北黄海盆地东部坳陷中新生代构造演化
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摘要
在最新二维地震资料解释的基础上,对北黄海盆地东部坳陷的重要不整合面进行了研究,共识别出了4个重要不整合面;利用声波时差法和构造横剖面法,恢复了两期重要不整合面的剥蚀厚度;同时根据重磁资料及精细地震解释,对北黄海盆地东部坳陷的断裂特征作出了初步的研究,分析了主要断裂的形成期次及活动时间。最终,结合地层的分布特征及钻井资料,将北黄海盆地东部坳陷的构造演化史分为5个阶段。
The east depression of North Yellow Sea is situated in the east of the North Yellow Sea, a low degree of exploration Meso-Cenozoic sedimentary basin, which develops upon the base of the Sino-Korea Para platform. The latest 2D seismic data indicate that the east depression of North Yellow Sea develops 4 significant unconformities: the unconformity between the Jurassic and Cretaceous, the one between the Mesozoic and Cenozoic, the one inside the Oligocene and the one between the Neogene and Paleogene. By using sonic velocity data and the change ratio of the layer thickness, the paper restored the erosion thickness of the two unconformities. The fault system of the east depression of North Yellow Sea dominantly trends northeast or northwest.The analyses on these faults indicated that the fault activities can be divided into three stages:the late Jurassic-early Cretaceous, the Eocene and Neogene. Finally, combined with the analysis of stratum distribution and well data, the structural evolution of the east depression of North Yellow Sea can be approximately divided into five stages: sag depression in late Jurassic-early Cretaceous, thermal upwelling in late Cretaceous-Paleocene, extensional fault depression in the Paleogene, compressed in late Oligocene-early Neogene and thermal subsiding in the Neogene.
The east depression of North Yellow Sea is situated in the east of the North Yellow Sea, a low degree of exploration Meso-Cenozoic sedimentary basin, which develops upon the base of the Sino-Korea Para platform. The latest 2D seismic data indicate that the east depression of North Yellow Sea develops 4 significant unconformities: the unconformity between the Jurassic and Cretaceous, the one between the Mesozoic and Cenozoic, the one inside the Oligocene and the one between the Neogene and Paleogene. By using sonic velocity data and the change ratio of the layer thickness, the paper restored the erosion thickness of the two unconformities. The fault system of the east depression of North Yellow Sea dominantly trends northeast or northwest.The analyses on these faults indicated that the fault activities can be divided into three stages:the late Jurassic-early Cretaceous, the Eocene and Neogene. Finally, combined with the analysis of stratum distribution and well data, the structural evolution of the east depression of North Yellow Sea can be approximately divided into five stages: sag depression in late Jurassic-early Cretaceous, thermal upwelling in late Cretaceous-Paleocene, extensional fault depression in the Paleogene, compressed in late Oligocene-early Neogene and thermal subsiding in the Neogene.
引文
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徐贵忠,周瑞,闫臻,佘宏全,王艺芬,杨茂森,李兵.2001.论胶东地区中生代岩石圈减薄的证据及其动力学机制.大地构造与成矿学,25(4):368-380.
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朱光,宋传中,王道轩.2001.郯庐断裂带走滑时代的40Ar/39Ar年代学研究及其构造意义.中国科学(D辑),31(3):250-256.
朱夏,徐旺.1990.中国新生代沉积盆地构造发展述略.北京:石油工业出版社,1-6.
Kim C S,徐志成.1992.朝鲜周围海域的地震地层学和地质构造.海洋地质译丛,(3):1-8.
Magara K.1976.Thickness of removed sediments paleoporepressure and paleotemperature southwestern part of Western Canada Basin.AAPG,60:554-565.
Massoud M S,Scott A C and Killops S D.1991.Oil sourcerock potential of the lacustrine Jurassic Sim Uuju forma-tion,West Korea Bay basin.Part I:Oil source rock correla-tion and environment of deposition.Journal of PetroleumGeology,14(4):365-386.
Massoud MS,Scott AC and Kilops S D.1993.Oil source rockpotential of the lacustrine Jurassic Sim Uuju Formation,West Korea Bay Basin.Part II:Nacre of the organic matterand hydrocarbon-generation history.Journal of PetroleumGeology,16(3):265-284.
郭兴伟,施小斌,丘学林,吴智平,杨小秋,肖尚斌.2007.渤海湾盆地新生代沉降特征及其动力学机制探讨.大地构造与成矿学,31(3):273-280.
李德生.2002.中国含油气盆地构造学.北京:石油工业出版社,15-29,503-518.
李廷栋,莫杰.2002.黄海地质构造与油气资源.海洋地质动态,18(11):4-7.
李文勇,李东旭,王后金.2006.北黄海盆地构造几何学研究新进展.地质力学学报,12(1),12-22.
李文勇,李东旭,夏斌,白志琳,王嘹亮,陈玲,曹代勇,王信国.2006.北黄海盆地构造演化特征分析.现代地质,20(2),268-276.
牟中海,陈志勇,陆延清,由福报,李德旗.2000.柴达木盆地北缘中生界剥蚀厚度恢复.石油勘探与开发,27(1)35-37.
丸山茂德,濑野淑三.1987.日本列岛周围的板块相对运动和造山运动.国外地质,(3):1-9.
万天丰,朱鸿,赵磊,林建平,程捷,陈进.1996.郯庐断裂带的形成与演化综述.现代地质,l0(2):159-168.
吴根耀,马力,陈焕疆,徐克定.2003.苏皖地块构造演化、苏鲁造山带形成及其耦合的盆地发育.大地构造与成矿学,27(4):337-353.
吴智平,侯旭波,李伟.2007.华北东部地区中生代盆地格局及演化过程探讨.大地构造与成矿学,31(4):385-399.
徐贵忠,周瑞,闫臻,佘宏全,王艺芬,杨茂森,李兵.2001.论胶东地区中生代岩石圈减薄的证据及其动力学机制.大地构造与成矿学,25(4):368-380.
余和中,李玉文,韩守华,易万霞.2001.松辽盆地古生代构造演化.大地构造与成矿学,25(4):389-396.
朱光,宋传中,王道轩.2001.郯庐断裂带走滑时代的40Ar/39Ar年代学研究及其构造意义.中国科学(D辑),31(3):250-256.
朱夏,徐旺.1990.中国新生代沉积盆地构造发展述略.北京:石油工业出版社,1-6.
Kim C S,徐志成.1992.朝鲜周围海域的地震地层学和地质构造.海洋地质译丛,(3):1-8.
Magara K.1976.Thickness of removed sediments paleoporepressure and paleotemperature southwestern part of Western Canada Basin.AAPG,60:554-565.
Massoud M S,Scott A C and Killops S D.1991.Oil sourcerock potential of the lacustrine Jurassic Sim Uuju forma-tion,West Korea Bay basin.Part I:Oil source rock correla-tion and environment of deposition.Journal of PetroleumGeology,14(4):365-386.
Massoud MS,Scott AC and Kilops S D.1993.Oil source rockpotential of the lacustrine Jurassic Sim Uuju Formation,West Korea Bay Basin.Part II:Nacre of the organic matterand hydrocarbon-generation history.Journal of PetroleumGeology,16(3):265-284.
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