摘要
结合碳酸盐岩层序地层分析，首次系统测定了马平组碳、氧同位素值，并对其演化规律与层序地层的关系进行了探讨．研究结果表明：马平组内δ１３Ｃ、δ１８Ｏ值变化范围分别是－２．５６‰～＋３．８９‰和－８．１６‰～－６．０２‰（ＰＤＢ）．准层序中δ１３Ｃ值向上逐渐减小，海进体系域（ＴＳＴ）和高水位体系域（ＨＳＴ）内δ１３Ｃ值则分别呈增加和减小的趋势，层序界面处δ１３Ｃ、δ１８Ｏ值均表现为负异常．
Combined with the analysis of caronate sequence stratigraphy,the stable isotope (δ 13 C,δ 18 O)values of Maping Formation (Gzelian-Asselian)are systematically measured. Then,the relations of their evolution to the sequence stratigraphy are discussed. The research results indicate that the δ 13 C values of parasequence decreases upward,while the δ 13 C values of transgressive systems tract(TST) and high stand systems tracts (HST) generally trend to increase and decrease respectively. The δ 13 C and δ 18 O values show obviously the negative anomaly at the sequence boundaries. It is also pointed out that the δ 13 C occurrence and evolution of the sequence stratigraphy are mainly controlled by the periodic variation of golbal glacio eustasy.
出处
《地球科学（中国地质大学学报）》
CSCD
北大核心
1996年第3期261-266,共6页
Earth Science-Journal of China University of Geosciences
基金
国家科委基础研究重大项目
关键词
碳同位素
氧同位素
碳酸盐岩
层序地层
马平组
carbon isotope
oxygen isotope
carbonate sequence stratigraphy
Maping Formation
southern Guizhou Province.
