巢湖地区楚歌岭剖面下三叠统和龙山组碳同位素变化特征及其意义Carbon Isotopic Variation and Its Significance in Lower Triassic Helongshan Formation on Chugeling Section,Chaohu Area
罗锐,张利伟
摘要(Abstract):
碳同位素在海相碳酸盐岩研究中日益受到重视,成为重大地质事件识别与解释、地层划分与对比的重要手段之一。通过对巢湖地区楚歌岭剖面早三叠世地层碳同位素研究,显示Smithian\Spathian界线处碳同位素的快速正漂具有全球性特征,可以作为地层划分对比的良好标志;而且这一变化特征反映一次海洋生产力暴发事件,与海洋环境突变和灾后生物的复苏关系密切,为早三叠世海洋生态系统灾后重建过程的恢复提供了重要线索。
关键词(KeyWords): 下三叠统;碳同位素;地层划分与对比;生物复苏;巢湖地区
基金项目(Foundation):
作者(Author): 罗锐,张利伟
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