新疆三塘湖盆地牛东地区卡拉岗组火山旋回和期次的划分与对比
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摘要
以系统取心资料及其分析化验资料为基础,结合测井和地震资料,根据火山岩的岩性、电性、岩石化学等特征和不同岩性岩相的地震反射特征,将三塘湖盆地马朗凹陷牛东地区卡拉岗组火山岩地层划分为层、韵律、期次、亚旋回等不同单元。以期次(层组)作为该区火山岩地层划分对比的基本单元,这也是在地震剖面上能识别和连续追踪的基本或最小地层单位,并对该区火山岩地层进行了划分与对比。研究表明:该区卡拉岗组火山活动以裂隙式喷发为主,分布规律表现为层组的厚度、数目由西南向东北呈明显的减薄(少)趋势;牛东地区卡拉岗组已经揭示的火山岩厚度在1000 m以上,可以划分为8个火山期次,4个亚旋回。
Based on the systemic coring data and analysis test data,combined with well logging and seismic data,and according to the characteristics of lava lithology,electrical property,petrochemistry and so on,along with the seismic reverberation of different lithology and lithofacies,volcanic strata of Kalagang Formation in Niu-dong area in Malang sag of Santanghu basin can be divided into different units,such as layer,cyclothem,period,and sub-gyration.Regarding volcanic eruptible period as the basal unit of lava stratigraphic division and correlation,the lava stratigraphic division and correlation in this area has been done.The study indicates that fracture eruption is the main eruptible mode in Kalagang Formation.Volcanic distribution reveals that the thickness and number of the volcanic layer decrease distinctly from southwest to northeast.Kalagang Formation has the thickness of more than 1,000 meters and can be divided into eight sub-volcanic eruptible periods and four sub-gyrations.
Based on the systemic coring data and analysis test data,combined with well logging and seismic data,and according to the characteristics of lava lithology,electrical property,petrochemistry and so on,along with the seismic reverberation of different lithology and lithofacies,volcanic strata of Kalagang Formation in Niu-dong area in Malang sag of Santanghu basin can be divided into different units,such as layer,cyclothem,period,and sub-gyration.Regarding volcanic eruptible period as the basal unit of lava stratigraphic division and correlation,the lava stratigraphic division and correlation in this area has been done.The study indicates that fracture eruption is the main eruptible mode in Kalagang Formation.Volcanic distribution reveals that the thickness and number of the volcanic layer decrease distinctly from southwest to northeast.Kalagang Formation has the thickness of more than 1,000 meters and can be divided into eight sub-volcanic eruptible periods and four sub-gyrations.
引文
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[2]谢家莹.试论陆相火山岩区火山地层单位与划分[J].火山地质与矿产,1996,17(3-4):85-93.
[3]冀国盛,戴俊生,马欣本,等.金湖凹陷闵北地区阜一、二段火山岩地层划分与对比[J].石油大学学报:自然科学版,2002,26(4):5-8.
[4]黄玉龙,王璞?,门广田,等.松辽盆地营城组火山岩旋回和期次划分[J].吉林大学学报:地球科学版,2007,37(6):1183-1191.
[5]丁林,张进江,邓万明.藏北鱼鳞山新生代火山岩及风化壳复合堆积物的组成和时代[J].科学通报,2000,45(14):1476-1477.
[6]祝彦贺,颜耀敏,王英民,等.碎屑岩与火山岩混积岩系层序地层学研究初探[J].现代地质,2008,22(2):258-263.
[7]吴晓智,齐雪峰,唐勇,等.新疆北部石炭纪地层、岩相古地理与烃源岩[J].现代地质,2008,22(4):551-556.
[8]陈业全,李宝刚.塔里木盆地中部二叠系火山岩地层的划分与对比[J].石油大学学报:自然科学版,2004,28(6):6-10.
[9]郭振华,王璞,印长海.松辽盆地北部火山岩岩相与测井相关系研究[J].吉林大学学报:地球科学版,2006,36(2):208-211.
[10]王郑库,欧成华,李凤霞.火山岩储层岩性识别方法研究[J].国外测井技术,2007,22(1):9-11.
[11]丁秀春.测井响应在火成岩储层研究中的应用[J].特种油气藏,2003,10(1):69-72.
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