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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 ...
The Atlantic continental margin off Portugal and Spain is unique. [citation needed] In the zone between continental crust and oceanic crust there is a 100 km wide zone of exhumed continental mantle. During the rift splitting Newfoundland from Iberia there was very little vulcanism and the rift was starved of magma.
In geology, anorogenic magmatism is the formation, intrusion or eruption of magmas not directly connected with orogeny (mountain building). [1] Anorogenic magmatism occurs, for example, at mid-ocean ridges, hotspots and continental rifts.
Fundy Basin – Sediment-filled rift basin on the Atlantic coast of southeastern Canada; Gulf of Suez Rift – Continental rift zone that was active between the Late Oligocene and the end of the Miocene; Gulf St Vincent – South Australian southern coast water inlet bordered by the Yorke and Fleurieu Peninsulas
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 ...
Continental-continental divergent/constructive boundary Oceanic divergent boundary: mid-ocean ridge (cross-section/cut-away view). In plate tectonics, a divergent boundary or divergent plate boundary (also known as a constructive boundary or an extensional boundary) is a linear feature that exists between two tectonic plates that are moving away from each other.
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 ] The rift extends from central Colorado in the north to the state of Chihuahua , Mexico , in the south. [ 2 ]
The Taupō Rift (Taupo Rift) is a 300 km (190 mi) [3] intra-arc continental rift resulting from an oblique convergence in the Hikurangi subduction zone.The present young, modern Taupō Rift is defined by events between 25,000 and 350,000 years [4] and the old Taupō Rift system, which can be defined by a gravity anomaly, is now located more to the north being created between 350,000 and 2 ...