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Опубликовано
2011-01-28
Опубликовано на SciPeople2012-01-13 21:17:59
ЖурналGeochronometria
230 Th/U chronology of ore formation within the Semyenov hydrothermal district (13° 31′ N) at the Mid-Atlantic ridge
Volume 38, Number 1, 72-76, DOI: 10.2478/s13386-011-0001-1
Subject Quantitative Geography
ISSN1733-8387 (Print)
1897-1695 (Online)
Аннотация
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.
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