东营凹陷西部红层沉积期沉积体系及物源方向研究
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摘要
在对地质资料、地震资料及地球化学资料详细解剖的基础上,以东营凹陷西部红层沉积期构造演化阶段的划分及古地貌的恢复为切入点,通过对物源、沉积体系的系统研究,明确了东营凹陷西部红层沉积期物源方向及沉积体系的时空演化特征。研究认为:东营凹陷西部红层沉积期可以划分为孔一段时期和沙四下亚段时期两个构造演化阶段;红层沉积前盆地整体呈现四面环凸、西高东低、西部地形整体较为平缓的古地貌格局,古地貌的时空差异影响并控制了东营凹陷西部红层层系的沉积。东营凹陷西部红层沉积期存在西北无棣—滨县凸起和南部鲁西隆起两大远物源体系和平南断层上升盘近物源体系,红层沉积后期,平南断层上升盘近物源体系消失。东营凹陷西部红层沉积期主要发育了冲积扇、辫状河、湖泊及滩坝等沉积体系,盆地北部还发育了近岸水下扇沉积体系;古地貌、古物源及古气候的变迁使得沉积体系的时空展布表现出继承性与差异性并存的特征。
Based on the detailed analysis of geological data,seismic data and geochemical data,through the method of the dividing of structure evolution stages and recovery of palaeogeomorphic,combined with provenance sedimentary system,the paper studied the temporal and spatial evolution features of sedimentary system and provenance orientation in the red-bed sedimentary period in the western area of Dongying Sag.The period in the western area of Dongying Sag was divided into the 1st of Kongdian Formation and the lower part of the 4th member of Shahejie Formation.Before deposition of the 1st member of Kongdian Formation,the Luxi uplift,Guangrao bump,Chenjiazhuang bump,Binxian bump and Wudi bump were formed.The main faults are Chennan Fault,Binnan Fault,Yangxin Fault,Shicun Fault and Gaoqing-Pingnan Fault and so on.The whole basin presents the palaeogeomorphic of bumps around,east low,and west high and flat terrain in the west.The provenance of the western area of Dongying Sag in the early stage of Kongdian-Shasi is mainly from the northwest and the south orientations.There are two further provenance systems of Wudi to Binxian bump,Luxi uplift,and one provenance system of Pingnan Fault.There are sedimentary systems such as alluvial fan-braided river-lake system,alluvial fan-alluvial plain-lake system,lake-beach bar and subaqueous fan-lake system.The changes of palaeogeomorphic,provenance and ancient climate influence the temporal and spatial evolution of the sedimentary system with the characteristics of inheritance and difference.
Based on the detailed analysis of geological data,seismic data and geochemical data,through the method of the dividing of structure evolution stages and recovery of palaeogeomorphic,combined with provenance sedimentary system,the paper studied the temporal and spatial evolution features of sedimentary system and provenance orientation in the red-bed sedimentary period in the western area of Dongying Sag.The period in the western area of Dongying Sag was divided into the 1st of Kongdian Formation and the lower part of the 4th member of Shahejie Formation.Before deposition of the 1st member of Kongdian Formation,the Luxi uplift,Guangrao bump,Chenjiazhuang bump,Binxian bump and Wudi bump were formed.The main faults are Chennan Fault,Binnan Fault,Yangxin Fault,Shicun Fault and Gaoqing-Pingnan Fault and so on.The whole basin presents the palaeogeomorphic of bumps around,east low,and west high and flat terrain in the west.The provenance of the western area of Dongying Sag in the early stage of Kongdian-Shasi is mainly from the northwest and the south orientations.There are two further provenance systems of Wudi to Binxian bump,Luxi uplift,and one provenance system of Pingnan Fault.There are sedimentary systems such as alluvial fan-braided river-lake system,alluvial fan-alluvial plain-lake system,lake-beach bar and subaqueous fan-lake system.The changes of palaeogeomorphic,provenance and ancient climate influence the temporal and spatial evolution of the sedimentary system with the characteristics of inheritance and difference.
