Abstract 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.

中文翻译：

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Pobeda热液群（中大西洋海脊）内海底块状硫化物形成的年代学

摘要 对大西洋中脊波贝达热液群的海底块状硫化物进行了年代学和矿物学研究。为了提高地质年代学数据的可靠性，对大块样品和单矿物分离物都测量了 230Th/U 年龄。年龄最大的约。Pobeda-1 和大约 52 kyr。已获得 Pobeda-2 油田内的 107 kyr。然后，在两个油田内确定了几次热液活动，直到大约 10 年。0.3 kyr 之前，直到大约。分别为 4.3 kyr 前。