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Cathodeluminescence characteristics and analysis of carbonate cements in Xihu Sag
Author(s): 
Pages: 1-3
Year: Issue:  2
Journal: FAULT-BLOCK OIL AND GAS FIELD

Keyword:  碳酸盐矿物阴极发光方解石铁白云石菱铁矿;
Abstract: 西湖凹陷是东海陆架盆地中主要的舍油气凹陷之一,该区域最重要的自生矿物是碳酸盐胶结物,对储层的影响至关重要,其主要类型为方解石、铁白云石和菱铁矿.根据碳酸盐矿物阴极发光的特征,结合其碳、氧同位素特征研究了该区碳酸盐矿物的形成环境和成岩特征,方解石是在相对较晚的成岩阶段沉淀的,而铁白云石的胶结作用是在较早的成岩阶段,菱铁矿也是早成岩阶段的产物.
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