岩性地层单位，晚二叠世晚期海相地层。其内以含丰富的燧石条带为显著特征。
...网 关键词 ： 四川盆地 东 长兴组 生物礁 储集层 录井 [gap=1525]Keywords : Sichuan Basin, east, Changxing formation, bioherm, reservoir, well logging ...
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织金煤田西南矿区龙潭组、长兴组广泛发育菱铁矿层。
Siderite is vastly developed in the Longtan, Changxing formations in southwestern mine area, Zhijin coalfield.
本文根据川东的勘探，总结了上二叠统长兴组潜伏生物礁的特征。
According to the exploration in Eastern Sichuan, the characteristics of the hidden organic reefs in Changxing formation of Upper Permian is summarized in this paper.
长兴组储集岩为各种颗粒(礁)云岩或具颗粒幻影的细晶云岩，灰岩类储层欠发育。
The Changxing formation's reservoir lithology included all kinds of grain dolostones and reef dolostones as well as fine-crystal dolostones remaining grain apparition excluding the limestones.
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