Taphonomy and Rare Earth Element Geochemistry of the Stegosaurus sp. at the Cleveland Lloyd Dinosaur Quarry, Emery County, Utah. by Celina Suarez Trinity University Temple University San Antonio, TX Philadelphia, PA. Geologic Setting. Morrison Formation Brushy Basin Member
Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author.While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server.
by Celina Suarez
Trinity University Temple University
San Antonio, TX Philadelphia, PA
Excavation and Mapping => biostratigraphic positions and orientation of bones
Taphonomic Analysis => abrasion, weathering, fracture, surface traces
Rare Earth Element Geochemistry => concentrations and ratios
OtherMapping and Excavation
Sauropod and Stegosaur
1mmResults: Lithology – Thin Sections
All bones have similar signatures (shape)
All bones are fossilized in same environment
Signatures of bones in the quarry are flat with a slight depletion of HREE indicating a neutral pH to slightly acidic environment
Eu anomaly indicates volcaniclastic REE source
Neutral pH environment
* rip-up clasts
REE concentrations of total data set:
Includes bones from quarry: mudstone, contact, and capping limestone; plus limestone ridge to the north
and Paleoecology of the dinosaur beds of the Jurassic Morrison Formation:
Paleobiology, v. 6, no. 2, p. 208 – 232.
drought-induced assemblage: late Jurassic Morrison Formation,
central Utah [Master of Science Thesis]: Salt Lake City, Utah University of Utah, 57p.