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湖相沉积岩中的同生变形构造及其地质意义

CONTEMPORANEOUS DEFORMED STRUCTURES IN LACUSTRINE SEDIMENTARY ROCKS AND THEIR GEOLOGICAL SIGNIFICANCE

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【作者】 赵澂林刘孟慧

【Author】 Zhao Chenglin Liu Menghui(East China Petroleum Institute. Shandong Dongying)

【机构】 华东石油学院华东石油学院 山东东营山东东营

【摘要】 本文以渤海湾周缘地区的东濮凹陷下第三系沙三沙四段湖相沉积岩中出现的同生变形构造为例,讨论其命名、分类、主要类型、形成机理及其在分析古沉积环境、古地理和古构造等方面的意义。这项讨论为研究陆相含油气盆地的同生变形构造提供了对比依据。

【Abstract】 This paper takes the contemporaneous deformed structures cccured in lacustrine sedimentary rocks of Sha-3 and Sha-4 Members, Lower Tertiary, Dongpy Depression, at the edge of Bohai bay basir, as an example, to discuss their nomenclature, classification, main types, formation mechanism, and application to the analysis of sedimentary paleoenvironment, paleogeography and paleostructure, This approach supplies with correlation busis for studying contemporaneous deformation structure in terrestrial petroleum-bearing basins.The classification of the contemporanecus deformed structures in lacustrine rocks in this paper is as follows:1. Deformational structures which were formed dominantly by vertical movement of soft sediments include convolution and its association structures and log ding and its associated structures.2. Those which were formed dominantly by lateral movement of soft sediments include sliding and its association structures and slumping and its associated structures.3. Those which resulted from dominantly liquid escape and its associated structures, include upward migration of liquefied sand flow and its associated structures.4. The 4th type of contemporaneous deformed structures occur in the gypsum-mud sediment.

  • 【文献出处】 岩石学报 ,Acta Petrologica Sinica , 编辑部邮箱 ,1988年04期
  • 【被引频次】27
  • 【下载频次】236
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