<abstract xml:lang="en" xmlns="http://www.w3.org/1999/xhtml"><p>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.</p></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.

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

St. Petersburg State University, V.O., 10-th Line 33, 199178, St. Petersburg, Russia

Institute for Geology and Mineral Resources of the Ocean (VNIIOkeangeologia), Angliysky Prospect 1, 190121, St. Petersburg, Russia

Polar Marine Geosurvey Expedition, Pobedy Str. 24, 198412, Lomonosov, St. Petersburg, Russia

Geochronometria

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.

A radiochemical study was carried out on massive sulfides from Semyenov hydrothermal district at the Mid-Atlantic Ridge. New and published results provide...

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

Online veröffentlicht: 28. Jan. 2011

Seitenbereich: 72 - 76

DOI: https://doi.org/10.2478/s13386-011-0001-1

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

© 2011 Silesian University of Technology, Gliwice, Poland

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.

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

Online veröffentlicht: 28. Jan. 2011

Seitenbereich: 72 - 76

DOI: https://doi.org/10.2478/s13386-011-0001-1

Schlüsselwörter230Th/U dating, hydrothermal activity, ore formation, massive sulfide, geochronology

© 2011 Silesian University of Technology, Gliwice, Poland

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.

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