闽西南晚古生代─早三叠世沉积特征及其大地构造意义  

The Late Paleozoic-Early Triassic sedimentary characteristics and its tectonic significance in southwestern Fujian,China

作　　者：王果胜[1] 马文璞[1] 朱卫平[2] 

机构地区：[1]中国地质大学地球科学与资源学院,北京100083 [2]中国国土资源航空物探遥感中心,北京100083

出　　处：《成都理工大学学报（自然科学版）》2009年第1期87-91,共5页Journal of Chengdu University of Technology: Science & Technology Edition

基　　金：国家自然科学基金资助项目(40572129)

摘　　要：闽西南晚古生代-早三叠世具有典型的被动大陆边缘沉积建造特征,被动大陆边缘大陆坡向南倾斜,大田、漳平一线相当于当时陆坡下部的位置,沉积盆地中心位于大田-龙岩-永定一带,具有北、南两个方向的物质来源。闽西南晚古生代古生物有特提斯域亲缘分子,早三叠世溪口组是被动大陆边缘最后的海相沉积,其构造演化历史与古特提斯洋的演化在时间和地质特征等方面非常相似。晚古生代-早三叠世早期,闽西南海域可能是古特提斯海域的一个分支,它的构造演化从一个侧面反映了东古特提斯的演化。The Late Paleozoic-Early Triassic sedimentary characteristics in southwestern Fujian indicate that the Late Paleozoic-Early Triassic sedimentary construction is a typical passive continental margin sedimentary, and its continental slope faces to south, the line of Datian-Zhangping is equivalent to the low part of the slope at that time. The centre of the sedimentary basin lies at the line of Datian-Longyan-Yongding, with the source materials from the north and south. There are Tethys domain genetic elements in the Late Paleozoic paleontology of southwestern Fujian. The Early Triassic Xikou group is the last marine sediment of the passive continental margin; its tectonic evolution is similar to that of the ancient Tethys in time and geological features etc.. It may be a branch of the ancient Tethys Ocean in southwestern Fujian sea area, and its tectonic evolution reflects that of the ancient Tethys.

关 键 词：晚古生代-早三叠世 沉积建造 被动大陆边缘 闽西南 

分 类 号：P512.2[天文地球—地质学]