Last edited by Bakus
Thursday, July 23, 2020 | History

2 edition of Petrographic and chemical data on Cretaceous granitic rocks of the Big Delta quadrangle, Alaska found in the catalog.

Petrographic and chemical data on Cretaceous granitic rocks of the Big Delta quadrangle, Alaska

Stephen T. Luthy

Petrographic and chemical data on Cretaceous granitic rocks of the Big Delta quadrangle, Alaska

by Stephen T. Luthy

  • 135 Want to read
  • 21 Currently reading

Published by U.S. Geological Survey in Reston, Va .
Written in English

    Subjects:
  • Rocks -- Analysis -- Alaska -- Big Delta quadrangle.

  • Edition Notes

    Other titlesBig Delta quadrangle, Alaska.
    Statementby Stephen T. Luthy, Helen L. Foster, and Grant W. Cushing.
    SeriesOpen file report / U.S. Dept. of the Interior, Geological Survey -- 81-398, Open-file report (United States. Geological Survey) -- 81-398.
    ContributionsFoster, Helen Laura, 1919-, Cushing, Grant W.
    The Physical Object
    Pagination12 leaves ;
    Number of Pages12
    ID Numbers
    Open LibraryOL22437275M

    D B Clarke has succeeded in filling a niche in petrology of granitoid rocks, and has the rare ability to make the book spring to life. At the price it represents good value for money, and is a recommended purchase for any serious student of geology and any researcher interested in the current status of petrology of granitoid rocks. Cretaceous magmatic rocks of Alaska. Data derived from the map "Latest Cretaceous and Cenozoic magmatic rocks of Alaska" compiled by E.J. Moll-Stalcup, D.A. Brew, and T.L. Vallier, published (at ,, scale) in volume G-1 of "The Geology of Alaska" (GSA) Info.

      Greenschist facies rocks similar to the described units in the Healy quadrangle are present north of the Alaska Range in the Big Delta quadrangle, part of the Yukon-Tanana Upland. These rocks occur in units referred to (from structurally, and possibly also stratigraphically, lowest to highest) as the Fairbanks-Chena assemblage, the Dan Creek.   Geologic map of the Big Delta B-1 quadrangle, east-central Alaska. U.S. Geological Survey Scientific Investigations Map , scale , Map with explanatory text.

    investigated the granitic rocks at Cape Ann and interpreted the geology. The most recent work in the area has been done by Toulmin (), who studied Salem Quadrangle. The geographic name, Cape Ann Granite, was first used by Clapp (), and followed by Toulmin () and Buma et al (). Other workers had termed the Cape Ann, Peabody. PUBLIC DATA FILE GOLD FAVORABILITY IN THE EAGLE QUADRANGLE, ALASKA, AS PREDICTED BY DISCRIMINANT ANALYSIS FOR NON-PORPHYRY GRANITIC ROCKS Rainer J. Newberry University of Alaska-Fairbanks and Laurel E. Burns and Diana N. Solie Division of Geological and Geophysical Surveys April


Share this book
You might also like
Looking where you intend to go

Looking where you intend to go

Goosebumps, Escape from Horrorland

Goosebumps, Escape from Horrorland

Remembered with love

Remembered with love

luxury of children & some other luxuries

luxury of children & some other luxuries

World Photography

World Photography

Employment law

Employment law

The Concise Townscape

The Concise Townscape

The faithful watchman.

The faithful watchman.

Thinking critically

Thinking critically

Collective agreements on time and motion study

Collective agreements on time and motion study

Petrographic and chemical data on Cretaceous granitic rocks of the Big Delta quadrangle, Alaska by Stephen T. Luthy Download PDF EPUB FB2

View and download data in Alaska Geochemistry web map; Maps & Other Oversized Sheets. Plate 1, Map showing granitic rocks of the Big Delta Quadrangle, Alaska ( M) Table 1-Jan, Petrographic data on Cretaceous granitic rocks of the Big Delta Quadrangle, Alaska ( K). Petrographic and chemical data on Cretaceous granitic rocks of the Big Delta quadrangle, Alaska (Open file report / U.S.

Dept. of the Interior, Geological Survey) [Stephen T Luthy] on *FREE* shipping on qualifying offers. Petrographic and chemical data on Cretaceous granitic rocks of the Big Delta Quadrangle, Alaska Open-File Report By: Stephen T.

Luthy, Helen Laura Foster, and Grant W. Cushing. Get this from a library. Petrographic and chemical data on Cretaceous granitic rocks of the Big Delta quadrangle, Alaska. [Stephen T Luthy; Helen Laura Foster; Grant W Cushing]. Petrographic and chemical data on Cretaceous granitic rocks of the Big Delta Quadrangle, Alaska By Stephen T.

Luthy, Helen I. Foster, and Grant W. Gushing Introduction This report presents petrographic and chemical data on granitic rocks of known Cretaceous age and a few of probable Cretaceous age in the Big Delta Quadrangle (plate 1).Cited by: 5.

