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2 edition of geology of the metamorphosed Biwabik iron-formation, eastern Mesabi district, Minnesota. found in the catalog.

geology of the metamorphosed Biwabik iron-formation, eastern Mesabi district, Minnesota.

James Ronald Novotny Gundersen

geology of the metamorphosed Biwabik iron-formation, eastern Mesabi district, Minnesota.

by James Ronald Novotny Gundersen

  • 37 Want to read
  • 21 Currently reading

Published by University of Minnesota Press in Minneapolis .
Written in English

    Places:
  • Minnesota,
  • Mesabi Range.
    • Subjects:
    • Geology -- Minnesota -- Mesabi Range.,
    • Taconite.,
    • Geology, Stratigraphic -- Precambrian.

    • Edition Notes

      Bibliography: p. 136.

      Other titlesBiwabik iron-formation.
      SeriesMinnesota Geological Survey. Bulletin, 43, Bulletin (Minnesota Geological Survey) ;, 43.
      ContributionsSchwartz, George M. 1892- joint author.
      Classifications
      LC ClassificationsQE127 .A22 no. 43
      The Physical Object
      Pagination139 p.
      Number of Pages139
      ID Numbers
      Open LibraryOL221411M
      LC Control Numbera 62009302
      OCLC/WorldCa552859

      Biwabik Iron Formation, LTV mine, Minnesota Biwabik Iron Formation at the LTV Mine. The iron mines below have been inactive for at least 3 years at the time of the photos. This rock made from metamorphosed sand is at the bottom of the iron . The geology of the metamorphosed Biwabik iron-formation, Eastern Mesabi District, Minnesota. Minnesota Geological Survey Recognition of ancient shallow marine environments. In .

      Having described the metamorphic characteristics of the Iromwood Formation, it is possible to make com­ parisons between the Ironwood metamorphism and analogous zones of metamorphism in the Biwabik Formation. The Middle Precambrian Animikie Group of the Mesabi Range has been metamorphosed on its eastern end by the. Full text of "The Mesabi iron-bearing district of Minnesota" See other formats.

      The Mesabi Iron Range's weathered zone iron ores are essentially mined out. Modern iron mines target the lower-grade taconite as iron ore. Stratigraphy: weathered zone in the Biwabik Iron-Formation, Paleoproterozoic, ~ Ga Locality: Whiteside Mine at the town of Buhl, Mesabi Iron Range, western St. Louis County, northeastern Minnesota, USA Date. The Mesabi Range iron province is located approximately 80 km to the north-west, and parallel to the northern shore of Lake Superior in northern Minnesota, USA. Current and past mines include: Hibbing Taconite, Northshore, United Taconite, Biwabik, Hull-Rust-Mahoning and Mount Iron. The district has produced Gt of iron ore from mines since , of which Gt was .


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Geology of the metamorphosed Biwabik iron-formation, eastern Mesabi district, Minnesota by James Ronald Novotny Gundersen Download PDF EPUB FB2

Get this from a library. The geology of the metamorphosed Biwabik iron-formation, eastern Mesabi district, Minnesota. [James Ronald Novotny Gundersen; George M Schwartz]. J.N. Gundersen, G.M. SchwartzThe geology of the metamorphosed Biwabik iron-formation, eastern Mesabi district, Minnesota Minnesota Geological Survey Bulletin, 43 Cited by: Find many great new & used options and get the best deals for The Geology of the Metamorphosed Biwabik Iron Formation, Eastern Mesabi District, Minnesota by James Novotny Gundersen and George Melvin Schwartz (, Paperback) at the best online prices at eBay.

Free shipping for many Minnesota. book. The Geology of the Metamorphosed Biwabik Iron-Formation, Eastern Mesabi District, Minnesota large-scale mining and milling of taconite during the past decade has emphasized the importance of all aspects of the geology of the Eastern Mesabi district.

It had been known from the earliest explorations in the Mesabi district that the eastern Cited by: 9. The eastern Mesabi district of Minnesota is economically important because of the current large scale utilization of the magnetite-bearing Biwabik Fe-formation as a source of Fe ore.

The Animikie group of sediments, consisting of the Pokegama, Biwabik, and Virginia formations, were deposited successively over the Giants Range by: 3. The Dunka River area is at the eastern end of Minnesota's Mesabi range where the Middle Precambrian Biwabik Iron Formation lies unconformably on Early Precambrian granitic rocks and is overlain conformably by the Middle Precambrian Virginia by: The Biwabik Iron Formation is a??.

billion year-old sequence of iron-rich sedimentary rocks that was metamorphosed at its eastern-most extent by??. billion year-old intrusions of the Duluth Complex. eastern Mesabi district The metamorphic recrystallization of iron-formation locally produced iron-rich amphiboles and other fibrous iron-silicate minerals.

