海底冷泉系统中的钙同位素示踪研究进展

Advance in Research of the Calcium Isotope Tracer in Cold Seep System of Sea Floor

海底冷泉系统中的钙同位素及其与天然气水合物形成关系的研究已有少量报道,现有的研究均表明,冷泉系统中钙同位素的分馏受多种因素和过程的控制,孔隙水及碳酸盐中的钙同位素不仅可以用来识别甲烷缺氧氧化界面的位置,也可以用来探讨冷泉系统中钙同位素分馏的控制机制。阐述了冷泉系统的基本特征、研究现状及其钙同位素示踪的研究进展,并据此分析了冷泉系统的形成演化与天然气水合物的关系,指出了钙同位素研究中存在的主要问题,旨在为国内学者进一步深入开展冷泉系统与天然气水合物关系的研究提供一些参考。

There have been few reports about relationship between calcium isotope in cold seep system of sea floor and gas hydrate formation.The current study showed that calcium isotope fractionation at cold seeps was controlled by multiple factors and processes.Pore-water and carbonate calcium isotope measurements may therefore offer potential to identify the location and intensity of anaerobic oxidation of methane（AOM） processes.It is also used to discuss control mechanism of calcium isotope fractionation at cold seep.This paper overviewed the basic characteristics and the research status of cold seep system and advance in research of calcium isotope tracer,and analyzed the relationship between the formation and evolution of cold seep system and gas hydrate.The major problems were also proposed in calcium isotope research.There will be some reference for further study of cold seep system and gas hydrate for domestic scholars.