南海北部陆缘中生代沉积层序、对比和油气地质意义
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摘要
南海北部陆缘陆上粤中—粤东地区出露一系列的中生界,可以划分为15个Ⅲ级沉积层序。在毗邻海区的潮汕坳陷的地震剖面和LF35-1-1井也可以识别出12个Ⅲ级沉积层序。这些Ⅲ级层序组成了6个Ⅱ级层序和2个Ⅰ级层序,反映出由海向陆的环境变化过程。陆区和海区中生界在岩性、岩相以及层序地层等方面存在可对比性。陆区上地层-沉积特征以及模式可以作为模型应用于海区中生界相关研究,对南海北部中生界油气勘探具有指导意义。
The Mesozoic strata outcropped in the central-east part of Guangdong Province may divi-ded into 15 of Ⅲ rank sedimentary sequences,while there are 12 of Ⅲ rank sequences of Mesozoic identified in the seismic profiles and well LF35-1-1 in offshore Chaoshan depression in the north margin of South China Sea.The sequences including 6 of Ⅱ rank and 2 of Ⅰrank,reflect the environmental changing processes from sea to land.The lithography,sedimentary facies and sequence of the Mesozoic both outcropped in land and occurred offshore may correlate well.The characteristics of stratigraphy and sedimentation and its model based on the outcropped strata are helpful to study the related subjects of the Mesozoic offshore and can be a guide to petroleum exploration.
The Mesozoic strata outcropped in the central-east part of Guangdong Province may divi-ded into 15 of Ⅲ rank sedimentary sequences,while there are 12 of Ⅲ rank sequences of Mesozoic identified in the seismic profiles and well LF35-1-1 in offshore Chaoshan depression in the north margin of South China Sea.The sequences including 6 of Ⅱ rank and 2 of Ⅰrank,reflect the environmental changing processes from sea to land.The lithography,sedimentary facies and sequence of the Mesozoic both outcropped in land and occurred offshore may correlate well.The characteristics of stratigraphy and sedimentation and its model based on the outcropped strata are helpful to study the related subjects of the Mesozoic offshore and can be a guide to petroleum exploration.
引文
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[9]孟令顺,杜晓娟,刘万崧,等.中国南海北部潮汕坳陷NHC-1测线及邻区重磁场特征与地壳结构[J].吉林大学学报:地球科学版,2006,36(5):851-855.MENG Ling-shun,DU Xiao-juan,LIU Wan-song,etal.The characteristic of gravity-magnetic fields andcrust structure of NHC-1 survey line and its adjacentarea at Chaoshan depression in north of the SouthChina Sea[J].Journal of Jilin University:Earth Sci-ence Edition,2006,36(5):851-855.
[10]刘光鼎,宋海斌,张福勤.中国近海前新生代残留盆地初探[J].地球物理学进展,1999,14(3):1-8.LIU Guang-ding,SONG Hai-bin,ZHANG Fu-qin.A preliminary study of Chinese offshore Pre-Cenozoicresidual basins[J],Progress in Geophysics,1999,14(3):1-8.
[11]夏戡原,黄慈流.南海中生代特提斯期沉积盆地的发现与找寻中生代含油气盆地的前景[J].地学前缘,2000,7(3):227-238.XIA Kan-yuan,HUANG Ci-liu.The discovery ofMeso-Tethys sedimentary basins in the South ChinaSea and their oil and gas perspective[J].Earth Sci-ence Frontiers,2000,7(3):227-238.
[2]姚伯初,曾维军,陈艺中,等.南海北部陆缘东部中生代的地震反射特征[J].海洋地质与第四纪地质,1995,15(1):81-89.YAO Bo-chu,ZENG Wei-jun,CHEN Yi-zhong,et al.Seismic reflective characteristics of Mesozoic sedimentson the eastern continental margin in the north of theSouth China Sea[J].Marine Geology&QuaternaryGeology,1995,15(1):81-89.
[3]邵磊,尤洪庆,郝沪军,等.南海东北部中生界岩石学特征及沉积环境[J].地质论评,2007,53(2):164-169.SHAO Lei,YOU Hong-qing,HAO Hu-jun,et al.Petrology and depositional environments of Mesozoicstrata in the northeastern South China Sea[J].Geo-logical Review,2007,53(2):164-169.
[4]Vail P R.Seismic stratigraphy interpretation using se-quence stratigraphy.Part 1:seismic stratigraphy in-terpretation procedure[J].AAPG,1987,27(1):1-10.
[5]Gupta S,Cowie P.Processes and controls in the stra-tigraphic development of extensional basins[J].BasinRes,2000,12:185-194.
[6]曹荣龙,朱寿华.中国东南沿海及台湾中生代古构造体系[J].科学通报,1990,35(2):130-134.CAO Rong-long,ZHU Shou-hua.Mesozoic paleo-tec-tonic system in the southeastern coast and Taiwan ofChina[J].Chinese Science Bulletin,1990,35(2):130-134.
[7]郭令智,施央申,马瑞士.西太平洋中、新生代活动大陆边缘和岛弧构造的形成及演化[J].地质学报,1983,57(1):11-21.GUO Ling-zhi,SHI Yang-shen,MA Rui-shi.On theformation and evolution of the Mesozoic-Cenozoic ac-tive continental margin and island arc tectonics of theWestern Pacific Ocean[J].Acta Geologica Sinica,1983,57(1):11-21.
[8]李武显,周新民.中国东南部晚中生代俯冲带探索[J].高校地质学报,1995,2(5):164-169.LI Wu-xian,ZHOU Xin-min.Late Mesozoic subduc-tion zone of southeastern China[J].Geological Journalof China Universities,1995,5(2):164-169.
[9]孟令顺,杜晓娟,刘万崧,等.中国南海北部潮汕坳陷NHC-1测线及邻区重磁场特征与地壳结构[J].吉林大学学报:地球科学版,2006,36(5):851-855.MENG Ling-shun,DU Xiao-juan,LIU Wan-song,etal.The characteristic of gravity-magnetic fields andcrust structure of NHC-1 survey line and its adjacentarea at Chaoshan depression in north of the SouthChina Sea[J].Journal of Jilin University:Earth Sci-ence Edition,2006,36(5):851-855.
[10]刘光鼎,宋海斌,张福勤.中国近海前新生代残留盆地初探[J].地球物理学进展,1999,14(3):1-8.LIU Guang-ding,SONG Hai-bin,ZHANG Fu-qin.A preliminary study of Chinese offshore Pre-Cenozoicresidual basins[J],Progress in Geophysics,1999,14(3):1-8.
[11]夏戡原,黄慈流.南海中生代特提斯期沉积盆地的发现与找寻中生代含油气盆地的前景[J].地学前缘,2000,7(3):227-238.XIA Kan-yuan,HUANG Ci-liu.The discovery ofMeso-Tethys sedimentary basins in the South ChinaSea and their oil and gas perspective[J].Earth Sci-ence Frontiers,2000,7(3):227-238.
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