论大陆盆-山构造格局、盆地扩张及其形成机制  

ON CONTINENTAL BASIN-MOUNTAIN TECTONIC FRAMEWORK AND CONTINENTAL BASIN SPREADING

作　　者：白文吉[1] 杨经绥[1] 

机构地区：[1]中国地质科学院地质所

出　　处：《吉林大学学报（地球科学版）》1985年第4期21-28,共8页Journal of Jilin University：Earth Science Edition

摘　　要：迄今为止,对大陆本身的扩张现象还论及甚少,并且多限于大陆裂谷。关于大陆边缘增生现象,也限于论及大陆架和岛弧的安山岩和沉积物方面。在大陆板块内还存在另一种尚未被引起重视但又十分普遍的扩张作用,即与海洋底扩张作用同时发生并有相似机制的盆地扩张作用。正是由于这种盆底的扩张作用,改变着大陆面貌。Owing to marine geology investigation the spreading of oceaa floor has been revealed.However, the continental spreading is least discussed and limited in continental rifting.Spreading of basin floor within continental plates is common and similar to the sea-floor spreading,but until then,it has not been noticed yet. The spreading of basin floor involres the openning and thinning of the crust of the basin floor, with the result of making mountains around the basin and leading to earthquakes and volcanic activities. The basin floor spreading changes the face of the continent and forms a basin-mountain framework in the continent.The mid-oceanic ridges and transform faults are main tectonic systems on oceaa floor.They have been named as'#'type tectonic system and inferred that the same type of tectonic system may also occur within continental basin floor.

关 键 词：构造格局 大陆板块 形成机制 大陆边缘 正断层 盖层 扩张作用 水平断距 大陆裂谷 岩浆活动 

分 类 号：P542.3[天文地球—构造地质学]