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台西盆地新生代构造的演化
钟建强, 黄慈流, 詹文欢, 古森昌, 刘海龄, 刘帝光
中国科学院南海海洋研究所广州 510301

摘要:

于1986－1991年，应用地震地质方法，对台湾海峡的地震地层和地质构造进行调查。采用地震剖面资料，结合区域地质特征，对台西盆地的构造演化进行研究。认为该盆地由厦澎坳陷、乌丘屿坳陷、新竹坳陷和台湾坳陷等组成。其构造演化经历了中生代末－中始新世初始张裂、晚始新世－渐新世全面张裂、中新世构造调整，以及中新世末以来挤压－收缩－封闭等阶段，现今已成为残留陆缘裂谷盆地，是陆缘裂谷从产生到衰亡的一个典型实例。

关键词: 构造演化陆缘裂谷新生代台西盆地

DOI：

分类号:

基金项目:福建省科委重点基金资助项目，41204I1号

CENOZOIC TECTONIC EVOLUTION IN TAIXI BASIN

Zhong Jianqiang, Huang Ciliu, Zhan Wenhuan, Gu Senchang, Liu Hailing, Liu Diguang

South China Sea Institute of Oceanology, Chinese Academy of Sciences, Guangzhou 510301

Abstract:

Seismic stratigraphy and geology structure in Taiwan Strait were researched in 1986- 1991 by using the method of seismic geology. The tectonic evolution of Taixi Basin is studied in this paper by utilizing the information of seismic profiles and combining with the regional geologic characters. It is suggested that Taixi Basin is composed of Xiapeng Depression, Wuqiuyu Depression, Xinzhu Depression and Taiwan Depression, and so on. Its tectonic evolution had undergone four stages, that is, first spreading stage in the end of Mesozoic — Middle Eocene: second spreading stage in Late E0cene— Oligocene; tectonic readjustment stage in Miocene; and compression— closed stage since the end of Miocene. It has become a remained continental rift basin now, and is a typical example of continental rift from generating to dying.

Key words: Tectonic evolution, Continental rift, Cenozoic, Taixi Basin

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