Websundance, gypsum spring, and nugget formations (upper and middle jurassic and jurassic? and triassic?) gn gypsum spring formation and nugget sandstone (middle jurassic and jurassic? and triassic?) feed chugwater formation or group (triassic) and dinwoody formation (lower triassic) pp park city or phosphoria formation and related rocks (permian) WebNov 20, 2000 · The Gypsum Spring Dinosaur Tracksite was first discovered in 1999 by Walter Parrs Jr., a New York City resident visiting a local ranch.
Geologic units in Sheridan county, Wyoming - USGS
The Gypsum Springs Formation is composed of massive white gypsum in the lower part, and alternating gypsum, red shale, dolomite and limestone. See more The Gypsum Springs Formation is a stratigraphical unit of Middle Jurassic age in the Williston Basin. It takes the name from Gypsum Springs in Wyoming, and was first described in outcrop in … See more The Gypsum Springs Formation reaches a maximum thickness of 76 metres (250 ft) in central Wyoming. It occurs from the Black Hills in South Dakota through Wyoming and into southern Saskatchewan. See more It is equivalent to the upper part of the Watrous Formation and the lower part of the Gravelbourg Formation in Saskatchewan. See more WebThe contact between the Gypsum Spring, Sundance, and Morrison Formations appears to be gradational. The Western Interior sedimentary basin experienced four major … how to write an ethics essay
Ancient River Channel & Sheep Mountain - Geology …
WebMar 1, 2005 · The Gypsum Spring formation ranges in thickness from about 15 to about 35 feet. It is thickest on the hill at the eastern boundary of the Monument. Here the … WebJan 1, 1994 · The Temple Cap Sandstone of southwestern Utah equals the Gypsum Spring Formation and the Gypsum Spring Member of the Twin Creek Limestone of Wyoming and the Nesson Formation of Nordquist in the subsurface of the Williston basin. The Sawtooth and Piper Formations at their type sections in Montana and the lower … WebThe footprints preserved at the Gypsum Spring Tracksite north of Shell are all developed within a four foot thick zone in the middle unit of the formation. They are about 170 million years old and may hold evidence of swimming terrestrial reptiles. The Red Gulch Tracksite is the largest known site in Wyoming and is dated at 167 million years o ring set toolstation