渤海海域黄河口凹陷渤中29-6构造火山岩锆石U-Pb年龄及其地质意义
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摘要
为了厘定渤海海域黄河口凹陷北部渤中29-6构造钻遇的90.5m火山岩系地层层位,对该套火山岩进行了系统的岩石学、锆石U-Pb定年分析。薄片结果表明,该套火山岩可分为3段,自上而下分别是顶部玄武岩(2 880.5～2 910.5m)、中部煌斑岩(2 910.5～2 959.5m)和底部凝灰岩(2 959.5～2 971m)。锆石U-Pb年龄结果显示,中部煌斑岩和底部凝灰岩均形成于早白垩世时期,地层年龄晚于124Ma,而顶部玄武岩形成于新生代岩浆活动,地层年龄晚于45.2Ma,结合玄武岩上部和玄武岩中泥岩的古生物分析结果,认为该套玄武岩指示了沙河街组三段沉积期的岩浆喷出事件。本研究落实了渤中29-6构造底部连续钻遇的火山岩系地层实为中生界、新生界2套不同时期的火山岩系,对进一步理解、认识黄河口凹陷的中生代、新生代火山活动及相应的火山岩油气勘探具有重要意义。
Petrology and zircon U-Pb geochronology studies were conducted in order to determine the stratigraphic position of the 90.5 mthick volcanic rocks on the Bozhong 29-6 Structure in the Huanghekou Sag,Bohai Sea.Thin sections show that the suit of the volcanic rocks can be divided into three sections from top to bottom:the basalts at the top(2 880.5～2 910.5 m),the lamprophyres in the middle(2 910.5～2 959.5 m),and the tuff on the bottom(2 959.5～2 971 m).The zircon U-Pb ages suggest that the lamprophyres and the tuff were formed in Cretaceous after 124 Ma,while the basalts formed after 45.2 Ma by Cenozoic magmatism.Combined with the paleontological evidence from microfossils in the mudstone intercalations or on the top of the basalts,we defined that the basalts erupted during the stage while the 3 rd Member of the Shahejie Formation was deposited.This study identified the Mesozoic and Cenozoic volcanic activities on the Bozhong 29-6 structure,and is of great significance for understanding the Mesozoic and Cenozoic magmatism and oil and gas exploration in the volcanic basin in the Huanghekou Sag.
Petrology and zircon U-Pb geochronology studies were conducted in order to determine the stratigraphic position of the 90.5 mthick volcanic rocks on the Bozhong 29-6 Structure in the Huanghekou Sag,Bohai Sea.Thin sections show that the suit of the volcanic rocks can be divided into three sections from top to bottom:the basalts at the top(2 880.5～2 910.5 m),the lamprophyres in the middle(2 910.5～2 959.5 m),and the tuff on the bottom(2 959.5～2 971 m).The zircon U-Pb ages suggest that the lamprophyres and the tuff were formed in Cretaceous after 124 Ma,while the basalts formed after 45.2 Ma by Cenozoic magmatism.Combined with the paleontological evidence from microfossils in the mudstone intercalations or on the top of the basalts,we defined that the basalts erupted during the stage while the 3 rd Member of the Shahejie Formation was deposited.This study identified the Mesozoic and Cenozoic volcanic activities on the Bozhong 29-6 structure,and is of great significance for understanding the Mesozoic and Cenozoic magmatism and oil and gas exploration in the volcanic basin in the Huanghekou Sag.
引文
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[18]郭颖,王粤川,韦阿娟,等.潜山内幕火山岩储层特征及控制因素---以渤海海域秦皇岛30A地区白垩系为例[J].沉积学报,2017,35(2):343-357.
[19]胡志伟,徐长贵,杨波,等.渤海海域蓬莱9-1油田花岗岩潜山储层成因机制及石油地质意义[J].石油学报,2017,38(3):274-285.
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[22]潘文静,刘士磊,王清斌,等.渤海海域黄河口南斜坡火山岩地层划分及对比[J].地层学杂志,2019,43(2).(待刊).
