新元古代雪球事件与环境突变的研究进展报告

沈延安

摘要：“雪球地球”事件是地球历史上最极端的气候事件，针对这一时期海洋氧化环境、极端气候事件、以及生命演化过程进行研究，深入探讨它们之间的相互联系和相互影响，是当今地球科学最基础和最前沿的领域。华南的新元古代地层连续、出露广泛、化石丰富，并由碳酸盐岩和细碎屑岩为主的沉积序列构成，是解决这一时期全球年代地层和环境演化的关键地区。我们计划运用多硫同位素、Fe同位素和团簇同位素等方法来研究这一事件。深入探讨这一时期极端气候变化、大气和海洋环境转化、以及生命演化之间的相互作用关系。

关键词：新元古代；雪球事件；华南

Neoproterozoic “Snowball Earth” Events and Environmental Changes： A progress report

Abstract：Neoproterozoic “Snowball Earth” is one of the most extreme climatic changes over geological history. To understand redox chemistry evolution， abrupt climatic changes， and their interaction with life evolution is a fundamental and cutting edge question in geosciences. In South China， continuous deposition of the Neoproterozoic carbonates and siliciclastic rocks rich in fossil record were preserved， and therefore it is a key area to study Neoproterozoic environmental evolution. We will apply multiple S-isotope， Fe isotope and clumped isotope to study Neoproterozoic climatic changes， evolution of ocean and atmospheric chemistry and their influences on life evolution.

Keywords：Neoproterozoic；snowball-Earth；south China

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