从地震信息看油气地质扭动构造的六大特征——兼述中国东部和中—西部典型扭动构造样式

作    者：杨克绳
单    位：东方地球物理勘探公司研究院地质研究中心
基金项目：
摘    要：
中国东部和中—西部含油气盆地内构造样式在平面上多为雁列展布，在构造演化过程中都注入了扭动因素。归纳出了扭动构造的六大地震地质特征，如扭断裂带主断面产状近于直立插入基底，向上向外撒开呈花状结构；花状结构的花枝呈喇叭口形弯曲；扭断裂带两侧同期构造及断裂呈雁列式展布等。中国东部第三纪以拉张翘倾运动为主，贯穿其内的郯庐断裂具有一定程度的扭动性质，使得中国东部的构造存在扭动因素，如济阳坳陷张扭性帚状构造样式、黄骅“入”字形断裂构造样式等。中国中—西部扭动构造的形成，受红河、阿尔金等断裂的影响，从河内盆地的扭动痕迹可以推测莺歌海盆地也具有扭动属性；沿阿尔金主断裂南缘派生的一组近东西向断裂呈右旋雁列。塔里木盆地的东西向断裂构造带以挤压为主，北西向形成右旋性质的压扭构造带，北东向则为左旋性质的压扭构造带。
关键词：地震剖面；构造特征；扭动构造；中国东部；中国中—西部

Seismic Information Implicates Features of Shearing Structure Systems in Petroliferous Basins: Examples of Styles of the Structure Systems in China

Author's Name: Yang Kesheng
Institution: Geophysical & Geological Research Institute BGP, PetroChina Co.
Abstract:
The styles of structure systems are generally en echelon-distributed in plane in petroliferous basins in Eastern part and Central-Western part of China, which commonly resulted from shearing during tectonic evolution. Six typical features of shearing structure systems are summarized based on various styles of seismic structures in these regions by seismic profiles interpretation,such as extensional姿-type structural systems in Jiyang Depression and the 自-type fracturing structural systems in Jiyang Depression in Bohaiwan Basin during Tertiary pull-apart movement. The W-E-trending fracturing belts are common compressive but the NW-trending ones are right-lat eral and NE-trending ones are left-lateral compresso-shearing structural systems in Tarim Basin under the effects of Honghe and Altun megafratures.
Keywords: Seismic profile; Shearing structure system; Structural style; Seismic interpretation; Eastern China;Central and Western China
投稿时间： 2003-12-11  
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