[23]朱红涛,刘依梦,王永利,等.渤海湾盆地黄河口凹陷BZ34-9取代火山岩三维刻画及火山喷发期次[J].地球科学---中国地质大学学报,2014,39(9):1309-1316.
[24]郭涛,杨波,陈磊,等.岩浆岩三维精细刻画---黄河口凹陷南斜坡渤中34-9油田的发现[J].中国海上油气,2016,28(2):71-77.
[25]王昕,柴永波,姚佳,等.渤中34构造古近系受玄武岩控制砂岩储层成岩相展布特征及发育模式[J].中国海上油气,2017,29(2):9-17.
[26]王维,杨香华,叶加仁,等.玄武岩发育区砂岩储层特征及控制因素:渤海南部BZ34-9区与KL6区块对比[J].地球科学---中国地质大学学报,2017,42(4):570-586.
[27]廖新武,尹楠鑫.莱州湾凹陷垦利10-1油田火山岩识别与分布预测[J].合肥工业大学学报,2018,41(5):683-688.
[28]周心怀,胡志伟,韦阿娟,等.渤海海域蓬莱9-1大型复合油田潜山发育演化及其控藏作用[J].大地构造与成矿学,2015,39(4):680-690.
[29]杨波,牛成民,孙和风,等.莱州湾垦利10-1亿吨级油田发现的意义[J].中国海上油气,2011,23(5):148-153.
[30]何海清,王兆云,韩品龙.华北地区构造演化对渤海湾油气形成和分布的控制[J].地质学报,1998,72(4):313-322.
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[33]Cawood P A,Hawkesworth C J,Dhuime B.Detrital Zircon record and tectonic setting[J].Geology,2012,40(10):875-878.
[34]韩少甲,赵俊峰,刘池洋,等.渤海海域庙西凹陷古近纪沙三段沉积期原盆面貌恢复[J].地质论评,2014,60(2):339-347.
[2]谷俐,戴塔根,范蔚茗.渤海周边中、新生代火山作用[J].大地构造与成矿,2000,24(1):9-17.
[3]刘立,谢文彦,李德生,等.辽河盆地凹陷新生代火山岩裂缝与油气[J].海洋石油,2003,23(3):10-15.
[4]杨默函,侯贵廷,史謌.辽河盆地东部凹陷新生代火山岩K-Ar地质年代学及其地质意义[J].北京大学学报:自然科学版,2006,42(2):184-191.
[5]杜景霞,肖龙,周海民,等.渤海湾盆地南堡凹陷新生代火山岩地球化学特征及成因[J].桂林工学院学报,2008,28(2):157-166.
[6]张超,马昌前,廖群安,等.渤海湾黄骅盆地晚中生代-新生代火山岩地球化学、岩石成因及构造体制转换[J].岩石学报,2009,25(5):1159-1177.
[7]刘中云,肖尚斌,姜在兴.渤海湾盆地第三系火山岩及其成因[J].石油大学学报,2001,25(1):22-26.
[8]韩宗珠,彦彬,唐璐璐.渤海及周边地区中、新生代构造演化与火山活动[J].海洋湖沼通报,2008(2):30-36.
[9]金春爽,乔德武,淡伟宁.渤海湾盆地中、新生代火山岩分布及油气藏特征[J].石油与天然气地质,2012,33(1):19-29.
[10]白冰,王清斌,赵国祥,等.蓬莱9-1构造新生代构造演化:磷灰石裂变径迹证据[J].石油学报,2015,36(9):1098-1107.
[11]周心怀,黄雷,王昕,等.渤海蓬莱9-1中生代花岗岩体岩石地球化学特征及其区域构造意义[J].岩石学报,2016,32(6):1839-1850.
[12]赵国祥,王清斌,杨波,等.渤海海域庙西北凸起中生代花岗岩LA-ICP-MS锆石U-Pb测年及其地质意义[J].地质通报,2017,36(7):1204-1217.
[13]叶涛,韦阿娟,高坤顺,等.渤海海域中生界火山岩测井-地质岩性综合识别方法[J].中国海上油气,2016,28(1):48-53.
