Doklady Earth Sciences

, Volume 476, Issue 1, pp 1099–1104 | Cite as

Geochemistry of obsidian from Krasnoe Lake on the Chukchi Peninsula (Northeastern Siberia)

  • V. K. Popov
  • A. V. Grebennikov
  • Ya. V. Kuzmin
  • M. D. Glascock
  • E. A. Nozdrachev
  • S. Yu. Budnitsky
  • I. E. Vorobey
Geochemistry
  • 27 Downloads

Abstract

This report considers features of the geochemical composition of obsidian from beach sediments of Krasnoe Lake along the lower course of the Anadyr River, as well as from lava–pyroclastic rocks constituting the lake coastal outcrops and the surrounding branches of Rarytkin Ridge. The two geochemical types of obsidian, for the first time distinguished and researched, correspond in their chemical composition to lavas and ignimbrite-like tuffs of rhyolites from the Rarytkin area. The distinguished types represent the final stage of acidic volcanism in the West Kamchatkan–Koryak volcanic belt. It was assumed that the accumulation of obsidian in coastal pebble beds was caused by the erosion of extrusive domes and pyroclastic flows. The geochemical studies of obsidian artifacts from archeological sites of the regions of the Sea of Okhotsk, the Kolyma River, and the Chukchi Peninsula along with the correlation of geological and archeological samples show that Krasnoe Lake was an important source of “archeological” obsidian in Northeastern Siberia.

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Copyright information

© Pleiades Publishing, Ltd. 2017

Authors and Affiliations

  • V. K. Popov
    • 1
  • A. V. Grebennikov
    • 1
    • 2
  • Ya. V. Kuzmin
    • 3
    • 4
  • M. D. Glascock
    • 5
  • E. A. Nozdrachev
    • 1
  • S. Yu. Budnitsky
    • 1
  • I. E. Vorobey
    • 6
  1. 1.Far Eastern Geological Institute, Far East BranchRussian Academy of SciencesVladivostokRussia
  2. 2.Far Eastern Federal UniversityVladivostokRussia
  3. 3.Sobolev Institute of Geology and Mineralogy, Siberian BranchRussian Academy of SciencesNovosibirskRussia
  4. 4.Tomsk State UniversityTomskRussia
  5. 5.University of Missouri Research ReactorColumbiaUSA
  6. 6.Magadan Regional Museum of Local LoreMagadanRussia

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