Oceanology

, Volume 54, Issue 4, pp 465–477

Environmental evolution of the southern Chukchi Sea in the Holocene

  • E. A. Gusev
  • N. Yu. Anikina
  • L. G. Derevyanko
  • T. S. Klyuvitkina
  • L. V. Polyak
  • E. I. Polyakova
  • P. V. Rekant
  • A. Yu. Stepanova
Marine Geology

DOI: 10.1134/S0001437014030011

Cite this article as:
Gusev, E.A., Anikina, N.Y., Derevyanko, L.G. et al. Oceanology (2014) 54: 465. doi:10.1134/S0001437014030011

Abstract

The molluscan shells from three drill and two piston cores obtained in the southern Russian sector of the Chukchi Sea are dated by the AMS 14C measurement method back to 0.8–3.5 and 9.2–10.5 ka. The period of 9–10 ka was marked by increased sedimentation rates related to the transgression onset. The fossils in the lower Holocene section exhibit the successive upward replacement of brackish-water organisms by their marine counterparts. After the opening of the Bering Strait in the middle Holocene, the sedimentation was under influence of the increased bioproductivity of the waters. The climatic optimum in the Chukotka region corresponds to the early Holocene, while the late Holocene was characterized by the wider development of the ice cover on the shelf.

Copyright information

© Pleiades Publishing, Inc. 2014

Authors and Affiliations

  • E. A. Gusev
    • 1
  • N. Yu. Anikina
    • 2
  • L. G. Derevyanko
    • 2
  • T. S. Klyuvitkina
    • 3
  • L. V. Polyak
    • 4
  • E. I. Polyakova
    • 3
  • P. V. Rekant
    • 1
  • A. Yu. Stepanova
    • 5
  1. 1.All-Russian Research Institute of Geology and Mineral Resources of the World Ocean (VNIIOkeangeologiya)St. PetersburgRussia
  2. 2.Central Geological-Prospecting LaboratorySyktyvkarRussia
  3. 3.Geographical DepartmentMoscow State UniversityMoscowRussia
  4. 4.University of OhioOhioUSA
  5. 5.Paleontological InstituteRussian Academy of SciencesMoscowRussia