No Turn On Red

No Turn On Red

Sunday, April 29, 2018

Dusty Jeans & Genes - Part 4 - Dinosaur National Monument - Quarry

Saturday, 21 April 2018

Dinosaur National Monument was the source of several complete dinosaur skeletons in the early 20th Century. Since Andrew Carnegie financed the expeditions to this site, many of the skeletons can now be seen in the Carnegie Museum in Pittsburgh. When the demand for more Apatosaurus, Camarasaurus, Allosaurus, etc. skeletons diminished, the site was made a National Monument, and the bone "quarry" was put under roof to preserve the remaining specimens in a museum setting.

The remaining mountainside was enclosed in a glass-and-steel structure.
A wall of bones is visible from two viewing levels. Some of the in situ fossils are available to touch and view up close.
The mountain still holds a lot of bones of many species.
The bones are all jumbled up. Presumably the animals were swept down river in floods and accumulated on a sandbar. Mostly large animals are found. Fossils of smaller animals are scarce, since they were more easily swept along in the rushing water.
The slope is somewhat unstable. Electronic strain gauges recently have been attached to cracks to monitor changes in the rock wall.


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