期刊
GEOCHRONOMETRIA
卷 47, 期 1, 页码 63-70出版社
SCIENDO
DOI: 10.2478/geochr-2020-0019
关键词
geochronology; hydrothermal activity; 230Th/U dating; seafloor massive sulfides
资金
- RFBR [18-05-00861]
A geochronological and mineralogical study on the seafloor massive sulfides from the Pobeda hydrothermal cluster at the Mid-Atlantic Ridge was carried out. To improve the reliability of geochronological data, the 230Th/U ages were measured for both the bulk samples and monomineral separates. The oldest age ca. 52 kyr within Pobeda-1 and ca. 107 kyr within Pobeda-2 fields have been obtained. Then, several episodes of hydrothermal activity were identified within both fields up to ca. 0.3 kyr ago and up to ca. 4.3 kyr ago, respectively.
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