青藏高原东北缘祁连山地区古地震记录与区域构造意义
详细信息 本馆镜像全文    |  推荐本文 | | 获取馆网全文
摘要
青藏高原东北缘的地质地貌特征与基本构造格架受阿尔金左行走滑断裂、东昆仑左行走滑断裂和海源左行走滑断裂控制,在青藏高原的碰撞造山过程中地震作用贯穿始终。2011至2012年,作者对青藏高原东北缘东起靖远(海原断裂东段)西至昌马盆地(阿尔金断裂东南)的软沉积物变形(震积岩)进行的系统调研表明,青藏高原东北缘祁连山地区从三叠纪至第四纪各时代(侏罗纪以外)的地层中,均发现丰富的古地震纪录(震积岩)。代表性震积岩发现点和层位有:靖远宝积山上三叠统、靖远糜滩乡下白垩统、昌马盆地下白垩统以及赤金堡和酒泉磁窑口附近的第四系。主要的震积岩类型有:液化脉、负载、球-枕构造、液化卷曲、层间微断裂等。根据区域地质资料分析,这些震积岩均分布于区域性大断裂附近。本文简单讨论了主要震积岩发现点与其相邻的区域构造(地震)活动之间的关系,根据靖远附近上三叠统普遍发育震积岩,提出海原断裂带的初始活动时间很可能就在晚三叠世,与青藏高原东缘龙门山地区印支期的造山地震同时期。
Marking the northern margin of the Tibet Plateau,the Altyn Tagh fault system not only truncates various geological units, controlling both the geometric characters and tectonic framework in northern Tibet,but also comprises the main passage where the landmass easternward extrude. It is crucial to study the fault system’s forming,active ages and fault trace evolvement to probe the dynamic mechanism of the Tibet Plateau. Here,we take advantage of the soft sediment deformation revealed in Middle Jurassic lacustrine strata in southern Subei to explore such questions. There are generally 26 deformation layers found which can be further subdivided into 4 categories in the field: load and pillow structure,liquefied diapir and crater,liquefied breccia and convoluted structure. The grain size statistic shows the grains mainly range from 0.2~0.3mm ( 60% ) ,highly comparable with the modern earthquake ejected and experimental grains size,thuswe consider them as earthquake induced liquefaction. Based on the empirical statistical relation between the earthquake magnitude and the maximum liquefactiondistance,we presume the minimum magnitude is 6~6. 5,whereas,in view of the specific deformation structure with different magnitude,we suggest the maximum magnitude may exceed 7. 5. The 26 deformation layers represent an earthquake episode in Middle Jurassic,with at least4 earthquakes. The Altyn Tagh fault system was highly active in Middle Jurassic and the fault trace had already reached Subei area at least. Given the Triassic active agededuced from the mylonite in Xorkol and the volcano activities in Cretaceous and Jurassic,soft sediment deformation in Yumen area in Cretaceous,the Altyn Tagh fault may have experienced at least three active ages: the Late Triassic,the Middle Jurassic and the Cenozoic,with the fault length expand from several hundred kilometers to more than 1000 kilometers and to 2000 kilometers.
