File:Morrison Formation (Upper Jurassic; between Black Ridge & Monument Canyon, Colorado National Monument, Colorado, USA) 1 (23996204085).jpg
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Summary
| Description |
Colorado National Monument is a colorful and scenic park just southwest of the town of Grand Junction in western Colorado, USA. It's located in the northeastern part of the Colorado Plateau Physiographic Province, a large section of continental crust that was significant uplifted during the Cenozoic. The rocks in the park are gently folded into a large monocline that has been erosionally dissected into a series of dramatic canyons. The outcrop shown above is the Morrison Formation, a heterolithic Upper Jurassic succession that is widely distributed in many western American states. The Morrison consists of fluvial (river/floodplain) and lacustrine (lake) deposits. Dinosaur bones and dinosaur tracks are moderately common in Morrison Formation sediments (exceptionally rich localities include Como Bluff in Wyoming, Dinosaur National Monument in Utah, Dinosaur Ridge in Colorado, and the Cleveland-Lloyd Quarry in Utah). The cliff at top is the Salt Wash Member of the Morrison Formation. The slopes below are Tidwell Member rocks. Stratigraphy: Morrison Formation, Kimmeridgian Stage, middle Upper Jurassic, ~150 to 156 Ma Locality: outcrop between Black Ridge & Monument Canyon (view from Highland View overlook), Colorado National Monument, southwest of the town of Grand Junction, west-central Mesa County, far-western Colorado, USA |
| Date | |
| Source | Morrison Formation (Upper Jurassic; between Black Ridge & Monument Canyon, Colorado National Monument, Colorado, USA) 1 |
| Author | James St. John |
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This image was originally posted to Flickr by James St. John at https://flickr.com/photos/47445767@N05/23996204085 (archive). It was reviewed on 6 December 2019 by FlickreviewR 2 and was confirmed to be licensed under the terms of the cc-by-2.0. |
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| Date/Time | Thumbnail | Dimensions | User | Comment | |
|---|---|---|---|---|---|
| current | 03:59, 6 December 2019 | | 3,007 × 1,895 (4.76 MB) | Ser Amantio di Nicolao | Transferred from Flickr via #flickr2commons |
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