利用卫星重力异常研究南黄海地区中生界厚度
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摘要
利用卫星重力异常数据 ,以盆地内钻孔和部分地震勘探解释结果为约束 ,采用多约束密度界面反演方法 ,计算了南黄海地区的中生界底界面深度 ;结合地震解释的新生界底界面深度 ,计算了区内中生界的残余厚度。南黄海地区中生界的分布规律是东厚西薄 ,北厚南薄。从分布区域来看 ,南黄海盆地北部坳陷和中部隆起的东部是中生界残余厚度分布范围最广的地区 ,而南黄海盆地南部坳陷和勿南沙隆起区中生界基本缺失。南黄海盆地北部坳陷和中部隆起的东部中生界残余厚度最大达 80 0 0m。区内中生界展布方向变化较大 ,以北西西向为主 ,兼有北东东向、北东向、北北东向和近南北向。
The Mesozoic base depth in the southern Yellow Sea has been calculated by using satellite data of gravity anomaly and an inversion method of density interfaces.During the calculation,some drilling data and seismic interpretation are used as constraints.In addition,the Mesozoic relict thickness is calculated in combination with considering the Cenozoic base depth derived from seismic interpretation.The Mesozoic distribution in this region may be characterized by thickening towards east and north and thinning towards west and south.The Mesozoic relict thickness is best preserved in North Depression and the eastern Central Uplift,and largely in absence in South Depression and Wunansha Uplift.In North Depression and the eastern Central Uplift,the thickest Mesozoic can be up to 8、000 m.The Mesozoic trend changes greatly,with the WNW_trending predominant and the ENE、,NE、,NNE、 and nearly S、N、trending also seen.
The Mesozoic base depth in the southern Yellow Sea has been calculated by using satellite data of gravity anomaly and an inversion method of density interfaces.During the calculation,some drilling data and seismic interpretation are used as constraints.In addition,the Mesozoic relict thickness is calculated in combination with considering the Cenozoic base depth derived from seismic interpretation.The Mesozoic distribution in this region may be characterized by thickening towards east and north and thinning towards west and south.The Mesozoic relict thickness is best preserved in North Depression and the eastern Central Uplift,and largely in absence in South Depression and Wunansha Uplift.In North Depression and the eastern Central Uplift,the thickest Mesozoic can be up to 8、000 m.The Mesozoic trend changes greatly,with the WNW_trending predominant and the ENE、,NE、,NNE、 and nearly S、N、trending also seen.
引文
1)温珍河等.南黄海(35°N 37°N ,122°E 125°E)地质地球物理综合调查研究.2000
2)杨瑞琪等.南黄海南部坳陷石油地质条件与有利勘察方向.1989
3)任开江等.黄海北部海域航空磁测普查报告.1979
4)高彦书.中国近海前第三系含油气系统及勘探潜力分析.2000
5)叶加仁等.中国近海前第三系残余盆地分布及油气远景研究.2001
1)温珍河等.南黄海(35°N 37°N ,122°E 125°E)地质地球物理综合调查研究.2000
2)叶加仁等.中国近海第三系残余盆地分布及油气远景研究.2001
1)温珍河等.南黄海(35°N 37°N ,122°E 125°E)地质地球物理综合调查研究.2000
2)朱伟林等.海上含油气盆地富成藏体系地化、地质综合勘探技术成果.1999
1 沿海大陆架及毗邻海域油气石油地质志编写组编.中国石油地质志(第16卷上册).北京:石油工业出版社,1990.328
2 王万银.双界面模型重力场快速正反演问题.石油物探,1993,32(2):81～87
3 刘申叔,李上卿.东海油气地球物理勘探.北京:地质出版社,2001
2)杨瑞琪等.南黄海南部坳陷石油地质条件与有利勘察方向.1989
3)任开江等.黄海北部海域航空磁测普查报告.1979
4)高彦书.中国近海前第三系含油气系统及勘探潜力分析.2000
5)叶加仁等.中国近海前第三系残余盆地分布及油气远景研究.2001
1)温珍河等.南黄海(35°N 37°N ,122°E 125°E)地质地球物理综合调查研究.2000
2)叶加仁等.中国近海第三系残余盆地分布及油气远景研究.2001
1)温珍河等.南黄海(35°N 37°N ,122°E 125°E)地质地球物理综合调查研究.2000
2)朱伟林等.海上含油气盆地富成藏体系地化、地质综合勘探技术成果.1999
1 沿海大陆架及毗邻海域油气石油地质志编写组编.中国石油地质志(第16卷上册).北京:石油工业出版社,1990.328
2 王万银.双界面模型重力场快速正反演问题.石油物探,1993,32(2):81～87
3 刘申叔,李上卿.东海油气地球物理勘探.北京:地质出版社,2001
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