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The Grabens 300 million year formation period

dlamberth

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I came across an interesting to me, geological processes that led to the development of the Grabens that began approximately 300 million years ago. Over time various geological changes came into play until finally about 55,000 years ago the ingredients were in place and the Grabens began to form. The Grabens are in the Canyonlands National Park in Utah.

https://www.nps.gov/articles/cany-grabens.htm
 
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DaisyDay

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For my fellow ignorami:
A graben is a collapsed or down-dropped block of rock that is bordered on its long sides by faults. Grabens are normally associated with horsts, which are the up-thrown blocks of rock in between. (Both words are of German origin: graben meaning ditch or grave and horst meaning aerie, referring to the high nesting sites of predatory birds.) The Grabens in The Needles district of Canyonlands is a system of linear collapsed valleys caused by the movement of underlying salt layers toward the Colorado River canyon. The grabens begin near the Confluence of the Green and Colorado rivers and run roughly parallel to Cataract Canyon for 25 km, veering slightly westward before they end.
 
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