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3 edition of Petrology, geochemistry, and origin of the Red Mountain ultramafic body near Seldovia, Alaska found in the catalog.

Petrology, geochemistry, and origin of the Red Mountain ultramafic body near Seldovia, Alaska

Petrology, geochemistry, and origin of the Red Mountain ultramafic body near Seldovia, Alaska

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

    Subjects:
  • Petrology -- Alaska -- Seldovia Region.,
  • Rocks, Ultrabasic.

  • Edition Notes

    Statementby Margo I. Toth.
    SeriesOpen-file report -- 81-514., Open-file report (Geological Survey (U.S.)) -- 81-514.
    ContributionsGeological Survey (U.S.)
    The Physical Object
    FormatMicroform
    Pagination1 v.
    ID Numbers
    Open LibraryOL17653612M

    The ultramafic rocks are primarily exposed in the Cordova quadrangle and in a small exposure associated with the Resurrection Peninsula ophiolite. The larger exposure is part of a compositionally and texturally variable unit that consists mainly of medium-grained gabbro, local diabase, hornblende gabbro, peridotite, and orthopyroxenite (Winkler.   Aspects of the magmatism of the Bearpaw Mountains have been summarized by Hearn (a, b) and Macdonald et al. ().The extrusive rocks are mainly latites and minettes. Ultramafic xenoliths are so abundant in the fragmental minette deposits that in some localities they compose up to 50% of the by:

    [4] This paper provides new mineralogic and petrologic data on a collection of ultramafic xenoliths from Shiveluch volcano of the Kamchatka arc. The primary objective of this work is to infer the P‐T‐fO 2 conditions present in the upper mantle beneath Shiveluch volcano, and to constrain the petrological and geochemical processes that have Cited by: petrology, geochemistry, and original tectonic setting of the Galice Formation, Klamath Mountains, Oregon-California; 2) the geochemistry, tectonic setting, and possible regional correlations of the Iron Mountain and Esmeralda Peaks units of the Ingalls ophiolite complex, central Cascades, Washington; 3) the provance and original tectonicCited by: 1.

      Geochemistry of mafic to ultramafic granulites from the Larsemann Hills, east Antarctica Geochemistry of mafic to ultramafic granulites from the Larsemann Hills, east Antarctica Tong, L.; Jahnp, B.-M.; Chen, F.; Liu, X.; Wang, Y. Mafic and ultramafic granulites occur as lenses or boudins within the late Proterozioc (– Ma) .   T1 - Geochemistry and petrology of the Galeras Volcanic Complex, Colombia. AU - Calvache V., Marta Lucia. AU - Williams, Stanley. PY - /5. Y1 - /5. N2 - The Galeras Volcanic Complex (GVC) has erupted lavas and pyroclastic flows, ranging from basaltic andesites to dacites, during the last million by:


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Petrology, geochemistry, and origin of the Red Mountain ultramafic body near Seldovia, Alaska Download PDF EPUB FB2

Get this from a library. Petrology, geochemistry, and origin of the Red Mountain ultramafic body near Seldovia, Alaska. [Margo I Toth; Geological Survey (U.S.)]. Petrology and geochemistry of metamorphosed ultramafic bodies in a portion exposed along a northeast-trending belt from near West Jefferson, North Carolina to near Floyd, Virginia in the Blue Ridge, were investigated.

The mineral assemblages individual body representative of this group, is characterized. Duke Island, with an area of about 60 sq. mi., is situated on the North American Pacific Coast at latitude 55° N.

The ultramafic complex exposed on the island is the southernmost of some thirty distinctive ultramafic bodies of Early Cretaceous age distributed along the mi. length of southeastern Alaska. Petrology of Metamorphosed Chromite-Bearing Ultramafic Rocks from the Red Lodge District, Montana By Patricia J.

Loferski Abstract The chromite deposits near Red Lodge, Mont., occur in small ultramafic lenses that are enclosed in remnants of a metasedimentary-metavolcanic sequence that in turn are sur­ rounded by Archean granitic by: 6.

PETROLOGY OF THE ULTRAMAFIC AND And origin of the Red Mountain ultramafic body near Seldovia ROCKS OF THE BRADY GLACIER NICKEL-COPPER DEPOSIT, FAIRWEATHER RANGE, SOUTHEASTERN ALASKA By GLEN R.

HIMMELBERG* an(j ROBERT A. LONEY ABSTRACT The basal cumulates of the La Perouse layered gabbro, the Brady Glacier cumulates, are the host rocks for the Brady GlacierCited by: 6. Buy PETROLOGY AND GEOCHEMISTRY OF MAFIC AND ULTRAMAFIC ROCKS FROM THE NORTHERN BIGHORN MOUNTAINS, WYOMING on.

geochemistry The garnet pyroxenite bodies on Red Mountain have been used to estimate that parts of the Red Mountain massif crystallized at 6–10 kbar (e.g., Forbes and Swainbank, ; Burns, ) as a cumulate ultramafic sequence. High-temperature deformation fabrics (kink-banded olivine and diopside, undulatory extinction) are interpreted as related to.

