, Volume 38, Issue 1, pp 72-76

First online:

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

  • V. KuznetsovAffiliated withSt. Petersburg State University Email author 
  • , F. MaksimovAffiliated withSt. Petersburg State University
  • , A. ZheleznovAffiliated withSt. Petersburg State University
  • , G. CherkashovAffiliated withInstitute for Geology and Mineral Resources of the Ocean (VNIIOkeangeologia)
  • , V. Bel’TenevAffiliated withPolar Marine Geosurvey Expedition
  • , L. LazarevaAffiliated withPolar Marine Geosurvey Expedition

Rent the article at a discount

Rent now

* Final gross prices may vary according to local VAT.

Get Access


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.


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