自生黄铁矿的微生物成矿机理及对冷泉泄漏的指示意义

发布时间：2018-05-04 02:45

本文选题：自生黄铁矿 + 冷泉泄漏　；参考：《海洋地质与第四纪地质》2017年02期

【摘要】：自生黄铁矿普遍存在于海洋沉积物中,其矿物学、地球化学及同位素组成均蕴含着丰富的环境信息,也是当前地球科学和微生物学交叉研究的典型矿物之一。以之既可用来恢复沉积、成岩环境的演化变迁,亦可为海洋油气和天然气水合物藏勘探、开发提供可靠依据。综述了海洋环境中自生黄铁矿形成机制、铁-硫同位素的分馏及生物地球化学过程及其在冷泉泄漏系统中的指示作用,并对当前围绕黄铁矿进行研究的几个焦点问题的进展进行了阐述,尤其是与引发广泛关注的天然气水合物动态变化间的关系。主要目的是促使更深入地了解黄铁矿的沉淀、成岩作用及环境指示意义,加强人们对微生物催化因素和冷泉泄漏区自生黄铁矿的关注程度。
[Abstract]:Authigenic pyrite is widely found in marine sediments. Its mineralogy, geochemistry and isotopic composition contain abundant environmental information, and are also typical minerals in the cross-study of geoscience and microbiology. It can be used not only to restore sedimentation and evolution of diagenetic environment, but also to provide reliable basis for exploration and development of marine oil, gas and gas hydrate reservoirs. The formation mechanism of authigenic pyrite in marine environment, the fractionation and biogeochemical process of iron-sulfur isotopes and their indicative role in cold-spring leakage systems are reviewed. The development of several focus issues on pyrite, especially the relationship with the dynamic changes of natural gas hydrate, which has aroused wide attention, is also discussed in this paper. The main purpose of this paper is to promote a deeper understanding of pyrite precipitation diagenesis and environmental indicators and to enhance the attention paid to microbial catalytic factors and autogenous pyrite in cold spring leakage area.
【作者单位】：中国海洋大学海洋地球科学学院;国土资源部海洋油气资源与环境地质重点实验室;中国地质调查局青岛海洋地质研究所;
【基金】：鳌山科技创新计划项目(2015ASKJ03) 国家自然科学基金项目(41376077,41606087) 国土资源部海底矿产资源重点实验室开放基金(KLMMR-2015-B-10) 中国地质调查局海洋地质调查计划项目(121201005000150015)
【分类号】：P736.3

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