| 509 | 0 | 8 |
| 下载次数 | 被引频次 | 阅读次数 |
通过分析鄂尔多斯盆地延长组长10—长8段沉积期地层发育特征、碎屑充填结构变化、沉积相展布，并结合岩石学、元素地球化学分析，提出受秦岭造山作用的影响，长10—长8段沉积期为鄂尔多斯盆地强烈沉降成盆期、台-盆发展转换期、气候环境转折期：(1)明确长10段沉积期发生了显著的沉降作用，沉降中心位于盆地西南环县—镇原—正宁一带，不对称性显著，粗碎屑快速充填，厚度巨大，长9段、长8段沉积期是构造平稳阶段气候控制为主的沉积，沉积物粒度相对较细；(2)提出长10期沉降作用结束了晚古生代稳定的地台性质的沉积，开始了内陆盆地演化阶段，在碎屑沉积物的成熟度、供屑原岩特征等方面均留下了造山带构造活动影响下的台-盆转化与盆地演化的示踪信息；(3)长10段沉积期结束了晚二叠世以来长期的干旱炎热的气候，经历了半干旱、半潮湿向温暖湿润气候转变；(4)长10—长8段构成了延长组下部沉降-充填旋回，该旋回在沉降中心厚1 000～1 550 m,具有粗碎屑快速充填、颗粒向上变细的特点。本研究深化了鄂尔多斯盆地形成、演化的认识。
Abstract：By analyzing the stratigraphic development characteristics, clastic filling structure and sedimentary facies distribution of the Chang 10-Chang 8 sedimentary period of the Yanchang Formation in the Ordos Basin, combined with petrological and geochemical analysis, it is proposed that affected by the Qinling orogeny, Ordos Basin strongly subsided, transformed from platform to basin, and climate shifted sharply at the Chang 10-Chang 8 sedimentary period:(1) It is cheared that significant subsidence occurred during the sedimentary period of the Chang 10, and the subsidence center is located in Huanxian-Zhenyuan-Zhenning area, the southwestern basin, with significant asymmetry rapidly filled by thick coarse clastic. Chang 9 and Chang 8 member are stable deposits dominated by climate in a stable tectonic environment, with relatively fine sediment.(2) It is proposed that the Chang 10 subsidence ended the stable platform during the late Paleozoic and began the evolution of inland basin. The platform-basin transformation and basin evolution under the influence of orogenic tectonic activities have left traces in the maturity of clastic sediments and the characteristics of detrital protoliths.(3)The sedimentary period of Chang 10 member ended the long-term arid and hot climate since the Late Permian, and began the transition to semi-arid and semi-humid, and to warm and humid climate.(4) The Chang 10-Chang 8 members constitute a subsidence-filling cycle of lower Yanchang Formation, about 1 000～1 550 m thick in the subsidence center. This study furthers the understanding of the formation and evolution of the Ordos Basin.
[1] 张抗.鄂尔多斯断块构造和资源[M].西安：陕西科学技术出版社，1989.
[2] 刘池洋，赵红格，桂小军，等.鄂尔多斯盆地演化-改造的时空坐标及其成藏(矿)响应[J].地质学报，2006,80(5):617- 638.LIU C Y,ZHAO H G,GUI X J,et al.Space-time coordinate of the evolution and reformation and mineralization response in Ordos Basin[J].Acta Geologica Sinica,2006,80(5):617- 638.
[3] 何登发.中国多旋回叠合沉积盆地的形成演化、地质结构与油气分布规律[J].地学前缘，2022,29(6):24-59.HE D F.Multi-cycle superimposed sedimentary basins in China:Formation,evolution,geologic framework and hydro-carbon occurrence[J].Earth Science Frontiers,2022,29(6):24-59.
