胡春林,赵方臣,纪秋梅,朱茂炎

• 1:中国科学院南京地质古生物研究所和生物演化与环境卓越中心现代古生物学和地层学国家重点实验室
• 2:中国科学院大学地球科学学院

摘要(Abstract)：

埃迪卡拉系底部发育一套覆盖在成冰纪冰碛杂砾岩之上的碳酸盐岩地层,被称为"盖帽碳酸盐岩",它是超级温室气候事件的沉积标志层,代表了新元古代"雪球"冰期的结束。通过对宁镇山脉地区新元古代地层的野外调查,在镇江丹阳帽山剖面南沱冰碛杂砾岩层顶部发现厚约4 m的含锰碳酸盐岩。沉积岩石学和稳定碳、氧同位素研究表明,这层碳酸盐岩具有盖帽碳酸盐岩的典型特征,可以与扬子板块其他地区的盖帽碳酸盐岩进行对比。这是宁镇山脉地区存在盖帽碳酸盐岩的首次报道。

关键词(KeyWords)： 岩石地层;盖帽碳酸盐岩;“雪球地球”;碳同位素;埃迪卡拉系;宁镇山脉;江苏

Abstract:

Keywords:

基金项目(Foundation): 中国科学院战略性先导科技专项(B类)资助(XDB18000000)

作者(Author): 胡春林,赵方臣,纪秋梅,朱茂炎

DOI: 10.19839/j.cnki.dcxzz.2018.04.003

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