波贝达热液群（大西洋中脊）海底块状硫化物形成的年代

IF 1.2 4区地球科学 Q3 Earth and Planetary Sciences

Geochronometria Pub Date : 2020-01-01 DOI:10.2478/geochr-2020-0019

V. Kuznetsov, G. Cherkashov, K. Kuksa, A. Firstova, F. Maksimov, V. Bel’tenev, L. Lazareva, S. Levchenko, N. Baranova

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引用次数: 4

摘要

摘要对大西洋中脊Pobeda热液群海底块状硫化物进行了地质年代和矿物学研究。为了提高地质年代数据的可靠性，测量了大块样品和单矿物分离物的230Th/U年龄。最古老的年龄约为Pobeda-1内的52 kyr和Pobeda-2油田内的107 kyr。然后，在这两个油田内分别发现了约0.3千年前和约4.3千年前的几次热液活动。

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Chronology of seafloor massive sulfides formation within the Pobeda hydrothermal cluster (Mid-Atlantic Ridge)

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.

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来源期刊

Geochronometria 地学-地球科学综合

CiteScore

2.20

自引率

0.00%

发文量

审稿时长

>12 weeks

期刊介绍： Geochronometria is aimed at integrating scientists developing different methods of absolute chronology and using them in different fields of earth and other natural sciences and archaeology. The methods in use are e.g. radiocarbon, stable isotopes, isotopes of natural decay series, optically stimulated luminescence, thermoluminescence, EPR/ESR, dendrochronology, varve chronology. The journal publishes papers that are devoted to developing the dating methods as well as studies concentrating on their applications in geology, palaeoclimatology, palaeobiology, palaeohydrology, geocgraphy and archaeology etc.