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The individual rift segments have a dominantly half-graben geometry, controlled by a single basin-bounding fault. Segment lengths vary between rifts, depending on the elastic thickness of the lithosphere.
Graphical geometry of a propagating rift. Red arrow indicates spreading direction. A propagating rift is a seafloor feature associated with spreading centers at mid-ocean ridges and back-arc basins. [1] They are more commonly observed on faster rate spreading centers (50 mm/year or more). [2]
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 ]
As the rift valley aged, extensive deformation developed on both sides of the lake, converting them into asymmetric full grabens. [8] A generalized cross section of the Albuquerque Basin from east to west. Note the half-graben geometry, Paleozoic and Mesozoic sediments that existed pre-rift, and the large (up to 28%) amount of extension. [11]
A passive margin forms by sedimentation above an ancient rift, now marked by transitional lithosphere. Continental rifting forms new ocean basins. Eventually the continental rift forms a mid-ocean ridge and the locus of extension moves away from the continent-ocean boundary. The transition between the continental and oceanic lithosphere that ...
The individual rift basins that make up the rift system have an overall en echelon geometry, consistent with a right lateral sense of strike-slip displacement across the zone. [2] The basins contain a thick sedimentary sequence of Neogene age, which ranges from 2.0 to 3.8 km (1.2 to 2.4 mi) in thickness.
The Atlantic rift zone is associated with the North Sea rifts zone. [13] "Rift basins share similar characteristics and histories, one that is conducive to evaporite deposition. They typically form during extension of the earth's crust with a distinct basement architecture made up of grabens and half-grabens segmented by transverse structures ...
A rift is the result of pulling apart or extension of lithosphere, including the crust, caused by mantle upwelling where hotter asthenosphere magma rises up into the colder lithosphere to stretch and thin it. The internal dynamics of a rift system. The triple rift is thought to have begun in the Late Cretaceous epoch to the Paleogene period. At ...