Structure of Spring Mountain Mesozoic formations, Fremont County, Wyoming
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Structure of Spring Mountain Mesozoic formations, Fremont County, Wyoming

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Published .
Written in English


  • Geology, Structural -- Wyoming -- Fremont County,
  • Geology, Stratigraphic -- Mesozoic

Book details:

Edition Notes

Statementby William Joseph Thompson
The Physical Object
Pagination27 leaves :
Number of Pages27
ID Numbers
Open LibraryOL14984345M

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Precambrian banded-iron formation from Fremont County, Wyoming: Fig. Prokaryotes and Eukaryotes: Fig. Stromatolites, fossils of cyanobacteria "algae" mats, occur in rocks dating back to early Precambrian time. Fig. The Laramide mountain building event ( million years ago) thrust up major Precambrian arches, exposing Paleozoic and Mesozoic rocks that are the source of the chert and quartzite used for tools. The orographic effect of these uplifts in conjunction with the latitude of the North American tectonic plate controlled the climate of the region. Type log of Greybull Sandstone Member of the upper part of the Cloverly Formation, same color scheme as previous cross section. Modified after Minielly, G.P., , Surface and Subsurface Study of the Greybull Sandstone, an Incised Valley Fill, and the Sykes Mountain Formation, Bighorn Basin, Wyoming: Fig. , p. 7.   Wyoming is full of strange and wonderful sights. The unique rock formations scattered around the state are just one example. It’s true we have some pretty amazing mountain ranges, but some of our smaller natural stone creations are so peculiar, they rival even the Grand Tetons as attractions in their own right.

Fremont County, Wyoming covers an area of approximately 9, square miles with a geographic center of °(N), °(W). These are the far north, south, east, and west coordinates of Fremont County, Wyoming, comprising a rectangle that encapsulates it. “ The rock formations are wonderful to look at and you can climb to the top of the Bridge over the water. “ She was so right!! Located only 5 miles off of I, it doesn’t take . WY: NW on Sheep Mountain Rd E of Oil Gulch on Rt Jurassic: W Part of Beaver Divide km S of Sand Draw Oil Fields in Fremont County,WY,near Wagon Bed Spring s34T32NR95W: mammals and mollusks: WY Only Bold Mountain that USGS knows about it in Fremont County,WY at N,W. CAUTION:Collecting vertebrate material in. County, Wyoming. 2. Columnar sections of the Sundance and older formations, Newcastle area, Weston County, Wyoming. 3. Columnar sections of the Fall River, Lakota, and Morrison Forma­ tions, Newcastle area, Weston County, Wyoming. Page FIGURE 1. Index map showing location of Newcastle area and adjacent.

In southern Yellowstone and Jackson Hole areas the presence of Morrison is questionable. Sundance Formation (Js) - Greenish-gray glauconitic sandstone and shale, underlain by red and gray nonglauconitic sandstone and shale. Gypsum Spring Formation - Interbedded red shale, dolomite, and gypsum. In north Wyoming wedges out south in T. 39 N. Collecting rocks in Wyoming is pure heaven. Due to the lack of population most of the rock collecting sights are not very picked over. Rock hunting is fairly easy as most ancient gravel bars have jasper and agate and various other lapidary materials. Most of the agate and jasper found on the market from locations worldwide can be found in wyoming. The Dubois Museum, at Ramshorn St. in Dubois, Wyo. collects, preserves and interprets artifacts, geologic and other materials from the Precambrian Era through the end of the timber industry in the collection focuses on the Upper Wind River Valley, Fremont County and Western Wyoming and the Rocky Mountain Region. From December through May, the museum is open from 10 a.m. to . @article{osti_, title = {Early Mesozoic history and petroleum potential of formations in Wyoming and northern Utah}, author = {Picard, M D}, abstractNote = {During the Triassic and Jurassic, over what is now Wyoming and northern Utah, roughly equal amounts of sediment were being deposited in continental settings-lake, stream, and eolian-and in shallow-marine or deltaic-plain settings.