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Sunday, May 17, 2020 | History

2 edition of Lead isotope studies in Superior and Southern provinces found in the catalog.

Lead isotope studies in Superior and Southern provinces

Lead isotope studies in Superior and Southern provinces

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  • 40 Currently reading

Published by Geological Survey of Canada, Available from Canadian Govt. Pub. Centre in Ottawa, Canada, Hull, Québec, Canada .
Written in English

    Places:
  • Canadian Shield.,
  • Canada.
    • Subjects:
    • Isotope geology -- Canadian Shield.,
    • Isotope geology -- Canada.,
    • Lead -- Isotopes.

    • Edition Notes

      StatementJ.M. Franklin ... [et al].
      SeriesBulletin / Geological Survey of Canada ;, 351, Bulletin (Geological Survey of Canada) ;, 351.
      ContributionsFranklin, J. M.
      Classifications
      LC ClassificationsQE185 .A43 no. 351, QE501.4.N9 .A43 no. 351
      The Physical Object
      Pagination59 p. :
      Number of Pages59
      ID Numbers
      Open LibraryOL3232468M
      ISBN 10066011268X
      LC Control Number83145278

      No hard copy book more than AUD $ (incl. GST) Big discount all books!!! The Ishpeming Greenstone Belt is located just to the south of Lake Superior in northern Michigan, USA and contains the only significant Archaean greenstone hosted gold deposit in the US (in ), the Ropes MIne. Full Text; PDF ( K) PDF-Plus ( K) Citing articles; The Krogh revolution: advances in the measurement of time. Sandra L. Kamo, a Fernando Corfu, b Larry M. Heaman, c Desmond E. Moser d a Jack Satterly Geochronology Laboratory, Department of Geology, University of Toronto, 22 Russell Street, Toronto, ON M5S 3B1, Canada.. b University of Oslo, Department of Geosciences, Postbox Cited by: 1.

      Age and petrogenesis of two late Archean magmatic suites, northwestern Superior Province, Canada: zircon U-Pb and Lu-Hf isotopic relations. Journal of Pertrology Corfu, F. and Stott, G.M. U-Pb geochronology of the central Uchi subprovince, Superior Province. The Sibley Peninsula is an approximately km 2 land mass that projects southwest into Lake Superior, approximately 30km east of Thunder Bay, Ontario, Canada. The geology of the peninsula consists of Southern Province assemblages, including intrusive rocks of the ~ Ga Midcontinent Rift.

      The purpose of this paper is to present a visual model for the development of the Precambrian core of North America (i.e., Laurentia) via a series of time-slice maps (Figs. 1–20) and animations (Animations 1 and 2 1).These visualizations may be useful both for nongeology audiences and for introductory geology teaching as a graphic display of plate tectonic models for continental growth and Cited by: THE PRECAMBRIAN OF THE ROCKY MOUNTAIN REGION By CARL E. HEDGE, ROBERTS. HOUSTON1, OGDEN L. TWETO, ZELLE. PETERMAN, jACK E. HARRISON, and ROLLAND R. REID2 ABSTRACT Precambrian crystalline rocks of the Rocky Mountain region of the United States represent two age provinces. An Archean provinceCited by:


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Lead isotope studies in Superior and Southern provinces Download PDF EPUB FB2

Lead isotope studies in Superior and Southern provinces (Bulletin / Geological Survey of Canada) on *FREE* shipping on qualifying offers. Get this from a library. Lead isotope studies in Superior and Southern provinces.

[J M Franklin;]. Lead Isotope Studies in Superior and Southern Provinces. by Franklin, J. M., S. Roscoe, W. Loveridge and D. Sangster.

and a great selection of related books. Lead isotope studies in Superior and Southern provinces. Geological Survey of Canada, Bulletin 35 1, 60 p.

A lead isotope model based on the Superior Province paleoisochron and possible ages for. Lead isotopes are consistent with a Superior Province provenance and in addition provide evidence for two episodes of regional post-depositional disturbance of the U-Pb system.

Lower Huronian (McKim, Pecors) samples align along Pb/ Pb– Pb/ Pb slopes equivalent to ±58 Ma (MSWD=92, n =9) and ±92 Ma (MSWD=, n =5), by: Lead isotopes are consistent with a Superior Province provenance and in addition provide evidence for two episodes of regional post-depositional disturbance of the U-Pb system.

