调节带和转换带及其在伸展区的分段作用  

Accomodation Zones and Transfer Zones and Their Roles in the Segmentation of the Extended Terranes

作　　者：赵红格[1] 刘池阳[1] 杨明慧[1] 王定一[1] 

机构地区：[1]西北大学地质学系,陕西西安710069

出　　处：《世界地质》2000年第2期105-111,共7页World Geology

摘　　要：调节带和转换带是一种重要的构造现象，近年已逐渐受到重视。由于大多数正断层体系都终止于调节带或转换带，使其成为产生区域分段的主因。转换带是平行于拉张方向具是滑和斜滑断层作用的不连续带；调节带是多个断层叠覆终止的区带。对不同伸展区和被动边缘调节带和转换带几何形态和运动特征的总结认为，调节带和转换带中的变形方式不依赖于伸展规模。调节带和转换带不但控制地形起伏和沉和环境，而且对烃类及地下水的聚集亦有重要影响。Accomedation zones and transfer zones are important structural phenomena and they have been gradually appreciated recently. Most normal faults terminate in accomodation zones and transfer zones which are the main ream causing rngional segnentation of extended zone. The paper synthesizes the former classification and proposed a revised, nongenetic of accomodtion zones and transfer zones which can be subdivided according to their angle relationship with extended direction and the trend of faults system at their two ends, strike - slip direction etc. respectively. It suggests transfer sones are the discrete zones of strike - slip and oblique slip faulting that generally tend to parallel to extension direction, and accomedation zones are belts of overlapping fault terminations. A review of the geometry and kinematics of accomedation zones and transfer sones in variously extended continental provinces and passive continental margins reveals that the style of deformation within aforation zones and transfer zones is independent of the magnitude of extension. They define topogaphic relief and sedimental settings and play important roles in the accumulation of hydnybon and under water.

关 键 词：调节带 转换带 叠覆断裂 伸展构造区 分段作用 

分 类 号：P542.3[天文地球—构造地质学]