Geological concretions, Moenkopi Dinosaur Tracks site near Tuba City, Arizona, United States.

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These concretions have been removed from the surrounding sandstone and flipped. These were described to me as being dinosaur poo (coprolites) but they are completely normal iron concretions. A concretion is a hard, compact mass of matter formed by the precipitation of mineral cement within the spaces between particles, and is found in sedimentary rock or soil.

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Size: 5184px × 3456px
Location: Moenkopi Dinosaur Tracks near Tuba City, Arizona, United States.
Photo credit: © Maurice Savage / Alamy / Afripics
License: Licensed
Model Released: No

Keywords: 160, america, american, attraction, az, city, concretion, concretions, coprolite, coprolites, dinosaur, geological, geology, historic, iron, moenkopi, navajo, rock, route, sedimentary, states, summer, tourist, tracks, tuba, united, usa