Rift - Wikipedia

    en.wikipedia.org/wiki/Rift

    Block view of a rift formed of three segments, showing the location of the accommodation zones between them at changes in fault location or polarity (dip direction) Gulf of Suez Rift showing main extensional faults. In geology, a rift is a linear zone where the lithosphere is being pulled apart [1] [2] and is an example of extensional tectonics ...

  6. Canadian Arctic Rift System - Wikipedia

    en.wikipedia.org/wiki/Canadian_Arctic_Rift_System

    The Canadian Arctic Rift System is a branch of the Mid-Atlantic Ridge that extends 4,800 km (3,000 mi) into the North American continent. It is an incipient structure that diminishes in degree of development northwestward, bifurcates at the head of Baffin Bay and disappears into the Arctic Archipelago.

  7. List of tectonic plate interactions - Wikipedia

    en.wikipedia.org/wiki/List_of_tectonic_plate...

    Obduction zones occurs when the continental plate is pushed under the oceanic plate, but this is unusual as the relative densities of the tectonic plates favours subduction of the oceanic plate. This causes the oceanic plate to buckle and usually results in a new mid-ocean ridge forming and turning the obduction into subduction.

  8. Geology of the United States - Wikipedia

    en.wikipedia.org/wiki/Geology_of_the_United_States

    The rift zone known as the mid-Atlantic ridge continued to provide the raw volcanic materials for the expanding ocean basin. [20] North America was slowly pulled westward away from the rift zone. The thick continental crust that made up the new east coast collapsed into a series of down-dropped fault blocks that roughly parallel today's coastline.

  9. Gulf of California Rift Zone - Wikipedia

    en.wikipedia.org/wiki/Gulf_of_California_Rift_Zone

    The Gulf of California Rift Zone (GCRZ) is the northernmost extension of the East Pacific Rise which extends some 1,300 km (800 mi) from the mouth of the Gulf of California to the southern terminus of the San Andreas Fault at the Salton Sink. The GCRZ is an incipient rift zone akin to the Red Sea Rift.