[14]叶涛,韦阿娟,祝春荣,等.渤海海域基底“改造型火山机构”特征及油气成藏意义[J].石油学报,2016,37(11):1370-1380.
[15]李建平,周心怀,王国芝.蓬莱9-1潜山岩性组成及其对储层发育的控制[J].地球科学---中国地质大学学报,2014,39(10):1521-1530.
[16]冯冲,王清斌,王立红,等.莱州湾凹陷垦利16-A构造火山岩岩性特征与测井识别[J].断块油气田,2018,25(3):316-321.
[17]冯冲,王清斌,杨波,等.渤海海域蓬莱9-1构造潜山中生代花岗岩元素地球化学特征及其地质意义[J].地质学报,2016,90(4):752-768.
[18]郭颖,王粤川,韦阿娟,等.潜山内幕火山岩储层特征及控制因素---以渤海海域秦皇岛30A地区白垩系为例[J].沉积学报,2017,35(2):343-357.
[19]胡志伟,徐长贵,杨波,等.渤海海域蓬莱9-1油田花岗岩潜山储层成因机制及石油地质意义[J].石油学报,2017,38(3):274-285.
[20]刘士磊,潘文静,高曦龙,等.渤海海域中生代地层特征及其对比关系[J].地层学杂志,2017,41(4):411-420.
[21]Du X F,Xu C G,Pang X J,et al.Quantitative Reconstruction of Source-to-sink Systems of the First and Second Members of the Shahejie Formation of the Eastern Shijiutuo Uplift,Bohai Bay Basin,China[J].Interpretation,2017,5(4):85-102.
[22]潘文静,刘士磊,王清斌,等.渤海海域黄河口南斜坡火山岩地层划分及对比[J].地层学杂志,2019,43(2).(待刊).
[23]朱红涛,刘依梦,王永利,等.渤海湾盆地黄河口凹陷BZ34-9取代火山岩三维刻画及火山喷发期次[J].地球科学---中国地质大学学报,2014,39(9):1309-1316.
[24]郭涛,杨波,陈磊,等.岩浆岩三维精细刻画---黄河口凹陷南斜坡渤中34-9油田的发现[J].中国海上油气,2016,28(2):71-77.
[25]王昕,柴永波,姚佳,等.渤中34构造古近系受玄武岩控制砂岩储层成岩相展布特征及发育模式[J].中国海上油气,2017,29(2):9-17.
[26]王维,杨香华,叶加仁,等.玄武岩发育区砂岩储层特征及控制因素:渤海南部BZ34-9区与KL6区块对比[J].地球科学---中国地质大学学报,2017,42(4):570-586.
[27]廖新武,尹楠鑫.莱州湾凹陷垦利10-1油田火山岩识别与分布预测[J].合肥工业大学学报,2018,41(5):683-688.
[28]周心怀,胡志伟,韦阿娟,等.渤海海域蓬莱9-1大型复合油田潜山发育演化及其控藏作用[J].大地构造与成矿学,2015,39(4):680-690.
[29]杨波,牛成民,孙和风,等.莱州湾垦利10-1亿吨级油田发现的意义[J].中国海上油气,2011,23(5):148-153.
[30]何海清,王兆云,韩品龙.华北地区构造演化对渤海湾油气形成和分布的控制[J].地质学报,1998,72(4):313-322.
[31]Ludwig K R.Isoplot 3.0,ageochronological toolkit for Microsoft Excel[J].Berkeley Geochronology Center,Special Publication,2003,4:1-70.
[32]Campbel I H,Reiners P W,Allen C M,et al.He-Pb double dating of detrital zircons from the Ganges and Indus rivers:implication for quantifying sediment recycling and provenance studies[J].Earth and Planetary Science Letters,2005,237:402-432.
[33]Cawood P A,Hawkesworth C J,Dhuime B.Detrital Zircon record and tectonic setting[J].Geology,2012,40(10):875-878.
[34]韩少甲,赵俊峰,刘池洋,等.渤海海域庙西凹陷古近纪沙三段沉积期原盆面貌恢复[J].地质论评,2014,60(2):339-347.