Journal
GEOCHRONOMETRIA
Volume 47, Issue 1, Pages 63-70Publisher
SCIENDO
DOI: 10.2478/geochr-2020-0019
Keywords
geochronology; hydrothermal activity; 230Th/U dating; seafloor massive sulfides
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Funding
- RFBR [18-05-00861]
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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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