Geochronometria

, Volume 38, Issue 1, pp 72–76

230Th/U chronology of ore formation within the semyenov hydrothermal district (13°31′ N) at the Mid-Atlantic ridge

Authors

    • St. Petersburg State University
  • F. Maksimov
    • St. Petersburg State University
  • A. Zheleznov
    • St. Petersburg State University
  • G. Cherkashov
    • Institute for Geology and Mineral Resources of the Ocean (VNIIOkeangeologia)
  • V. Bel’Tenev
    • Polar Marine Geosurvey Expedition
  • L. Lazareva
    • Polar Marine Geosurvey Expedition
Article

DOI: 10.2478/s13386-011-0001-1

Cite this article as:
Kuznetsov, V., Maksimov, F., Zheleznov, A. et al. Geochron (2011) 38: 72. doi:10.2478/s13386-011-0001-1

Abstract

A radiochemical study was carried out on massive sulfides from Semyenov hydrothermal district at the Mid-Atlantic Ridge. New and published results provide evidence that 230Th/U ages obtained for massive sulfides are reliable. The sulfide deposits from the West, North-West, North-East, and East hydrothermal sites at the Semyenov hydrothermal district were formed between ∼124 ka and ∼37 ka ago. The hydrothermal activity might have started in the eastern part of the district and moved to the west by episodic ore formation.

Keywords

230Th/U dating hydrothermal activity ore formation massive sulfide geochronology

Copyright information

© © Versita Warsaw and Springer-Verlag Wien 2011