南海南部北康盆地中新世碳酸盐台地地震响应及分布特征
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  • 英文篇名:Seismic responses and distribution characteristics of the Miocene carbonate platforms in the Beikang Basin of southern South China Sea
  • 作者:鄢伟 ; 张光学 ; 张莉 ; 夏斌 ; 杨振 ; 雷振宇 ; 骆帅兵 ; 钱星
  • 英文作者:YAN Wei;ZHANG Guangxue;ZHANG Li;XIA Bin;YANG Zhen;LEI Zhenyu;LUO Shuaibing;QIAN Xing;MNR Key Laboratory of Marine Mineral Resources,Guangzhou Marine Geological Survey;Marine Petroleum and Gas geological Research Center (China Geological Survey),Guangzhou Marine Geological Survey;School of Marine Sciences,Sun Yat-Sen University;
  • 关键词:碳酸盐台地 ; 地震响应 ; 中新世 ; 北康盆地 ; 南海南部
  • 英文关键词:carbonate platform;;seismic response;;Miocene;;Beikang Basin;;South China Sea
  • 中文刊名:HYDZ
  • 英文刊名:Marine Geology & Quaternary Geology
  • 机构:广州海洋地质调查局自然资源部海底矿产资源重点实验室;广州海洋地质调查局中国地质调查局海洋石油天然气地质研究中心;中山大学海洋科学学院;
  • 出版日期:2018-12-28
  • 出版单位:海洋地质与第四纪地质
  • 年:2018
  • 期:v.38;No.176
  • 基金:国土资源部海底矿产资源重点实验室开放基金“南海南部深水盆地碳酸盐岩台地流体活动特征及对储层的控制”(KLMMR-2017-A-16);; 中国地质调查局项目南海X部油气资源调查(DD20160155)
  • 语种:中文;
  • 页:HYDZ201806012
  • 页数:9
  • CN:06
  • ISSN:37-1117/P
  • 分类号:121-129
摘要
以大量高精度2D地震资料分析为基础,对北康盆地碳酸盐台地地震反射特征、演化期次及分布特征开展了系统研究。北康盆地碳酸盐台地自早中新世开始发育,中中新世广泛分布,而从晚中新世开始衰退淹没。中新世碳酸盐台地多为孤立台地,台地边缘常发育断层,台地顶部在地震剖面上多呈现为两条平行和亚平行强反射轴,内部呈杂乱和亚平行空白及弱反射轴,底部则多为一条光滑的平行和亚平行弱反射轴。北康盆地中新世碳酸盐台地发育可以划分为3个期次,第1期台地发育范围大且厚度较薄;第2期台地范围缩小,受到断层控制明显;第3期台地范围进一步缩小直至被淹没。北康盆地中新世碳酸盐台地主要为北东向和北西向,这与周边盆地和现今碳酸盐台地走向一致,其平面分布受到构造隆起和断裂的控制。
        Seismic reflection characteristics,as well as the distribution pattern and evolution history of the carbonate platforms in the Beikang Basin are systematically studied in this paper,based on the high resolution2 D seismic data acquired so far.The study filled the gap in the research of carbonate platforms in the Beikang Basin,having great significance for revealing the evolutionary history of carbonate platforms and prediction of carbonate reservoirs.The carbonate platforms in the Beikang Basin started from Early Miocene,extended in Middle Miocene,and declined and drowned in Late Miocene.The Miocene carbonate platforms are mostly isolated by faults on the edge of platforms.In seismic sections,the top of the carbonate platform always has two parallel or sub-parallel strong reflection axes and the inside is characterized by blank and disordered reflection or sub-parallel weak reflection axes sometimes.While the bottom of the platform is a smooth parallel or sub-parallel weak reflection axes.The Miocene carbonate platforms in the Beikang Basin can be subdivided into three stages.The platforms in the first stage were wide laterally,but thin in thickness.In the second stage,the platforms were controlled by faults obviously with smaller lateral extension.In the third stage,however,the platforms were submerged gradually and disappeared finally.The Miocene carbonate platforms were mainly north-east and north-west in direction,similar to the platforms in other basins adjacent and present platforms in the South China Sea.The distribution of these carbonate platforms are possibly controlled by structural highs and faults.
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