Abstract

The paper presents the results of studying the authigenic sulfide aggregates (pyrite) from sediments in the southwestern South China Sea. Materials for the study were obtained during a comprehensive geological-geophysical expedition aboard the R/V Akademik M.A. Lavrentyev (Cruise 88) (Shakirov et al., 2021). The morphology and microstructure of pyrite were studied. Isotopic studies of sulfur in pyrite were performed to elucidate the genesis of sulfides, and the abiogenic nature of their formation was substantiated for the first time in the Fu Han Basin. The biogenic origin of most other sulfide formations was confirmed by geomicrobiological investigations. The study of the composition and admixtures in pyrite revealed a high Ni content in this mineral.

中文翻译：

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越南大陆架和南海斜坡底部沉积物自生硫化物矿化分布及成因特征

摘要

本文介绍了研究南海西南部沉积物中自生硫化物聚集体（黄铁矿）的结果。研究材料是在 R/V Akademik MA Lavrentyev（Cruise 88）（Shakirov 等人，2021 年）上进行的全面地质地球物理考察期间获得的。研究了黄铁矿的形貌和显微组织。黄铁矿中硫的同位素研究阐明了硫化物的成因，并在阜汉盆地首次证实了硫化物形成的非生物性质。大多数其他硫化物地层的生物起源已通过地球微生物学研究得到证实。对黄铁矿中的成分和混合物的研究表明，这种矿物中的镍含量很高。