[4] 邓秀芹，张文选，李文厚，等.鄂尔多斯盆地中：上三叠统沉积充填特征与延长组低品位含油气系统的关系[J].西北大学学报(自然科学版),2019,49(4):622-632.DENG X Q,ZHANG W X,LI W H,et al.The relationship between depositional filling architecture and the low grade petroleum system,Middle-Upper Triassic Yanchang Formation in Ordos Basin[J].Journal of Northwest University (Natural Science Edition),2019,49(4):622-632.
[5] 邓秀芹，姚泾利，胡喜锋，等.鄂尔多斯盆地延长组超低渗透岩性油藏成藏流体动力系统特征及其意义[J].西北大学学报(自然科学版),2011,41(6):1044-1051.DENG X Q,YAO J L,HU X F,et al.Characteristics and geological significance of hydrodynamic system on ultra-low permeability reservoir of Yanchang formation in Ordos Basin[J].Journal of Northwest University(Natural Science Edition),2011,41(6):1044-1051.
[6] 尚婷，王斌，杨庆坤，等.孔隙演化定量分析及在盆地模拟中的应用：以鄂尔多斯盆地合水地区长8油层为例[J].西北大学学报(自然科学版),2023,53(5):843-846.SHANG T,WANG B,YANG Q K,et al.Quantitative analysis of pore evolution and its application to basinsimulation:A case from Chang 8 reservoir in Heshui Area,Ordos Basin,NW China.[J].Journal of Northwest University (Natural Science Edition),2023,53(5):843-846.
[7] 王秀娟，陈冬霞，郭文杰，等.拗陷湖盆“古湖岸线”“古深湖线”位置判别方法：以鄂尔多斯盆地上三叠统延长组长6油层组为例[J].西北大学学报(自然科学版),2022,52(3):495-507.WANG X J,CHEN D X,GUO W J,et al.Location discrimination methods of "ancient lake shoreline" and"ancient deep lake line" in continental lacustrine basin:Taking Chang 6 layers of Yanchang Formation in Ordos Basin as an example[J].Journal of Northwest University (Natural Science Edition),2022,52(3):495-507.
[8] 任纪舜.印支运动及其在中国大地构造演化中的意义[J].中国地质科学院院报，1984,9:31-34.REN J S.The Indosinian orogeny and its significance in the tectonic evolution of China[J].Journal of Chinese Academy of Geological Sciences,1984,9:31-34.
[9] 卢欣祥，李明立，王卫，等.秦岭造山带的印支运动及印支期成矿作用[J].矿床地质，2008,27(6):762-773.LU X X,LI M L,WANG W,et al.Indosinian move ment and metallogenesis in Qinling orogenic belt[J].Mineral Deposits,2008,27(6):762-773.
[10] 张义平，陈宣华，张进，等.印支运动在鄂尔多斯盆地和四川盆地启动时间的讨论：来自生长地层的证据[J].中国地质，2019,46(5):1021-1038.ZhANG Y P,CHEN X H,ZHANG J,et al.Discussion on the initial timing of the Indosinian movement in the Ordos Basin and the Sichuan basin:Constraints from growth strata evidence[J].Geology in China,2019.46(5):1021-1038.
[11] 张国伟，孟庆任，于在平，等.秦岭造山带的造山过程及其动力学特征[J].中国科学(D辑),1996,26(3):193-200.ZHANG G W,MENG Q R,YU Z P,et al.Orogenesis and dynamics of the Qingling orogen [J].Science in China (seires D),1996,26(3):193-200.
[12] 邓秀芹，李文厚，刘新社，等.鄂尔多斯盆地中三叠统与上三叠统地层界线讨论[J].地质学报，2009,83(8):1089-1096.DENG X Q,LI W H,LIU X S,et al.Discussion on the stratigraphic boundary between Middle Triassic and Upper Triassic[J].Acta Geologica Sinica,2009,83(8):1089-1096.
[13] ZHU R K,CUI J W,DENG S H,et al.High-precision dating and geological significance of Chang 7 tuff zircon of the Triassic Yanchang Formation,Ordos Basin in central China[J].Acta Geologica Sinica(English Edition),2019,93(6):1823-1834.
