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Publication Detail
Anomalous Concentrations of Zinc and Copper in Highmoor Peat Bog, Southeast Coast of Lake Baikal
  • Publication Type:
    Journal article
  • Publication Sub Type:
    Article
  • Authors:
    Bobrov VA, Bogush AA, Leonova GA, Krasnobaev VA, Anoshin GN
  • Publisher:
    Pleiades Publishing, Ltd.
  • Publication date:
    14/04/2011
  • Place of publication:
    Russia
  • Pagination:
    1152, 1156
  • Journal:
    Doklady Earth Sciences
  • Volume:
    439
  • Issue:
    2
  • Country:
    Russia
  • Language:
    Russian and English
  • Keywords:
    Peat, Zn and Cu accumulation, Ag accumulation, sphagnum
Abstract
When examining the peat deposit discovered in Vydrinaya bog, South Baikal region, the authors encountered anomalous Zn and Cu concentrations for highmoors being up to 600–500 ppm on a dry matter basis in the Early Holocene beds (360–440 cm) formed 11 000–8500 years ago. It has been demonstrated that Zn and Cu are present inside the plant cells of peat moss in the form of authigenic sulfide minerals of micron size. Apart from Zn and Cu, native Ag particles (5–7 um) have been encountered in the peat of the Vydrinaya bog at a depth of 390–410 cm; these particles formed inside the organic matter of the plasma membrane of peat moss containing Ca, Al, S, and Cu. This study suggests probable patterns of the formation of zinc sul fides, copper sulfides, and native silver in peat moss. The results obtained indicate that biogenic mineral for mation plays a significant role in this system, which is a very important argument in the discussion on the ore genesis, in which physicochemical processes are normally favored, while the role of living matter is quite fre quently disregarded.
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