A total of forty-three galena samples from syngenetic and epigenetic Pb-Zn mineralizations emplaced in the Lower Cretaceous Basque-Cantabrian basin and Paleozoic basement of the Cinco Villas massif in the western Pyrenees, have been analyzed for Pb-isotopic composition. Galena from sedex mineralizations hosted in Carboniferous clastic rocks in the Cinco Villas massif display an homogeneous Cited by: in the Gordon Lake.

Lead isotopes are consistent with a Superior Province provenance and in addition provide evidence for two episodes of regional post-depositional disturbance of the U-Pb system.

Lower Huronian (McKim, Pecors) samples align along PbPb–PbPb slopes equivalent to Ma (MSWD˚92, n˚9) and. These results confirm the observations made above, that ores from the North and South ranges have distinct lead isotope signatures, resembling Sudbury Breccia occurrences within the Superior Province and Huronian Supergroup by: The Berens River subprovince is located in the northwestern portion of the Superior province and is bounded to the north and south by the Sachigo and Uchi subprovinces, by: Over new Nd isotope analyses for the central Grenville Province in the Parent-Clova region of Quebec help fill a major gap in understanding the crustal accretion history of the province.

Lead isotope compositions of galena from the Fox Creek Fault at Manitouwadge, Ontario form an anomalous linear array of values on a standard ²⁰⁷Pb/²⁰⁴Pb vs. ²⁰⁶Pb/²⁰⁴Pb plot and a ²⁰⁸Pb/²⁰⁴Pb vs. ²⁰⁶Pb/²⁰⁴Pb plot.

The last geologically reasonable time for galena mineralization along the Fox Creek Fault is during the Keweenawan age, million years ago. New whole-rock lead (Pb) isotope analyses are presented in this study for granitoid orthogneisses from the Southwest Grenville Province in Ontario and Western Quebec.

These data are used to test the location of a cryptic Archean-Proterozoic suture proposed on the basis of neodymium (Nd) isotope mapping. Immediately south of the inferred suture boundary, Pb isotope results show a crustal Author: Gabriel A. Arcuri, Alan P. Dickin.

Residues after HF leaching of detrital feldspar grains from the Early Proterozoic Chelmsford Formation of the Sudbury Basin, Ontario record isotopic compositions very close to the initial Pb isotopic composition of their Late Archean, Superior Province source.

These grains have been recrystallized to albite and by: Carbon and sulfur isotope ratios have been determined for more than samples of Precambrian graphitic and sulfidic metasediments from the Superior and Churchill Provinces of Canada. The sediments were deposited in small sedimentary basins related to various Canadian greenstone by: Evidence from lead isotopes regarding the genesis of ore deposits in the Chibougamau region, Quebec Article in Canadian Journal of Earth Sciences 18(4) February with 7 Reads.

Chadwick B, Vasudev VN, Hegde GV () The Dharwar craton, southern India, interpreted as the result of late Archean oblique convergence.

Precamb Res 91– CrossRef Google Scholar Chatterjee N, Bhattacharji S () Petrology, geochemistry and tectonic settings of the mafic dikes and sills associated with the evolution of the Cited by: A mix of 60–70% of Superior Province gneisses with 30–40% of Huronian metasedimentary material closely matches the Pb isotope compositions of North Range Offset Dyke samples, whereas in the.

Corfu, F. & Noble, S. Genesis of southern Abitibi greenstone belt, Superior Province, Canada: Evidence from zircon Hf isotope analyses using Cited by: The lead isotope composition of ore minerals from precious metal-bearing polymetallic vein systems in the Cobalt Embayment, Northern Ontario.

Metallogenetic implications. Economic Geology and the Bulletin of the Society of Economic Geologists (6): Crossref, Google by: 1. The University of Chicago Press. Books Division. Chicago Distribution Center.‘04Pb vs.

zo6Pb/Pb. and are within the field of Superior Province compositions. Lead isotope systematics indicate that the Chelmsford Formation was predominantly derived from Superior Province rocks without undergoing any perceptible change in whole-rock U/Pb or Th/Pb.

or disturbance of original Archean Pb in the feldspar. Indirect derivation of the feldspar.CiteScore: ℹ CiteScore: CiteScore measures the average citations received per document published in this title.

CiteScore values are based on citation counts in a given year (e.g. ) to documents published in three previous calendar years (e.g. – 14), divided by the number of documents in these three previous years (e.g. – 14).