Loading...
Please wait, while we are loading the content...
Similar Documents
Development of the earth's early crust: implications from the beartooth mountains
| Content Provider | NASA Technical Reports Server (NTRS) |
|---|---|
| Author | Mueller, P. A. Henry, D. J. Mogk, D. W. Wooden, J. L. |
| Copyright Year | 1983 |
| Description | The Beartooth Mountains of Montana and Wyoming are one of several major uplifts of Precambrian rocks in the northwestern of the Wyoming Province. The range is composed of a wide variety of rock types which record a complex geologic history that extends from early ( 3400 Ma) to late (approx 700 Ma) Precambrian time. The Archean geology of the range is complex and many areas remain unstudied in detail. In this discussion two areas are discussed for which there is considerable structural, geochemical and petrologic information. The easternmost portion of the range (EBT) and the northwesternmost portion, the North Snowy Block (NSB), contain rather extensive records of both early and late Archean geologic activity. These data are used to constrain a petrologic tectonic model for the development of continental crust in this area. |
| File Size | 1626704 |
| Page Count | 5 |
| File Format | |
| Alternate Webpage(s) | http://archive.org/details/NASA_NTRS_Archive_19840012891 |
| Archival Resource Key | ark:/13960/t77t2j27t |
| Language | English |
| Publisher Date | 1983-01-01 |
| Access Restriction | Open |
| Subject Keyword | Geophysics Geology Earth Crust Terrain Crystallization Volcanology Rocks Stratigraphy Sediments Tectonics Ntrs Nasa Technical Reports Server (ntrs) Nasa Technical Reports Server Aerodynamics Aircraft Aerospace Engineering Aerospace Aeronautic Space Science |
| Content Type | Text |
| Resource Type | Article |
