Island Park, Green River. Dinosaur National Monument. Uintah County, Utah. July 1871. USGS Earth Science Photographic Archive digital file: hjk00681 At the downstream end of Whirlpool Canyon, the bedrock changes from Paleozoic age to Mesozoic age. Cliffs of cross-bedded sandstone of the Glen Canyon Formation (Late Triassic to Early Jurassic) crop out around the broad cove at Island Park.

The URL is: https://gotbooks.miracosta.edu/gonp/3Dcanyons/pages/dino29.htm Last modified: 2/14/2004