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hu bei song zi xia ao tao tong da wan zu tan suan yan yan ya shi zuo yong
Author(s): 
Pages: 278-284+359
Year: Issue:  4
Journal: Oil & Gas Geology

Keyword:  碳酸盐岩压实作用压缩量化石形变瘤状灰岩大湾组;
Abstract: 湖北松滋一带下奥陶统大湾组主要为一套盆地边缘—浅海陆棚相的含泥碳酸盐岩沉积,以发育瘤状构造为特征。其中普遍发育机械压实与压溶现象,包括化石颗粒变形、嵌入接触、缝合线及微缝合线、压溶粘土膜及束状粘土纹等标志.通过对角石类化石形变的定量研究,计算出各类岩石的压缩量,结果表明含泥碳酸盐岩的压缩量随着其中粘土矿物含量的增加而增加,灰岩、含泥灰岩、泥质灰岩、灰质泥岩及泥(页)岩的压缩量分别为4.19%、10.02%、23.00%、51.49%、62.51%。认为瘤状灰岩为差异压实-压溶作用形成。
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