Great unconformity, Grand Canyon (vertical) April 30, 2017/0 Comments/in Grand Canyon Grand Canyon, Unconformities /by Davol Colorado River, erosion, incision https://geologypics.com/wp-content/uploads/2017/07/geology-pics.png 0 0 Davol https://geologypics.com/wp-content/uploads/2017/07/geology-pics.png Davol2017-04-30 20:29:522019-02-19 00:50:51Great unconformity, Grand Canyon (vertical)
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