[14] 何自新，杨华，袁效奇.鄂尔多斯盆地地质剖面图集[M].北京：石油工业出版社，2004.
[15] 李文厚，陈强，李克永，等.鄂尔多斯盆地野外剖面沉积相图集[M].北京：地质出版社，2023.
[16] 邓秀芹，付金华，姚泾利，等.鄂尔多斯盆地中及上三叠统延长组沉积相与油气勘探的突破[J].古地理学报，2011,13(4):443- 455.DENG X Q,FU J H,YAO J L,et al.Sedimentary facies of the Middle-Upper Triassic Yanchang Formation in Ordos Basin and breakthrough in petroleum exploration[J].Journal of Palaeogeography,2011,13(4):443- 455.
[17] 王子野，毛治国，袁选俊，等.鄂尔多斯盆地西南部三叠系延长组长 9 段事件沉积类型、特征及地质意义[J].石油勘探与开发，2023,50(3):516-529.WANG Z Y,MAO Z G,YUAN X J,et al.Types,characteristics and geological significance of event deposits of Chang9 Member of Triassic Yanchang Formation in southwestern Ordos Basin,NW China[J].Petroleum Exploration and Development,2023,50(3):516-529.
[18] 张国伟，董云鹏，赖绍聪.秦岭-大别造山带南缘勉略构造带与勉略缝合带[J].中国科学(D辑),2003,33(12):1121-1135.ZHANG G W,DONG Y P,LAI S C,et al.The formation and evolution of the Mianlue ocean in the Mianlue structural zone and the Mianlue suture zone on thesouthern margin of the Qinling-Dabie orogenic belt[J].Science in China (Series D),2003,33(12):1121-1135.
[19] 王晓霞，王涛，张成立.秦岭造山带花岗质岩浆作用与造山带演化[J].中国科学：地球科学，2015,45(8):1109-1125.WANG X X,WANG T,ZHANG C L.Granitoid magmatism in the Qinling orogen,central China and its bearing on orogenic evolution[J].Science China Earth Sciences,2015,45(8):1109-1125.
[20] 张成立，王涛，王晓霞.秦岭造山带早中生代花岗岩成因及其构造环境[J].高校地质学报，2008,14(3):304-316.ZHANG C L,WANG T,WANG X X.Origin and tectonic setting of the Early Mesozoic granitoids in Qinlingorogenic belt[J].Geological Journal of China Universities,2008,14(3):304-316.
[21] WANG X X,WANG T,ZHANG C L.Neoproterozoic,Paleozoic,and Mesozoic granitoid magmatism in the Qinling orogen,China:Constraints on orogenic process[J].Journal of Asian Earth Sciences,2013,72:129-151.
[22] DONG Y P,LIU X M,ZHANG G W,et al.Triassic diorites and granitoids in the Foping area:Constraints on the conversion from subduction to collision in the Qinling orogen,China[J].Journal of Asian Earth Sciences,2012,47:123-142.
[23] 李皓东，周建波，李功宇，等.南天山—北山—索伦—长春缝合带的性质与演化[J].地质论评，2022,68(3):797-816.LI H D,ZHOU J B,LI G Y,et al.Nature and evolution of the South Tianshan mountains-Beishan Mountains-Solonker-Changchun Suture[J].Geological Review,2022,68(3):797-816.
[24] JIAN P,LIU D Y,KR?NER A,et al.Time scale of an early to mid-Paleozoic orogenic cycle of the long-lived central Asian orogenic belt,Inner Mongolia of China:Implications for continental growth[J].Lithos,2008,101(3):233-259.
[25] 邓秀芹，楚美娟，王龙，等.中晚三叠世鄂尔多斯盆地两期沉降及其形成机制[J].石油勘探与开发，2024,51(3):501-512.DENG X Q,CHU M J,WANG L,et al.Two stages of subsidence and its formation mechanisms in Mid-Late Triassic Ordos Basin,NW China[J].Petroleum Exploration and Development,2024,51(3):501-512.
