南海中建南盆地地震地层分析
|
摘要
中建南盆地是发育于南海西部陆缘的大型新生代沉积盆地,勘探程度较低,综合地球物理调查表明盆地内具有形成油气圈闭的生储盖条件,有良好的油气勘探前景。利用多道地震调查资料和周边地区的地质资料对盆地进行了地震地层分析,解释了5个地震反射界面,划分出3个地震超层序和5个地震层序,并进行了较为详细的描述;对各地震层序的地质属性进行了分析探讨,认为盆地发育有全新统一上新统、上中新统、中中新统一下中新统、渐新统一上始新统、中始新统一古新统等5套地层;在地震相划分和沉积相分析的基础上,对各层序的沉积特征和沉积发育史进行了分析,认为盆地早期为陆相沉积,逐渐发展为现今的浅海—半深海相沉积。
Zhongjiannan basin,a large Cenozoic sedimentary basin devel- oped in the west continental margin of South China Sea,is low in exploration degree.The integrative geophysical survey indicates that the basin has a good exploration potential for its favorable source-reservoir-cap conditions for forming traps.The multi-chan- nel seismic data and geologic survey data surrounding the basin were used for seismic strata analysis.5 seismic reflection interfaces, 3 seismic super-sequences,and 5 seismic sequences were divided and described in detail.Geologic attributes of seismic sequences was an- alyzed and discussed.It was found out that there are 5 sets of stra- tum in the basin:Holocene-Pliocene,Upper Miocene,Middle Mio- cene-Lower Miocene,Oligocene-Upper Eocene,and Middle Eocene- Paleocene.Based on the classification of seismic facies and the anal- ysis Of sedimentary facies,the sedimentary characteristics and the depositional history of seismic sequenees were analyzed.The results show that the sedimentary environment of the basin is continent deposit at early stage and shallow sea-bathyal fades nowadays.
Zhongjiannan basin,a large Cenozoic sedimentary basin devel- oped in the west continental margin of South China Sea,is low in exploration degree.The integrative geophysical survey indicates that the basin has a good exploration potential for its favorable source-reservoir-cap conditions for forming traps.The multi-chan- nel seismic data and geologic survey data surrounding the basin were used for seismic strata analysis.5 seismic reflection interfaces, 3 seismic super-sequences,and 5 seismic sequences were divided and described in detail.Geologic attributes of seismic sequences was an- alyzed and discussed.It was found out that there are 5 sets of stra- tum in the basin:Holocene-Pliocene,Upper Miocene,Middle Mio- cene-Lower Miocene,Oligocene-Upper Eocene,and Middle Eocene- Paleocene.Based on the classification of seismic facies and the anal- ysis Of sedimentary facies,the sedimentary characteristics and the depositional history of seismic sequenees were analyzed.The results show that the sedimentary environment of the basin is continent deposit at early stage and shallow sea-bathyal fades nowadays.
引文
1陈玲．南海中建南盆地构造样式分析[J]．海洋地质与第四纪地质，2006，26(1)：53～56
2姚伯初，曾维军，Hayes D E，等．中美合作调研南海地质专报[M]．武汉：中国地质大学出版社，1994．141～196
3姚伯初．南海新生代的构造演化与沉积盆地[J]．南海地质研究，1998(10)：1～15
4万玲，吴能友，姚伯初，等．南沙海域新生代构造运动特征及成因探讨[J]．南海地质研究，2003(14)：8～15
5姚伯初，邱燕，李唐根．南海西缘—万安断裂的走滑特征及其构造意义[A]．姚伯初．南海西部海域地质构造特征和新生代沉积[C]．北京：地质出版社，1999．45～53
6王衍棠，陈玲．南海中建南盆地速度资料分析与应用[J]．热带海洋学报，2006，25(5)：49～55
7李正文，赵志超．地震勘探资料解释[M]．北京：地质出版社，1988．38～241
8崔炳富，牟中．利用地震层速度进行定量岩性预测及在塔西南地区的应用[J]．石油地球物理勘探，2002，37 (增刊)：61～65
9陆基孟．地震勘探原理(下册)[M]．东营：石油大学出版社，2001．242～261
2姚伯初，曾维军，Hayes D E，等．中美合作调研南海地质专报[M]．武汉：中国地质大学出版社，1994．141～196
3姚伯初．南海新生代的构造演化与沉积盆地[J]．南海地质研究，1998(10)：1～15
4万玲，吴能友，姚伯初，等．南沙海域新生代构造运动特征及成因探讨[J]．南海地质研究，2003(14)：8～15
5姚伯初，邱燕，李唐根．南海西缘—万安断裂的走滑特征及其构造意义[A]．姚伯初．南海西部海域地质构造特征和新生代沉积[C]．北京：地质出版社，1999．45～53
6王衍棠，陈玲．南海中建南盆地速度资料分析与应用[J]．热带海洋学报，2006，25(5)：49～55
7李正文，赵志超．地震勘探资料解释[M]．北京：地质出版社，1988．38～241
8崔炳富，牟中．利用地震层速度进行定量岩性预测及在塔西南地区的应用[J]．石油地球物理勘探，2002，37 (增刊)：61～65
9陆基孟．地震勘探原理(下册)[M]．东营：石油大学出版社，2001．242～261
版权所有：© 2023 中国地质图书馆 中国地质调查局地学文献中心