桂中合山组碳酸盐岩的氧、碳稳定同位素组成及古盐度和古温度
邵龙义,张鹏飞
摘要(Abstract):
本文探讨了桂中晚二叠世合山组碳酸盐岩氧、碳稳定同位素的“年代效应”校正及古盐度与古温度计算问题,结果表明合山组煤系的碳酸盐岩形成于海相环境,校正后的δ~13C在0.07~4.75‰之间,z值>120,且Z值的梯度变化与沉积环境基本一致。用校正后的δ~18O计算出碳酸盐岩形成时介质古温度为12~37℃,且大多在19—29℃,说明晚二叠世该区属温暖或炎热的热带气候。
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基金项目(Foundation):
作者(Author): 邵龙义,张鹏飞
参考文献(References):
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