海洋地质与第四纪地质2025，Vol.45Issue(1)：136-153,18.DOI:10.16562/j.cnki.0256-1492.2023070701
南海主要断裂(带)与构造分区
Main faults and tectonic divisions in the South China Sea
摘要
Abstract
Regional tectonic division is the foundation for studying tectonic evolution.The boundaries of regional tectonic division are mostly based on huge faults.Therefore,it is essential to study the major faults(belts)in one area before dividing structural units.After analyzing the main faults(or fault zones)in the South China Sea in plate tectonics theory,the tectonic division for the South China Sea was improved.The major faults(or fault zones)in the South China Sea include the first-order or primary fault zones that are characterized by subduction zones,collision zones,large thrust zones,and large strike-slip zones;the second-order faults that cut through the sedimentary basement and the upper crust,extending to the lower crust;and the third-order ones that run across sedimentary basement.The first-level tectonic unit in this region is the"South China Sea Subplate",whose boundaries are mostly the first-order faults or sometimes the second-order ones.The second-level tectonic units include microplate,stepped fault zone,uplifted area,deep depression area or belt etc.The third-level tectonic units are are those divided within a microplate,including uplifted depression zone and microblock.关键词
主要断裂(带)/构造活动/构造分区/南海Key words
major faults or fault zones/tectonic activity/tectonic unit/the South China Sea分类
海洋科学引用本文复制引用
邱燕,杜文波,鞠东,韩冰,马浩明,胡小三..南海主要断裂(带)与构造分区[J].海洋地质与第四纪地质,2025,45(1):136-153,18.基金项目
广东省特支计划(GML2019BT02H594) （GML2019BT02H594）
中国地质调查局项目(DD20221712,DD20240090) （DD20221712,DD20240090）
