摘要
碳酸盐岩中的稳定碳氧同位素可以用来定量恢复沉积环境古盐度、成岩环境,表明沉积物形成后大气淡水参与成岩作用强度,圈定潜在储层等。通过同位素δ13C、δ18O值,运用基恩和韦伯方程计算出古盐度参数,可以作为判定沉积环境和成岩环境的标准。以柴西南翼山浅油藏储层为例,运用δ13C、δ18O同位素值来判定其古盐度,为沉积相和沉岩作用的划分提供了科学的依据。
δ^13C andδ^18O values for carbonate rock may be used for quantitatively reconstructing paleosalinity,diagenetic conditions,degree of meteoric water participating in diagenesis and delineating potential reservoir.Exemplified by shallow oil reservoir in the Nanyishan,Qiadam basin,this paper appliesδ^13C andδ^18O values for carbonate rock to reconstruction of paleosalinity,providing scientific basis for division of sedimentary facies and diagenesis.
出处
《四川地质学报》
2010年第3期356-359,共4页
Acta Geologica Sichuan
关键词
碳氧同位素
沉积相
成岩作用
柴西南翼山
δ13C andδ18O values
sedimentary facies
diagenesis
Nanyishan
Qiadam basin