[26] 张国伟，董云鹏，姚安平.秦岭造山带基本组成与结构及其构造演化[J].陕西地质，1997,15(2):1-14.ZHANG G W,DONG Y P,YAO A P.The crustal compositions,structures and tectonic evolution of the Qinling Orogenic belt[J].Geology of Shaanxi,1997,15(2):1-14.
[27] DICKINSON W R.Provenance of North American Phanerozoic sandstones in relation to tectonic setting[J].Geology Society of America Bull,1983,94(2):222-235.
[28] 陕西省地质调查院.陕西省区域地质志[M].北京：地质出版社，2015.
[29] 王益友，郭文莹，张国栋.几种地球化学标志在金湖凹陷阜宁群沉积环境中的应用[J].同济大学学报，1979,7(2):51- 60.WANG Y Y,GUO W Y,ZHANG G D.Application of some geochemical indicators in determing of sedimentary environment of the Funing Group (Paleogene),Jin-Hu depression,Kiangdu province[J].Journal of Tongji University,1979,7(2):51- 60.
[30] 雷卞军，阙洪培，胡宁，等.鄂西古生代硅质岩的地球化学特征及沉积环境[J].沉积与特提斯地质，2002,22(2):70-79.LEI B J,QUE H P,HU N,et al.Geochemistry and sedimentary environments of the Palaeozoic siliceousrocks in western Hubei[J].Sedimentary Geology and Tethyan Geology,2002,22(2):70-79.
[31] 腾格尔，刘文汇，徐永昌，等.缺氧环境及地球化学判识标志的探讨：以鄂尔多斯盆地为例[J].沉积学报，2004(2):365-372.TONGER,LIU W H,XU Y C,et al.The Discussion on anoxic environments and its geochemical identifying indices[J].Acta Sedimentologica Sinica,2004(2):365-372.
[32] HATCH J R,LEVENTHAL J S.Relationship between inferred redox potential of the depositional environment and geochemistry of the Upper Pennsylvanian(Missourian) Stark Shale Member of the Dennis Limestone Wabaunsee county Kansas U.S.A[J].Chemical Geology,1992,99:65-82.
[33] ALBERDI G M,TOCCO R.Trace metals and organic geochemistry of the Machiques Member (Aptian-Albian) and La Luna Formation (Cenomanian-Campanian)Venezuela[J].Chemical Geology,1999,160:19-38.
[34] 邱振，韦恒叶，刘翰林，等.异常高有机质沉积富集过程与元素地球化学特征[J].石油与天然气地质，2021,42(4):931-948.QIU Z,WEI H Y,LIU H L,et al.Accumulation of sediments with extraordinary high organic matter content:Insight gained through geochemical characterization of indictive elements[J].Oil & Gas Geology,2021,42(4):931-948.
[35] 刘翰林，邹才能，邱振，等.陆相黑色页岩沉积环境及有机质富集机制：以鄂尔多斯盆地长7 段为例[J].沉积学报，2023,41(6):1810-1829.LIU H L,ZOU C N,QIU Z,et al.Sedimentary depositional environment and organic matter enrichment mechanism of lacustrine black shales:A case study of the Chang 7 member in the Ordos Basin[J].Acta Sedimentologica Sinica,2023,41(6):1810-1829.
基本信息:
DOI：10.16152/j.cnki.xdxbzr.2024-06-012
中图分类号:P618.13
引用信息:
[1]邓秀芹,庞锦莲,孙勃.鄂尔多斯盆地三叠系延长组长10—长8段沉积演化特征[J].西北大学学报(自然科学版),2024,54(06):1078-1090.DOI:10.16152/j.cnki.xdxbzr.2024-06-012.
基金信息:
国家科技重大专项(2017ZX05001)