沈延安
摘要:“雪球地球”事件是地球歷史上最極端的氣候事件,針對這一時期海洋氧化環境、極端氣候事件、以及生命演化過程進行研究,深入探討它們之間的相互聯系和相互影響,是當今地球科學最基礎和最前沿的領域。華南的新元古代地層連續、出露廣泛、化石豐富,并由碳酸鹽巖和細碎屑巖為主的沉積序列構成,是解決這一時期全球年代地層和環境演化的關鍵地區。我們計劃運用多硫同位素、Fe同位素和團簇同位素等方法來研究這一事件。深入探討這一時期極端氣候變化、大氣和海洋環境轉化、以及生命演化之間的相互作用關系。
關鍵詞:新元古代;雪球事件;華南
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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