Last edited by Monris
Friday, May 15, 2020 | History

3 edition of Principal facts for gravity stations in the Stillwater complex, Montana found in the catalog.

Principal facts for gravity stations in the Stillwater complex, Montana

Principal facts for gravity stations in the Stillwater complex, Montana

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  • 8 Currently reading

Published by U.S. Dept. of the Interior, Geological Survey in [Denver, Colo.?] .
Written in English

    Subjects:
  • Gravity -- Yellowstone River Watershed

  • Edition Notes

    Statementby Viki Bankey, Tracy McBride, and M. Dean Kleinfopf
    SeriesOpen-file report -- 81-784, Open-file report (Geological Survey (U.S.)) -- 81-784
    ContributionsMcBride, Tracy, Kleinkopf, M. Dean 1926-, Geological Survey (U.S.)
    The Physical Object
    FormatMicroform
    Pagination1 v.
    ID Numbers
    Open LibraryOL13605280M

    at two locations at the Stillwater Mine. The Stillwater Mine, the largest primary pro-ducer of palladium and platinum in the Western hemisphere, is situated in the Stillwater igneous complex in south-central Montana, USA. The Still-water Complex is a km- (mile-) long, layered, stratiform, mafic-to-ultramafic igneous intrusion. The Best and Worst Things from the operators of the local service station and latte stand to the manager of the bank and hospital complex. The world we are preparing our students for becomes more real by involving the community in the school, said Green. Belfry High School, Belfry, Montana Colleen McKee, principal, Stillwater Elementary.

    Mining - Mining - Underground mining: When any ore body lies a considerable distance below the surface, the amount of waste that has to be removed in order to uncover the ore through surface mining becomes prohibitive, and underground techniques must be considered. Counting against underground mining are the costs, which, for each ton of material mined, are much higher underground than on the. Media in category "Stillwater igneous complex" The following 18 files are in this category, out of 18 total. Bronzitic anorthosite (Stillwater Complex, Neoarchean, Ga; mine core dump, Stillwater Mine, Beartooth Mountains, Montana, USA) 1 ().jpg 3, × 1,; MB.

    The Stillwater Complex is one of the world's great layered mafic intrusions, distinguished not so much by its size as by the fact that it is tilted on its side, and erosion has exposed the layering to ready access. This fieldguide presents a summary of the geology of the complex in . Welcome to an Engaged Community There's a better way to personalize your website myConnection, the profile you create allows you to set up a unique starting point for the tasks and transactions that you want to complete in your time on this website.


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Principal facts for gravity stations in the Stillwater complex, Montana Download PDF EPUB FB2

Principal facts for gravity stations of part of the Selway-Bitterroot Wilderness, Idaho and Montana (Open-file report / United States Department of the Interior, Geological Survey) Unknown Binding Author: Michael R Brickey.

Isostatic gravity map and principal facts for gravity stations in Yellowstone National Park and vicinity, Wyoming, Montana, and Idaho: USGS Open-File Report A [S. Carle, J. Glen, et al.] on *FREE* shipping on qualifying offers. Principal facts for gravity stations, Ennis geothermal areas, Montana Open-File Report By: Viki Bankey, M.

Dean Kleinkopf, and Jody Paton. The Stillwater igneous complex of Montana is an intrusion of lopolithic form. The floor and ab feet of layered rocks are exposed on the East Boulder plateau. It is estimated that another 40 per cent of the complex and its roof are hidden beneath a cover of Paleozoic rocks.

The report presents the principal facts for gravity stations compiled for Yellowstone National Park and vicinity. The gravity data were compiled from three sources: Defense Mapping Agency, University of Utah, and U.S.

Geological Survey. The Stillwater igneous complex is a large layered mafic intrusion located in southern Montana in Stillwater, Sweet Grass and Park Counties. The complex is exposed across 30 miles of the north flank of the Beartooth Mountain Range.

The complex has extensive reserves of chromium ore and has a history of Principal facts for gravity stations in the Stillwater complex mined for chromium.

More recent mining activity has produced palladium and other. FROM THE STILLWATER COMPLEX, MONTANA1 Mnr,vrN H.

Bonsow eNo Evrnrrr D. J, LI. Geological Surtey, Menlo Park, Californi,a ABSTRACT Small amounts of very iron-rich chromite are formed as an alteration product of normal cumulus chromite accompanying the alteration of primary silicates to chlorite in the Still-rvater Complex, Size: 1MB.

Geology of the Uppermost Outcrops of the Stillwater Complex in the Boulder River Valley, Montana R.T. Helz and B.R. Lipin U.S. Geological Survey, Reston, VA, e-mail: [email protected] We have examined outcrops of some of the uppermost rocks of the Stillwater Complex that occur in a small area on the west side of the Boulder River Valley.

