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湖南湘潭湘锰组黄铁矿Fe同位素初步研究
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摘要
<正>新元古代晚期,出现了两次全球性冰期事件,被称为"雪球地球"事件(Hoffman and Schrag,2002)。两次冰期的间冰期海水性质对深刻认识地球早期生物演化具有十分重要的意义。扬子地区广泛发育的南华系包括了从Sturtian冰期到Marinoan冰期的连续沉积,是全球最完整的间冰期地层,系统地记录了成冰纪间冰期海洋演化的珍贵信息。目前,关于新元古代晚期海水性质的研究主要集中在
引文
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