WebChugwater Formation (North Wyoming) - Red siltstone and shale. Alcova Limestone Member in upper middle part in north Wyoming. Thin gypsum partings near base in north and northeast Wyoming. Goose Egg Formation - Red sandstone and siltstone, white gypsum, halite, and purple to white dolomite and limestone. WebThe red sediments of the Chugwater could: (1) be tropical soils, (2) have come from tropical hematite-rich soils eroded and then deposited in rivers, lakes and the sea, and/or (3) precipitated from the acid, saline lake …
Chugwater Formation or Group (WYTRc;0) - USGS
WebThe Chugwater consists of shale and siltstone in the lower and middle intervals, and becomes more sandy in the upper intervals. Total Chugwater thickness is about 1,000 feet. Depositional environment for the Chugwater is believed to be shallow marine. The Chugwater Formation is a mapped bedrock unit consisting primarily of red sandstone, in the states of Wyoming, Montana, and Colorado in the United States. It is recognized as a geologic formation in Colorado and Montana, but as a Group (set of formations) in Wyoming. Due to its lack of fossils … See more The most noticeable feature on a large scale is the brick-red color, caused by oxidation of iron minerals in the rock. This color is periodically interrupted by streaks and spots of reduced iron, a light bluish-gray shade. Near … See more Relative age dating of the Chugwater places it in the Triassic Period. See more hilft cortison bei ischias
Chugwater and Goose Egg Formations (WYTRPcg;0) Natural Atlas
WebApr 10, 2024 · The Popo Agie Formation is a Triassic geologic formation that crops out in western Wyoming, western Colorado, and Utah.It was deposited during the Late Triassic in fluvial (river) and lacustrine (lake) environments that existed across much of what is now the American southwest. Fragmentary fossils of prehistoric reptiles and amphibians, … WebJan 19, 2007 · Chugwater Formation: 1,000-1,500: Siltstone and shale, red, thin-bedded; one thin marine limestone in upper third. ... These strata have yielded far more oil and gas than any other geologic system in the State and the production is geographically widespread. They also contain enormous coal reserves, some in beds between 50 and … Webpreliminary geologic map of the greeley 1° x 2° quadrangle, colorado and wyoming william a. braddock james c. cole open-file report 78-532 ... formation, chugwater formation, forelle limestone, and lyons sandstone and satanka formation (where present), combined, north of about 40°45' hilft granufink prosta wirklich