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sha yan yan mai ( yan qiang yan chuang ) de yi zhong ke neng cheng yin chong shi gou cao de chong tian
Author(s): Zhong Jianhua China University of Petroleum, Dongying
Pages: 32-
36
Year: 1997
Issue:
2
Journal: Sedimentary Geology and Tethyan Geology
Keyword: 砂岩岩脉(岩墙、岩床); 成因; 冲蚀沟槽; 风成砂; 充填;
Abstract: 黄河三角洲的边滩、心滩上发育了大量冲蚀沟槽(冲槽)。这些冲蚀沟槽深数厘米至1m~2m,宽数厘米至数米,长数十厘米至十几、二十余米,但以深数十厘米,宽数厘米至十余厘米,长数米者多见。形态多样,有直立板片状、直立楔状、"上"状、梯形状、"U"形状及树枝状等,其内有时被风成砂充填。经成岩作用后,它们便会转变成砂岩岩脉(岩墙、岩床)。因此,冲蚀沟槽的(砂)充填可能是一种砂岩岩脉(岩墙、岩床)的形成方式。
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