Image: Precambrian - Cambrian Unconformity in Grand Canyon
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Description: Angular unconformity between horizontal Tonto Group rocks (of Cambrian age) on top of tilted Grand Canyon Supergroup rocks (1.1-1.2 Ga of Mesoproterozoic age) in the Grand Canyon, Arizona, USA. (Apollo Temple landform, below East Rim, north bank of Colorado River, near Unkar Creek(?).)
Title: Precambrian - Cambrian Unconformity in Grand Canyon
Credit: https://www.flickr.com/photos/jsjgeology/8388115563/sizes/o/in/photostream/
Author: James St. John (jsj1771) https://www.flickr.com/people/jsjgeology/
Usage Terms: Creative Commons Attribution 2.0
License: CC BY 2.0
License Link: https://creativecommons.org/licenses/by/2.0
Attribution Required?: Yes
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