Last edited by Bara
Saturday, October 10, 2020 | History

2 edition of Geology of Precambrian rocks, Idaho Springs district, Colorado found in the catalog.

Geology of Precambrian rocks, Idaho Springs district, Colorado

Robert Hadley Moench

Geology of Precambrian rocks, Idaho Springs district, Colorado

by Robert Hadley Moench

  • 276 Want to read
  • 39 Currently reading

Published by U.S. Government Printing Office in Washington, DC .
Written in English

    Subjects:
  • Geology -- Colorado -- Idaho Springs Region.,
  • Geology, Stratigraphic -- Precambrian.

  • Edition Notes

    Statementby Robert H. Moench.
    SeriesU.S. Geological Survey bulletin -- 1182-A, Contributions to economic geology
    ContributionsGeological Survey (U.S.), U.S. Atomic Energy Commission.
    The Physical Object
    Paginationiv, 70 p. :
    Number of Pages70
    ID Numbers
    Open LibraryOL20584032M

    Mount Princeton, in the Sawatch Range, is about 85 miles west of Colorado Springs. A body of magma which formed in the region of Mount Princeton million years ago suddenly found a weak area in the surface rocks and explosively broke through. Howard, K.A., , Geologic map of the Sheep Hole Mountains 30' x 60' quadrangle, San Bernardino and Riverside Counties, California: U.S. Geological Survey.

    Additional Physical Format: Online version: Harrison, Jack Edward, Joints in Precambrian rocks, Central City-Idaho Springs Area, Colorado. Washington, D.C.: U.S.   Those were soon followed by the San Juan Dome and the Rocky Mountains. By the Early Tertiary, the San Juan Mountains w feet higher than the San Juan and Paradox Basins on the south and west, also products of the orogeny, and erosion had exposed Precambrian rocks in the peaks. As the land rose, of course, the sea retreated.

    Colorado occurs on four geologic units: (1) the Front Range, (2) the Sangre de Cristo Mountains, (3) the Spanish Peaks, and (4) the Wet Moun-tains. Each is described in this Paper. Detailed studies of Montane Zone resources are being conducted at the Manitou Experimental Forest, west of Colorado Springs. Geologic features. Garden of the Gods and Pikes Peak, Colorado Springs The red Lyons Formation sandstone layers were uplifted vertically when the Rocky Mountains were uplifted. foot Pikes Peak in the background is a lone Precambrian granite intrusion.


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Geology of Precambrian rocks, Idaho Springs district, Colorado by Robert Hadley Moench Download PDF EPUB FB2

Geology of Precambrian rocks, Idaho Springs district, Colorado (Contributions to economic geology) [Moench, Robert Hadley] on *FREE* shipping on qualifying offers. Geology of Precambrian rocks, Idaho Idaho Springs district district, Colorado (Contributions to economic geology).

OCLC Number: Notes: This volume was printed as separate chapters A-E in Contributions to general geology One folded map in pocket, Plate 1: Geologic map of the Idaho Springs District, Colorado. PRECAMBRIAN ROCKS, IDAHO SPRINGS DISTRICT, COLORADO A29 The rock is dark gray to black, fine grained, and has a conspicuous gneissic structure.

The layers it forms are conformable and generally less than 10 feet thick. One layer was traced a distance of about 1, feet from U.S. Highway 6 and 40 eastward to the Idaho Springs by: 6. Geology of Precambrian Rocks, Idaho Springs District, Colorado.

Geology of northwestern North Park, Colorado. The metamorphic rocks are sometimes called the Idaho Springs. on Precambrian metamorphic rocks. The next chapter in the Boulder geology book after. [Robert Moench] on H.Geology of Precambrian rocks, Central City. General Information. Title: Geology of Precambrian rocks, Idaho Springs district, Colorado Author(s): Moench, R.H.

Publishing Organization: U.S. Geological Survey Series and Number: Bulletin A Geology of Precambrian rocks Work: Contributions to general geology, Publication Date: Map Scale:Cross Section: Yes North Latitude: 39° 46' 34" N (). Buy GEOLOGY OF PRECAMBRIAN ROCKS, IDAHO SPRINGS DISTRICT, COLORADO.

by Robert. Moench (ISBN:) from Amazon's Book Store. Everyday low prices and free delivery on eligible : Robert. Moench. The Precambrian rocks of central Colorado consist principally of a thick series of high-grade schists and gneisses (Idaho Springs formation) intruded by a succession of granite (Pikes Peak?) and closely related Frc.