Characteristics and Petrogenesis of Alaskan-Type Ultramafic-Mafic Intrusions, Southeastern Alaska By Glen R. Himmelbergl and Robert A. Loney2 ABSTRACT Alaskan-type ultramafic-mafic intrusions occur along a belt that extends from Duke Island to Klukwan in south- eastern Alaska and fall into two age groups to Ma; and to Size: 3MB.

The Spurr volcanic complex (SVC) is a calc-alkaline, medium-K, sequence of andesites erupted over the last years by the eastern-most currently active volcanic center in the Aleutian arc. The ancestral Mt. Spurr was built mostly of andesites of uniform composition (58%–60% SiO2), although andesite production was episodically interrupted by the Cited by: I am familiar with geochemistry since more than 35 years.

Consequently, I certainly know several textbooks in the field. However, when I started to know the William M. White book "Geochemistry" years ago in its e-book format I immediately realized that there is no other equal book in the field/5(29).

Petrology of ultramafic rocks from the ophiolite association in the crystalline basement of the Rhodope Massif Article (PDF Available) in Petrology 7(2) March with Reads. Bourne JH, Bosse J () Geochemistry of ultramafic and calc-alkaline lamprophyres from the Lac Shortt Area, Quebec.

Mineral Petrol 85– Google Scholar Carmichael ISE, Lange RA, Luhr JF () Quaternary minette and associated volcanic rocks of Mascota, western Mexico: a consequence of plate extension above a subduction modified mantle Cited by: Petrogenesis the Ultramafic Complex the Blash ke Islands, Southeastern Alaska By Glen R.

Himmelbergl, Robert A. Loney, and John T. Craig' Abstract The peridotite-gabbro suite at the Blashke Islands is one of more than 30 Alaskan-type ultramafic complexes exposed along a linear trend in southeastern Alaska.

Ultramafic enclaves are common in the Kula lavas (Richardson-Bunbury, ).Richardson-Bunbury () described these enclaves as comparable with lherzolitic mantle material. Gülen () called these igneous enclaves “mantle enclaves”, but without presenting any data.

Holness and Bunbury () presented geochemical data and interpreted them as igneous-related, Cited by: The Windham Bay ultramafic body includes very coarse- to fine-grained sulfide-bearing ultramafic rocks along the shore west of the mouth of the Chuck River for about 3 km.

This body is layered in part, and consists largely of clinopyroxenite with secondary amphibole-rich rock. Locally several-cm-size plates of biotite are present. The Ironside Mountain Batholith The Ironside Mountain batholith is 90 km long and 4 to 13 km wide, and is the largest intmsive body in the Klamath province.

It trends north-northwest, and is locally bounded by the Orleans thmst fauh to the west. Charlton () reported that the Ironside Mountam batholith intmdes the westem. The Rodberget ultramafic-mafic Complex consists of tectonic lenses of mainly ultramafic-mafic rocks dis­ persed over a distance of ca.

20 km along the tectonic boundary between the Koli and Seve units. Many lenses have an entirely ultramafic composition but several (at least six) are composite, displaying two or more rock types. Isotope Geochemistry Lecture Notes.

This lecture note covers the following topics: Radioactive and Radiogenic Isotope Geochemistry, Physical Fundamentals, Geochronology, Radiogenic Isotope Geochemistry, Stable Isotope Geochemistry, Igneous and Hydrothermal Systems, Low Temperature Applications.

EPSL ELSEVIER Earth and Planetary Science Letters () Origin and emplacement of Tertiary ultramafic complexes in northwest Colombia: Evidence from geochemistry and K-Ar, Sm-Nd and Rb-Sr isotopes M.

Tistl a, K.P. Burgath b, A. Hndorf b, H. Kreuzer b, R. Muz `, R. Salinas a Niedstra D Berlin, Germany b Bundesanstalt f Geowissenschaften Cited by: geology, petrology, geochemistry and isotopic character of the indian hill pluton, jacumba mountains, california a thesis presented to the faculty of.

The unmined, pyrite-rich Red Mountain (Dry Creek) deposit displays a remarkable environmental footprint of natural acid generation, high metal and exceedingly high rare earth element (REE) concentrations in surface waters. The volcanogenic massive sulphide deposit exhibits well-constrained examples of acid-generating, metal-leaching, metal-precipitation and self .DOGHEAD POINT ULTRAMAFIC By far the largest ultramafic body is located near Doghead Point on the northern shore of Kluane Lake, opposite of Burwash Landing (Fig.

2). It forms a m-high east-trending ridge and can be traced for 9 km from the north end of an unnamed lake across Talbot Arm to the eastern lakeshore. The ultramafic body.

From measuring geological time, through unravelling the evolution of continents, ocean and mantle, to understanding climate change, modern geochemistry is a discipline which pervades nearly all of the Earth Sciences. Geochemistry provides a broad introduction to the subject, which concentrates on the inorganic chemistry of the condensed part of our planet.5/5(3).