第42卷第4期 2015年8月
中国地质 GEOLOGYINCHINA
Vol.42, No.4 Aug.,2015
赵迎冬，甘华军，陈善斌，等.珠琼运动的厘定——来自北部湾盆地福山固陷构造况积特征的启示[].中国地质，2015,42(4)：948-959
Zhao Yingdong, Gan Huajun, Chen Shanbin, et al. Determination of Zhu Qiong movement: The enlightenment from tectonic and sedimentary characteristics of Fushan Sag, Beibuwan Basin[J). Geology in China, 2015, 42(4): 948959(in Chinese with English abstract),
珠琼运动的厘定一一来自北部湾盆地福山凹陷构造
沉积特征的启示
赵迎冬12甘华军2陈善斌12王观宏12王祥12章诚诚12
(1.中国地质大学(武汉)构造与油气资源教育部重点实验室，湖北武汉430074：
2.中国地质大学(武汉)资源学院，湖北武汉430074)
提要：南海北部盆地构造运动的认识向来存有争议，尤其是在珠琼运动的厘定上更是难以统一。通过分析南海及其周缘盆地的动力学背景特征，认为珠琼运动为发生在始新世至渐新世的一次大型伸展构造运动，根据其动力学背景可分为两幕。北部湾盆地福山凹陷在珠琼运动期间表现出明显的两期伸展背景，分别对应珠琼运动的两次幕式活动。根据福山国陷沉降速率变化、控沉积断裂与不同期次断裂分布特征，认为珠琼运动一幕的活动时间为早一中始新世，即54~39.4Ma，动力学机制为印度洋板块俯冲欧亚板块引起东南方向的地慢流并导致太平洋板块俯冲后退；珠琼运动二幕的活动时间为晚始新世至渐新世，即39.4~25.5Ma，起因于海南地慢柱柱头到达岩石圈底部引起东南方向的伸展效应。
关键词：构造运动；南海北部盆地；珠琼运动；福山凹陷；始新世一渐新世
中图分类号：P548;TE121
文献标志码：A
文章编号：10003657(2015)04-0948-12
Determination ofZhu-Qiongmovement:The enlightenmentfromtectonic and
sedimentarycharacteristicsofFushanSag,BeibuwanBasin
ZHAOYing-dong",GANHua-jun",CHENShan-bin2, WANGGuan-hong'2,WANGXiang2,ZHANGCheng-cheng
(1. Key Laboratory of Tectonics and Petroleum Resources, Ministry of Education, China University of Geosciences, Wuhan 430074,
Hubei, China; 2. Faculty of Earth Resources, China University of Geosciences, Wuhan 430074, Hubei, China)
Abstract: The understanding of tectonic activity in the north basins of South China Sea has long been controversial. It is especially difficult for researchers to hold identical views in the problem of the determination of the Zhu Qiong movement. Based on the research on the dynamic setting in the South China Sea and its surrounding basin, the authors believe that the ZhuQiong movement was a great extensional tectonic activity between Eocene and Oligocene, and it could be divided two episodes according to the dynamics in different stages. Fushan Sag is located in the southeast corner of Beibuwan Basin, which is one of the northermn basins of
收稿日期：2014-1016；改回日期：2015-03-16 基金项目：国家自然科学基金项目(41272122)资助。
作者简介：赵迎冬，男，1985年生，博士生，主要从事盆地分析方面的研究；E-mail:9li_0123@163.com。
http:/geochina.cgs.gov.cn中国地质，2015,42(4)