引文
①甘肃省地质局第二区域地质测量队第三分队.1972.1︰5万昌马幅地质图
    ①甘肃省地质局第二区域地质测量队第四连.1972.1︰20万玉门镇幅地质图
    Alsop GI and Marco S.2011.Soft-sediment deformation withinseismogenic slumps of the Dead Sea Basin.Journal of StructuralGeology,33(4):433-457
    Burchfiel BC,Zhang PZ,Wang YP,Zhang WQ,Song FM,Deng QD,Molnar P and Royden L.1991.Geology of the Haiyuan Fault Zone,Ningxia-Hui Autonomous Region,China,and its relation to theevolution of the northeastern margin of the Tibetan Plateau.Tectonics,10(6):1091-1110
    Deng QD and Yang H.2011.Reference lists about Haiyuan Earthquakeand Haiyuan active fault.Seismology and Geology,33(1):231-239(in Chinese with English abstract)
    Du YS,Gong SY,Han X,Wang JS,Gu SZ and Lin WJ.2001.Silurianseismites in Hanxia,Yumen,North Qilian Mountains,and theirtectonic significance.Acta Geologica Sinica,75(4):385-390
    Du YS.2011.Discussion about studies of earthquake event deposit inChina.Journal of Palaeogeography,13(6):581-590(in Chinesewith English abstract)
    Fu ZX,Liu GP and Chen QF.2001.Dynamic analysis on interactionbetween the Haiyuan-Gulang-Changma great earthquake in the northboundary of the Tibetan Plateau.Seismology and Geology,23(1):35-42(in Chinese with English abstract)
    Ghosh SK,Pandey AK,Pandey P,Ray Y and Sinha S.2012.Soft-sediment deformation structures from the Paleoproterozoic DamthaGroup of Garhwal Lesser Himalaya,India.Sedimentary Geology,261-262:76-89
    Li HB and Yang JS.2004.Evidence for Cretaceous uplift of the northernQinghai-Tibetan Plateau.Earth Science Frontiers,11(4):345-359(in Chinese with English abstract)
    Li HB,Yang JS,Xu ZQ,Sun ZM,Tapponnier P,Woerd J and MeriauxAS.2006.The constraint of the Altyn Tagh fault system to thegrowth and rise of the northern Tibetan Plateau.Earth ScienceFrontiers,13(4):59-79(in Chinese with English abstract)
    Li HB,Xu ZQ,Yang JS,Qi XX and Tapponnier P.2007.The maximumcumulative strike-slip displacement of the Altyn Tagh Fault:900km?Geological Bulletin of China,26(10):1288-1298(in Chinesewith English abstract)
    Liu J,Xu XW,Li YF and Ran YK.2007.On the completeness ofpaleoseismic records of strike-slip faults:An example from theLaohushan segment of the Haiyuan fault in Gansu,China,with adiscussion of several problems in the paleoearthquake study.Geological Bulletin of China,26(6):650-660(in Chinese withEnglish abstract)
    LüHB,Wang J and Zhang HC.2011.Discovery of the Late Mesozoicslump beds in Lingshan Island,Shandong,and a pilot research onthe regional tectonics.Acta Geologica Sinica,85(6):938-946(in Chinese with English abstract)
    Ma LF.2002.Geological Atlas of China.Beijing:Geological PublishingHouse,90-91(in Chinese)
    Mastrogiacomo G,Moretti M,Owen G and Spalluto L.2012.Tectonictriggering of slump sheets in the Upper Cretaceous carbonatesuccession of the Porto Selvaggio area(Salento peninsula,southernItaly):Synsedimentary tectonics in the Apulian Carbonate Platform.Sedimentary Geology,269-270:15-27
    Mohindra R and Bagati TN.1996.Seismically induced soft-sedimentdeformation structures(seismites)around Sumdo in the lower Spitivalley(Tethys Himalaya).Sedimentary Geology,101(1-2):69-83