引文
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[26]李丕龙.陆相断陷盆地油气地质与勘探[M].北京:石油工业出版社,2006:
[2]贾红义,于建国,王金铎.济阳坳陷深层构造层序划分[J].油气地球物理,2007,5(3):45-50.
[3]崔建国.东营凹陷南斜坡西段孔一—沙四下亚段红层成藏特征[J].中国石油大学胜利学院学报,2011,25(1):4-6.
[4]操应长,王健,高永进,等.济阳坳陷东营凹陷古近系红层-膏盐层沉积特征及模式[J].古地理学报,2011,13(4):375-386.
[5]黎赵红.东营凹陷深层层序地层学研究[J].内蒙古石油化工,2006,12:178-181.
[6]张升平.东营凹陷新生代构造转型及其控油意义[J].大地构造与成矿学,2007,31(3):281-287.
[7]徐磊,操应长,王艳忠,等.东营凹陷古近系膏盐岩成因模式及其与油气藏的关系[J].中国石油大学学报:自然科学版,2008,32(3):30-36.
[8]杨勇强,邱隆伟,孙宝强.陆相“红层”等时地层对比新方法在东营凹陷南斜坡的应用[J].中国石油大学学报:自然科学版,2012,36(2):16-21.
[9]王健,操应长,刘惠民,等.东营凹陷沙四下亚段沉积环境特征及沉积充填模式[J].沉积学报,2012,30(4):274-282.
[10]吴智平,李伟,任拥军,等.济阳坳陷中生代盆地演化及其与新生代盆地叠合关系探讨[J].地质学报,2003,77(2):281-286.
[11]李伟,吴智平,周瑶琪.济阳坳陷中生代地层剥蚀厚度、原始厚度恢复及原型盆地研究[J].地质论评,2005,51(5):507-516.
[12]李伟,吴智平,刘华.中、新生代渤海湾盆地区演化与上古生界煤成气成藏[J].油气地质与采收率,2009,16(1):13-16.
[13]李伟,吴智平,赵文栋.渤海湾盆地区燕山期构造特征与盆地转型[J].地球物理学进展,2010,25(6):2068-2077.
[14]朱筱敏.沉积岩石学[M].北京:石油工业出版社,2008:467.
[15]冯斌,赵峰华,王淑华.地震分频解释技术在河道砂预测中的应用[J].地球科学进展,2012,27(5):510-514.
[16]岳艳.浅谈重矿物物源分析方法[J].科技情报开发与经济,2010,20(12):138-139.
[17]刘惠民.东营凹陷滨南-利津地区古近系沙四上亚段物源分析与沉积特征[J].现代地质,2010,24(2):321-328.
[18]刘群明,陈开远,王键,等.柴达木盆地三湖坳陷第四系重矿物物源分析[J].现代地质,2011,25(2):315-321.
[19]山东省地质矿产局.山东省区域地质志[M].北京:地质出版社,1991:20-25.
[20]Bhatia M R.Plate tectonics and geochemical composition of sand-stones[J].Journal of Geology,1983,91:611-627.
[21]Rollinson H R.Using Geochemical Data:Evaluation,Presenta-tion,Interpretation[M].Harlow,Essex,England:LongmanScientific and Technical,1993:1-125.
[22]操应长,王艳忠,徐涛玉,等.特征元素比值在沉积物物源分析中的应用——以东营凹陷王58井区沙四上亚段研究为例[J].沉积学报,2007,25(2):230-238.
[23]杨守业,李从先,Lee C B.中韩主要河流的REE地球化学及物源示踪意义[M]//中国矿物岩石地球化学学会.中国矿物岩石地球化学学会第十届学术年会论文集.武汉:中国矿物岩石地球化学学会,2005:341.
[24]吴智平,马在平,周瑶琪.济源盆地三叠系与侏罗系界线地层沉积相及元素地球化学特征[J].石油大学学报:自然科学版,2002,26(3):20-25.
[25]张世奇,纪友亮.东营凹陷早第三纪古气候变化对层序发育的控制[J].石油大学学报:自然科学版,1998,22(6):26-30.
[26]李丕龙.陆相断陷盆地油气地质与勘探[M].北京:石油工业出版社,2006:
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