珠江口盆地新生代碳酸盐岩形成地质条件  

Geological Conditions of Formation of Cenozoic Carbonate Rocks in the Pearl River Mouth Basin

作　　者：傅恒[1] 曾驿 周小康 卫哲 吴婷婷 高雁飞[1] 鲁静[1] FU Heng;ZENG Yi;ZHOU Xiaokang;WEI Zhe;WU Tingting;GAO Yanfei;LU Jing(Energy Institute,Chengdu University of Technology,Chengdu,610059;Shenzhen Branch,CNOOC,Shenzhen,Guangdong,518000)

机构地区：[1]成都理工大学能源学院,成都610059 [2]中海石油(中国)深圳分公司,广东深圳518000

出　　处：《地质学报》2018年第11期2349-2358,共10页Acta Geologica Sinica

基　　金：中海石油(中国)深圳分公司项目(编号CCL2015SKPS0021);国家自然科学基金项目(编号91228208)联合资助成果

摘　　要：珠江口盆地新生代碳酸盐岩分布面积大,已发现我国海上最大生物礁油田,具有重要研究价值。本文根据南海新生代构造演化及珠江口盆地新生代构造沉积演化,研究碳酸盐岩形成地质条件。发现南海新生代碳酸盐岩分布与新生代古南海消亡及新南海扩张密切相关,适宜碳酸盐岩发育的窗口期正是新南海扩张期,明显受新南海扩张的控制。新南海在渐新世—中新世的两期扩张,与新特提斯弧后扩张有关。珠江口盆地发育两种类型的碳酸盐台地,即古隆起镶边碳酸盐台地和火山建隆孤立碳酸盐台地。古隆起或火山建隆分布、构造沉降及全球海平面升降是珠江口盆地碳酸盐岩及生物礁发育的主控因素。The Cenozoic carbonate rocks,which are distributed widely in the Pearl River Mouth Basin,were found to host the largest biogenic reef oil field on the sea in China and of important research value.Based on the Cenozoic tectonic evolution of the South China Sea and Cenozoic tectonic evolution of the Pearl River Mouth Basin,this paper presents the study of geological conditions of carbonate formation.The study found that the distribution of Cenozoic carbonate rocks in the South China Sea is closely related to the disappearance of the ancient South China Sea and the expansion of the New South China Sea,and the suitable window period for the development of carbonate rocks was the extension period of the New South China Sea,obviously controlled by the expansion of the New South China Sea.The two expansions of the New South China Sea in the Oligocene—Miocene were related to the Neo Tethys back arc spreading.The Pearl River Mouth basin developed two types of carbonate platform：the ancient uplift edge of carbonate platform and volcano uplift isolated carbonate platform.The distribution of ancient uplift or volcanic uplift,tectonic subsidence and the global sea-level fluctuation are the main controlling factors of carbonate rocks and reef development in the Pearl River Mouth Basin.

关 键 词：南海 珠江口盆地 碳酸盐岩 生物礁 

分 类 号：P534.6[天文地球—古生物学与地层学] P588.245[天文地球—地质学] P744.4