摘要
通过对琼州海峡北岸西部地区地层资料的分析,认为该区自第三纪以来的构造沉降达1200多米,构造沉降过程可划分为7个时期,盆地演化经历了幼一少年期(E_1—E_2)、青年期(E_3—N_1~1)、壮年期(N_1~2一N_2)、和中一老年期(Q_1—Q_4)等4个阶段,前3个阶段以构造沉降为主,第4阶段则转变为构造抬升为主。
By studying the information of sedimentary strata in the west area of Qiongzhou Strait, it is considered that the tectonic subsidence in the studied siea is more than 1 200 meters since Tertiary. The process of tectonic subsidence can be divided into Seven periods. The evolution of the sedimentary basin has been through four stages,which are baby-teenage stage(E1-E2), youth Stage(E3-N11), adult stage(N12-N2), and medial-old stage(Q1- Q4). Among the four stages, the first three ones are generally in the State of tectonic subsidence, the fourth one has turned into a tectonic uplift.
出处
《热带海洋》
CSCD
1990年第3期100-104,共5页