Buy Petrographic and chemical data on Cretaceous granitic rocks of the Big Delta quadrangle, Alaska (Open file report / U.S. Dept. of the Interior, Geological Survey) by Stephen T Luthy (ISBN:) from Amazon's Book Store. Everyday low prices and free delivery on eligible : Stephen T Luthy.

granitic rocks. This is true for several trace elements, which are critical for the understanding of their chemical mobility in impact melts. Here we present new petrographic and geochemical data for major and trace elements in rocks from the uplift of Araguainha.

These data are combined with previously data published in the literature (Machado. RDF Naibert, T.J., Benowitz, J.A., Wypych, Alicja, Sicard, K.R., and Twelker, Evan,40Ar/39Ar data from the Tanacross D-1 and parts of the D-2, C-1, and.

of the granite border has been recorded by Oftedal (, ), Bugge (, ), Barth (), Taylor and Heier (), Elders () and Smithson (). The granite border of the western section is characterized by an agmatite zone, and the foliation of the country rock is mainly con cordant to the granite border. The agmatite zone is correlation with the whole rock chemical data.

72 thin sections of various rock and mineral samples were prepared for petrographic study. This includes 22 samples of Barotiya rocks, 16 Sewariya granite, 18 medium-grained Govindgarh granite, 11 coarse-grained Govindgarh granite, and 5 tourmaline from quartz-rich veins.

Table 1 0 —Petrographic data on Cretaceous granitic rocks of the Big Delta Quadrangle, Alaska- phenocryst(s), chem = major element chemical analysis, spec = pheno(s) - [The following abbreviations have been used: = apatite, = allanite, ap Mineral abbreviations are: al terati on semiquantitative spectrographic analysis, alter = epidote.

Petrography of Granitoid Rocks-The research area is mainly composed of granitic rocks. The major rock units are biotite granite, hornblende-biotite granodiorite and biotite microgranite.

N Cross-section along A-B A 0 km B Vertical Scale 1”=’ Geological Map of Mudu area and its environs, Yebyu Township, Dawei District. Field geological and petrographic characteristics of granitic rocks of Cherlapally area, Nalgonda district, Telangana, within the eastern Dharwar craton are described in this paper.

Field traverses revealed four types of granitic rocks in the study are viz. Petrographic and chemical data on Cretaceous granitic rocks of the Big Delta Quadrangle, Alaska BY Stephen T.

Luthy, Helen L. Foster, and Grant W. Cushing Introduction This report presents petrographic and chemical data on granitic rocks of known Cretaceous age and a few of probable Cretaceous age in the Big Delta Quadrangle (plate 1).

However, less data for the earliest Early Cretaceous magmatic rocks cropping out in the Comei area have been reported. The earliest Early Cretaceous magmatic rocks from the Kada area comprise mafic rock (diabase) and felsic rocks (granite, dacite, and quartz monzonite). Whole-rock Sr, Nd, and O, feldspar Pb, and zircon U-Pb isotopic compositions, in combination with major- and trace-element and petrographic data, indicate that although these series are not.

Based on new and compiled data, we suggest that the southern Jiaodong Peninsula, as well as the Laoshan area, was in a regional extensional setting of an orogenic belt during – Ma. The granitic rocks may be the result of late Mesozoic lithospheric thinning and decratonization (i.e. late Mesozoic craton destruction event occurring.

reported for Cretaceous to Tertiary granite rocks from east central Alaska (McCoy et al. ; Aleinikoff et al. and overlaps the lower Pb/ Pb v alues of Devonian to. 2. Geological setting. The Eastern Pontides, as a paleo-island arc, is commonly subdivided into Northern and Southern Zones on the basis of structural and lithological differences (Akın,Gedikoğlu,Özsayar et al.,Bektaş et al., ).The Northern Zone is dominated by Late Cretaceous and Middle Eocene volcanic and volcaniclastic rocks, whereas pre-Late Cretaceous rocks.

Cretaceous Period - Cretaceous Period - Types of Cretaceous rocks: The rocks and sediments of the Cretaceous System show considerable variation in their lithologic character and the thickness of their sequences.

Mountain-building episodes accompanied by volcanism and plutonic intrusion took place in the circum-Pacific region and in the area of the present-day Alps.

Highlights Organo-petrography and geochemistry of Cretaceous Calabar Flank, Nigeria. The OM is immature to early-mature of marine and terrigenous types III and IV. Sulphate reduction (SRI > ) of initial OM indicate degradation up to 70%.

Paleoenvironment of deposition is interpreted based on the integration of all data. Amount and quality of OM are specifically controlled by local.Cynthia Dusel-Bacon's 34 research works with citations and 2, reads, including: Detrital zircon geochronology of quartzose metasedimentary rocks from parautochthonous North America, east.Y.

Terakado and S. Nohda, Rb Sr dating of acidic rocks from the middle part of the Inner Zone of southwest Japan: tectonic implications for the migration of the Cretaceous to Paleogene igneous activity, Chemical Geology, /(93)N, (), ().