    Mugnier JL,Huyghe P,Gajurel AP,Upreti BN and Jouanne F.2011.Seismites in the Kathmandu basin and seismic hazard in centralHimalaya.Tectonophysics,509(1-2):33-49
    Owen G.1996.Experimental soft-sediment deformation:Structuresformed by the liquefaction of unconsolidated sands and some ancientexamples.Sedimentology,43(2):279-293
    Pan GT and Ding J.2004.Geological Map of Qinghai-Tibetan Plateauand Its Vicinity Area.Chengdu:Chengdu Map Publishing House(in Chinese)
    Qiao XF,Song TR,Gao LZ,Peng Y,Zhang CH and Zhang YX.2006.Earthquake Record in Strata(Ancient Earthquake).Beijing:Geological Publishing House,1-263(in Chinese)
    Qiao XF and Li HB.2008.Pillow,ball-and-pillow structures:Paleo-seismic records within strata.Geological Review,54(6):721-730(in Chinese with English abstract)
    Qiao XF and Li HB.2009.Effect of earthquake and ancient earthquakeon sediments.Journal of Palaeogeography,11(6):593-610(inChinese with English abstract)
    Qiao XF,Guo XP,Li HB,Gou ZH,Su DC,Tang ZM,Zhang W andYang G.2012.Soft-sediment deformations in the Late Trassic andthe Indosinian tectonic movements in Longmenshan.Acta GeologicaSinica,86(1):132-156(in Chinese with English abstract)
    Ran YK and Deng QD.1999.Research history,current situation anddevelopment trend of paleoseismology.Chinese Science Bulletin,44(1):12-20(in Chinese)
    Rana R,Bhattacharya F,Basavaiah N,Pant RK and Juyal N.2013.Softsediment deformation structures and their implications for LateQuaternary seismicity on the South Tibetan Detachment System,Central Himalaya(Uttarakhand),India.Tectonophysics,592:165-174
    Shi YJ,Chen WJ,Cao ZL,Li HZ,Wang BT and Huang SJ.2009.Discovery of seismites in the southwestern Qaidam basin and itssignificance for exploration.Acta Geologica Sinica,83(8):1178-1187(in Chinese with English abstract)
    Singh S and Jain AK.2007.Liquefaction and fluidization of lacustrinedeposits from Lahaul-Spiti and Ladakh Himalaya:Geologicalevidences of paleoseismicity along active fault zone.SedimentaryGeology,196(1-4):47-57
    Sun ZM,Yang ZY,Yang TS and Lin AM.2001.New Early Cretaceouspaleoagnetic results from the Haiyuan area and its tectonicimplications.Chinese Journal of Geophysics,44(5):678-686(inChinese with English abstract)
    Sun ZM,Li HB,Pei JL,Xu W,Pan JW,Si JL,Zhao LS and Zhao Y.2012.Strike-slip movement of the Altyn Tagh fault and implicationsfor mountain formation inferred from paleomagnetic data innortheastern Tibetan Plateau.Acta Petrogica Sinica,28(6):1928-1936(in Chinese with English abstract)
    Tapponnier P,Xu ZQ,Roger F,Meyer B,Arnaud N,Wittlinger G andYang JS.2001.Oblique stepwise rise and growth of the TibetPlateau.Science,294(5547):1671-1677
    Wang SL,Lu HF,Jia D,Shi HS and Ye SF.2001.Structural featuresand origin of Changma Basin,Gansu Province.Geological Journal ofChina Universities,7(1):13-20(in Chinese with Englishabstract)
    Xie WH and Gu ZG.1988.The Late Triassic flora and coal prospects atBaojishan,Jingyuan,Gansu.Regional Geology of China,(4):358-361(in Chinese with English abstract)
    Xu ZQ,Li HB and Yang JS.2006.An orogenic plateau:The orogeniccollage and orogenic types of the Qinghai-Tibet Plateau.EarthScience Frontiers,13(4):1-17(in Chinese with Englishabstract)
