地学前缘 ›› 2014, Vol. 21 ›› Issue (6): 254-263.DOI: 10.13745/j.esf.2014.06.025

• 论文 • 上一篇    下一篇

南海北部古构造格局对中、新生界发育的影响

张莉,曾维军,韦振权,林珍,雷振宇,帅庆伟   

  1. 1. 国土资源部 海底矿产资源重点实验室, 广东 广州 510760 2. 国土资源部 广州海洋地质调查局, 广东 广州 510760
  • 收稿日期:2013-09-18 修回日期:2013-12-30 出版日期:2014-11-15 发布日期:2014-11-15
  • 作者简介:张莉(1965—)，女，博士，教授级高级工程师，主要从事海洋地质、海洋石油地质等研究。E-mail:zhangli20cn@21cn.com
  • 基金资助:

    全国油气资源战略选区专项“南海北部中生界油气资源前景调查与战略选区”(2009GYXQ03)

The impact of northern South China Sea paleotectonic framework on development of Mesozoic and Cenozoic

  • Received:2013-09-18 Revised:2013-12-30 Online:2014-11-15 Published:2014-11-15

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摘要：

南海北部中生界是南海海域进一步油气勘探的新领域和新层系。对于中生界的形成演化背景与分布特征一直广受关注，南海北部的地质地球物理调查研究成果揭示, 该区与华南东部陆区分块明确，其边界是珠外—台湾海峡断裂带和丽水—海丰—琼东南断裂带。由此划分的南海北缘—台湾地块与南华活动区有亲缘关系，即可视为南华活动区的组成部分，其形成演化过程与华南加里东构造旋回密切相关。南海北部陆缘区与华南东部陆区在加里东造山期所遗留的古缝合带和地壳分块性仍不同程度影响区内中、新生界的发育特征，南海东北部出现大套海相海陆交互相上三叠统—下侏罗统、上侏罗统—下白垩统和上白垩统—始新统见证了这一现象。

 

关键词: 南海北部陆缘, 扬子地台, 南华活动区, 加里东构造旋回, 中生界, 新生界

Abstract:

 Mesozoic is a new field and a new layer of hydrocarbon exploration in northern South China Sea (SCS). Its formation, evolution and distribution feature attract geologists interests consequently. The results of geological-geophysical investigation revealed that the block boundary between northern SCS and eastern South China (SC), which is Zhuwai-Taiwan strait fault zone and Lishui-HaifengQiongdongnan fault zone, is definite. Therefore, north margin of SCSTaiwan block can be considered as a part of SC activity zone, and its formation closely related to SC Caledonian tectonic cycle. The development characteristics of Mesozoic and Cenozoic were affected by suture zone and crustal subblock feature remained by Caledonian orogency between northern margin of SCS block and eastern SC block. It is also proved by the discovery of transitional strata of upper Triassiclower Jurassic, upper Jurassiclower Cretaceous, and upper CretaceousEocence in Northeastern SCS.

 

Key words: northern margin of South China Sea, Yangtze block, South China activity zone, Caledonian tectonic cycle, Mesozoic, Cenozoic

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