S, and Al, probably from the Stillwater Complex. Introduction The Stillwater Igneous Complex of southwestern Montana is a large layered mafic intrusion dipping to the north and exposed for about 50 km along an east-west strike.

The basal contact of the igneous complex is well exposed, although no roof contacts have been found. This suggests the involvement of fluids not only in the formation of the Stillwater Complex’s J-M reef but also of analogous deposits worldwide and could provide a new tool for PGE exploration.

High-temperature Carbonates in the Stillwater Complex, Montana, USA. GSA Abstract #SessionBooth 11 H. Aird 1* & A. Boudreau. @article{osti_, title = {Principal facts for a gravity survey of the Double Hot Springs Known Geothermal Resource Area, Humboldt County, Nevada}, author = {Peterson, D L and Kaufmann, H E}, abstractNote = {During Julyforty-nine gravity stations were obtained in the Double Hot Springs Known Geothermal Resource Area and vicinity, northwestern Nevada.

The gravity observations. Get this from a library. Principal facts for 29 gravity stations in the Boulder and Jefferson City quadrangles, Montana. [Jerry H Hassemer; Geological Survey (U.S.)].

IGNEOUS AND TECTONIC STRUCTURES, STILLWATER COMPLEX V roof and an unknown amount of the complex itself before Middle Cambrian time. 4 Two of the authors of this report (Peoples and Rowland) began work on the Stillwater complex in and as part of Prince- ton University's studies in the Beartooth-Bighorn-Yellowstone by: The Stillwater Complex is a famous, billion-year-old, layered ultrabasic-basic intrusion in the Beartooth Mountains of Montana in the United States.

It is 48 km (30 miles) long and has a stratigraphic thickness of 6 km ( miles). It was intruded as a subhorizontal body of magma. Sibanye-Stillwater is a leading international precious metals mining company, with a diverse portfolio of platinum group metal (PGM) and gold operations and projects.

We are the world’s largest primary producer of platinum, the second largest primary producer of palladium and the third largest producer of gold (on a gold-equivalent basis), as.

This Special Publication contains a geological synthesis of the Stillwater Complex and gives detailed directions to, and descriptions of, outstanding exposures. It is intended to provide the opportunity for geologists to learn much about Stillwater Complex geology by self-guided study of outcrops and rock sequences in the field.

Get this from a library. Principal facts for gravity stations in the Wallace 1° x 2° quadrangle, Montana-Idaho. [Viki Bankey; Michael R Brickey; M Dean Kleinkopf; Geological Survey (U.S.)].

@article{osti_, title = {Principal facts for a gravity survey of the Fly Ranch Extension Known Geothermal Resource Area, Pershing County, Nevada}, author = {Peterson, D L and Kaufmann, H E}, abstractNote = {During Julyforty-four gravity stations were obtained in the Fly Ranch Extension Known Geothermal Resource Area and vicinity, northwestern Nevada.

The gravity observations were. STILLWATER COMPLEX ban Banded and upper zones (ab ft maximum)—Cumulates of gabbroic composition—principally interlayered orthopyroxene-plagioclase cumulates (norites and gabbros), orthopyroxene-clinopyroxene-plagioclase cumulates (gabbros), plagioclase cumulates (anorthosites), and olivine-plagioclaseFile Size: 1MB.

Wynn, Jeffrey C., Principal facts for gravity stations and base-station net in the Silver City 1 degree x 2 degrees Quadrangle, Arizona and New Mexico. U.S. Geological Survey, Open-File Reportp., 2 maps. Wynn, J. C., Complete Bouguer gravity anomaly map of the Silver City 1 degree x 2 degrees Quadrangle, New Mexico-Arizona.

Principal Facts for Gravity Stations in the Vicinity of San Bernardino, Southern California Geologic Map Database of the El Mirage Lake Area, San Bernardino and Los Angeles Counties, California Geologic Map of the San Bernardino North ' quadrangle, San Bernardino County, California.The Stillwater Complex is a large fragment of a once-enormous ~ Ma ultramafic–mafic layered intrusion.

It is exposed on the north flank of the Beartooth Mountains in Montana, a large Laramide uplift. Stillwater layering is complex, in contrast to the comparatively simple layering of the Skaergaard Intrusion in Greenland.Petrology of the G and H chromitite zones in the Mountain View area of the Stillwater Complex, Montana.

J. Petrology, 34, Criscenti. L.J., The origin of macrorhythmic units in the Stillwater Complex. M.S. thesis, University of Washington, p.