Plan of lorver adit (elev=) Cotopaxi Mine, Colorado. Geology of Precambrian rocks, Central City district, Colorado,Professional Paper C Regional geology of the Steamboat Springs area, Washoe County, Nevada,Professional Paper A.

13, geologic time scale (inside front cover). Idaho Springs Formation. Sample from a foliated, medium-grained, microcline-quartz-biotite-plagioclase gneiss, in roadcut along Golden Gate Canyon Road, in sec.

19, T. 3 S., R. 70 W., Ralston Butte quadrangle, Jefferson County, Colorado, yielded a fission-track age of +/ Ma (apatite); represents cooling-age, indicates time of uplift in.

Except for a rather small area in northwestern Colorado, which is underlain by buried Archean rocks ( Ga and older) of the Wyoming province and local, overlying craton-margin rocks (~ Ga) (Houston and others, ), the basement rocks of Colorado are Proterozoic in age, mainly Paleoproterozoic ( Ga), but also Mesoroterozoic ( Similar Items.

Precambrian crystalline basement map of Idaho, an interpretation of aeromagnetic anomalies by: Sims, P. Published: () ; Precambrian basement structure map of the continental United States, an interpretation of geologic and aeromagnetic data / by: Sims, P. Published: (). Several events happened in the Precambrian Era to create the rock formations seen in Rocky Mountain National Park.

The oldest rocks in Rocky Mountain National Park come from the Precambrian Era and date back billion years. The parent rocks include sedimentary shale, sandstone interbedded with volcanic granites. Geology of Precambrian rocks, Idaho Springs district, Colorado by: Moench, Robert Hadley, Published: () The Precambrian.

Published: () A Correlation of the Precambrian rocks in the British Isles / Published: (). The Hall Valley area, in northwestern Park County, Colorado, contains foliated high-grade Precambrian metamorphic rocks resulting from recrystallization of a complexly folded and faulted clastic sedimentary sequence containing two series of strata separated by an angular unconformity of regional extent.

#d tweto o. nomenclature of precambrian rocks in colorado 8vo, wps, vg, 22 pp., 1 fig. price: $ (stock#usgsbd) # geology and mineral resources of the needle mountains district colorado. Similar Items. A preliminary report on the geology and gold deposits of the Rochford District, Black Hills, South Dakota / by: Bayley, Richard W.

Published: () Geology of Precambrian rocks, Idaho Springs district, Colorado / by: Moench, Robert Hadley, Published: (). Discover information about Idaho geology, oil & gas, mines, geothermal areas, geochemistry and more. Mines & Minerals.

Mining is an important part of Idaho's economy. Each year IGS posts a review of mining and exploration throughout the state. Idaho Geologic Map.

Our most popular item. View as PDF, or access GIS data and web services. B Geology of the Tarryall District, Park County, Colorado. Descriptions of tungsten (scheelite-powellite) skarns, copper-tungsten (scheelite) skarns, and copper-zinc skarns, which represent the three main types of deposits occurring in metamorphic rocks in south-central Colorado.

pages. 18 figures. 10 tables. Digital PDF download. RSD From the Abstract: Three intergrading types of mineralized skarn deposits occur in the Precambrian metamorphic.

The country rock includes metasediments of the Idaho Springs formation of Precambrian age. The pitchblende deposits are associated principally with two well-foliated rock types, hornblende gneiss and quartz-biotite gneiss and with granite pegmatite. i a / gravel & crushed rock sources in the colorado springs - castle rock area, colorado, $ 10 i b / land-use classification map of the colorado springs - castle rock area, front range urban corridor, colorado, $ 10 i f / geologic map of the colorado springs - castle rock area, colorado.The distribution of molybdenite, fluorite, rhodochrosite, enargite, and telluride minerals, together with anomalous quantities of Cu, Pb, Zn, and Mo in rocks, and variations in stable isotope ratios define a complex, zoned hydrothermal system in the Central City mining district.Stratigraphy, Tectonics & Geologic History.

In the early Proterozoic, between and billion years ago, the continental crust of Colorado was assembled from several older island arcs, along the coast of the Archean Wyoming Colorado Province took shape as a mobile belt—an area of thinner, orogeny related continental crust lacking the deep "keel" of rock, which stabilized the.