The presence of these minerals in iron. MS Book and Mineral Company Minnesota II Catalog - State and Miscellaneous Publications J.

/ THE GEOLOGY OF THE METAMORPHOSED BIWABIK IRON-FORMATION, EASTERN MESABI DISTRICT, MINNESOTA, Minneapolis,cl, pages, 5 tables, 1 plate, 41 figs., - 2 - $ 20; another used copy, $ 10 Ed. / GEOLOGY OF MINNESOTA: A CENTENNIAL.

The earliest taconite plants were established in the Eastern Mesabi district, in areas in which the Biwabik Iron-formation was metamorphosed by the Duluth Gabbro Complex; most of the recent plants are in the Main and Western Mesabi districts, in areas of "unaltered" by: the gene al objectives for which the Lake Superior Geology stitute was or-g nized, that is, to present preliminary results of investigation in new areas of geologic interest, the leaders of this trip plan t o show you their approach tp subdivicng the Biwabik iron formation beyond the basic fourfold subdivisionFile Size: 2MB.

J.N. Gundersen, G.M. SchwartzThe geology of the metamorphosed Biwabik Iron-Formation, Eastern Mesabi district, Minnesota Minnesota Geological Survey Bulletin, 43 Cited by: #43 Gunderson J. and Schwartz G. THE GEOLOGY OF THE METAMORPHOSED BIWABIK IRON FORMATION EASTERN MESABI DISTRICT MINNESOTA 8vo, red cloth as issued, ex-lib else vg copy, pp., 41 figs, map in pocket.

Price: $ (stock#MNGSB43). The Geology of the Metamorphosed Biwabik Iron-Formation, Eastern Mesabi District, MinnesotaSplettstoesser, John F.; Sloan, Sally A., Bulletin No. 34 Supplement. Bibliography of Minnesota Geology. The Animikie Group is a geologic group composed of sedimentary and metasedimentary rock, having been originally deposited between 2, and 1, million years ago during the Paleoproterozoic era, within the Animikie group of formations is geographically divided into the Gunflint Range, the Mesabi and Vermilion ranges, and the Cuyuna the.

The Biwabik Iron Formation is a billion year old banded iron formation (Schultz and Cannon, ). It is the middle member the Animikie Group located in northeastern Minnesota.

The Biwabik Iron Formation is bounded by the Virginia Formation above and the Pokegama Quartzite below. The Animikie Group was depositedFile Size: 3MB.

The geology of the metamorphosed Biwabik iron-formation, eastern Mesabi district, Minnesota: Minnesota Geological Survey Bulle p. The nature of primary and secondary mineralization in porphyry copper deposits, in Geology of the porphyry copper deposits, southwestern North America: University of Arizona Press, p.

GEOLOGY OF THE BIWABIK IRON FORMATION, DUNKA RIVER AREA, MINNESOTA. by Bill Bonnichsen (Author) See all formats and editions Hide other formats and editions.

Price New from Used from Pamphlet "Please retry" — — $ Author: Bill Bonnichsen. GEOLOGY AND STABLE ISOTOPE GEOCHEMISTRY OF THE BIWABIK IRON FORMATION, NORTHERN MINNESOTA Paperback – January 1, by et al Perry, E.C. (Author) See all formats and editions Hide other formats and editions.

Price New from Used from Pamphlet Author: et al Perry, E.C. The Biwabik Iron Formation of Minnesota ( Ga) underwent contact metamorphism by intrusion of the Duluth Complex ( Ga). Apparent quartz–magnetite oxygen isotope temperatures decrease from ∼°C at the contact to ∼°C at km distance (normal to the contact in 3D).

Metamorphic pigeonite at the contact, however, indicates that peak Cited by: Issue 55 - 5 / Ore Deposits and sedimentary features, Jefferson City Mine, Tennessee; Stratigraphy of the Eastern Mesabi District, Minnesota, $ 10 Issue 55 - 6 / The Chief Oxide-Burgin Area discoveries, East Tintic District, Utah: A Case History; Intrusion and ore deposition in.

Structure and lithology of the metamorphosed Biwabik Iron-formation, Dunka River area, Eastern Mesabi district, Minnesota•••Bil1 Bonnichsen Structural control of .The mineralogy of the Biwabik Iron Formation changes dramatically from west to east as the formation nears the basal contact of the Duluth Complex.

This reflects a contact metamorphism that took place with the emplacement of the igneous Duluth Complex at temperatures as high as degrees by: Geology and sedimentology of the Paleoproterozoic Animikie Group: The Pokegama Formation, the Biwabik Iron Formation, and Virginia Formation of the eastern Mesabi Iron Range and Thomson Formation.