    Xu ZQ,Yang JS,Li HB,Zhang JX and Wu CL.2007.OrogenicPlateau:Terrane Amalgamation,Collision and Uplift in the Qinghai-Tibet Plateau.Beijing:Geological Publishing House,1-458(inChinese with English abstract)
    Xu ZQ,Li HB,Tang ZM,Qi XX,Li HQ and Cai ZH.2011.Thetransformation of the terrain structures of the Tibet Plateau throughlarge-scale strike-slip faults.Acta Petrologica Sinica,27(11):3157-3170(in Chinese with English abstract)
    Yan TS.2006.Study on upper Triassic flora and paleaogeography inBaojishan,Gansu Province.Geography and Geo-InformationScience,22(1):103-108(in Chinese with English abstract)
    Yang JP,Nie LL,Zhang LP,Yang J and Zhang Y.2008.Reservoircharacters and paleoseismic records in Neogene Wunan oilfield,southwestern margin of the Qaidam Basin.Acta Geologica Sinica,82(6):805-812(in Chinese with English abstract)
    Zhang B,Wang P and Wang JC.2011.Discussion of the origin of thesoft-sediment deformation structures in paleo-dammed lake sedimentsin the upper reaches of the Minjiang River.Journal of SeismologicalResearch,34(1):67-74(in Chinese with English abstract)
    Zhang Q,Zhu XM,Zhang JJ,Song G,Yan WP and Zhang QW.2003.The discovery of seismite and its significance in Lower Cretaceous inLiugouzhuang and Kulongshan region,Qingnan Sag,Jiuxi Basin.Acta Geologica Sinica,77(2):158-163(in Chinese with Englishabstract)
    邓起东,杨虎.2011.海原地震和海原活动断裂带文献目录(1920~2011).地震地质,33(1):231-239
    杜远生.2011.中国地震事件沉积研究的若干问题探讨.古地理学报,13(6):581-590
    傅征祥,刘桂萍,陈棋福.2001.青藏高原北缘海原、古浪、昌马大地震间相互作用的动力学分析.地震地质,23(1):35-42
    李海兵,杨经绥.2004.青藏高原北部白垩纪隆升的证据.地学前缘,11(4):345-359
    李海兵,杨经绥,许志琴,孙知明,Tapponnier P,Van Der Woerd J,Meriaux AS.2006.阿尔金断裂带对青藏高原北部生长、隆升的制约.地学前缘,13(4):59-79
    李海兵,许志琴,杨经绥,戚学祥,Tapponnier P.2007.阿尔金断裂带最大累积走滑位移量——900km?地质通报,(10):1288-1298
    刘静,徐锡伟,李岩峰,冉勇康.2007.以海原断裂甘肃老虎山段为例浅析走滑断裂古地震记录的完整性:兼论古地震研究中的若干问题.地质通报,26(6):650-660
    吕洪波,王俊,张海春.2011.山东灵山岛晚中生代滑塌沉积层的发现及区域构造意义初探.地质学报,85(6):938-946
    马丽芳.2002.中国地质图集.北京:地质出版社,90-91
    潘桂堂,丁俊.2004.青藏高原及邻区地质图.成都:成都地图出版社
    乔秀夫,宋天锐,高林志,彭阳,张传恒,章雨旭.2006.地层中地震记录(古地震).北京:地质出版社,1-263
    乔秀夫,李海兵.2008.枕、球-枕构造:地层中的古地震记录.地质论评,54(6):721-730
    乔秀夫,李海兵.2009.沉积物的地震及古地震效应.古地理学报,11(6):593-610
    乔秀夫,郭宪璞,李海兵,苟宗海,苏德辰,唐哲民,张伟,杨光.2012.龙门山晚三叠世软沉积物变形与印支期构造运动.地质学报,86(1):132-156
    冉勇康,邓起东.1999.古地震学研究的历史、现状和发展趋势.科学通报,44(1):12-20
    石亚军,陈武杰,曹正林,李红哲,王斌婷,黄思静.2009.柴达木盆地西南区震积岩的发现及其引发的勘探启迪.地质学报,83(8):1178-1187
    孙知明,杨振宇,杨天水,林爱明.2001.海原地区早白垩世古地磁结果及其构造意义.地球物理学报,44(5):678-686
    孙知明,李海兵,裴军令,许伟,潘家伟,司家亮,赵来时,赵越.2012.阿尔金断裂走滑作用对青藏高原东北缘山脉形成的古地磁证据.岩石学报,28(6):1928-1936
    王胜利,卢华复,贾东,石火生,叶尚夫.2001.甘肃昌马盆地构造特征与成因.高校地质学报,7(1):13-20
    谢万华,谷祖刚.1988.甘肃靖远县宝积山晚三叠世植物群组合与含煤远景初探.中国区域地质,(4):358-361
    许志琴,李海兵,杨经绥.2006.造山的高原——青藏高原巨型造山拼贴体和造山类型.地学前缘,13(4):1-17
    许志琴,杨经绥,李海兵,张建新,吴才来.2007.造山的高原——青藏高原的地体拼合和碰撞动力学.北京:地质出版社,1-458
    许志琴,李海兵,唐哲民,戚学祥,李化启,蔡志慧.2011.大型走滑断裂对青藏高原地体构架的改造.岩石学报,27(11):3157-3170
    阎同生.2006.甘肃省宝积山晚三叠世植物群与古地理研究.地理与地理信息科学,22(1):103-108
    杨剑萍,聂玲玲,张琳璞,杨君,张跃.2008.柴达木盆地西南缘乌南油田新近系古地震纪录及储集性能研究.地质学报,82(6):805-812
    张斌,王萍,王建存.2011.岷江上游堰塞湖沉积中软沉积物变形构造成因讨论.地震研究,34(1):67-74
    张琴,朱筱敏,张建军,宋刚,阎伟鹏,张群伟.2003.酒西盆地青南凹陷柳沟庄-窟窿山地区下白垩统震积岩的发现及意义.地质学报,77(2):158-163

版权所有:© 2023 中国地质图书馆 中国地质调查局地学文献中心