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《Scientia Geologica Sinica》1998,(4)
1.IntroductionTheexhumationprocessandmechanismoftheultrahigh-pressure(UHP)metamorphicrocksformtheDabie-SuluregionofChinaremainnuclear,althoughsomehypothesishavebeensuggested,suchaspop-up(OkayandSengor,1992),wedge-extrusion(Maruyamaetal.,1994),buoyancy(Emstetal.,1995),squeeze-up(Wang,1996),aswellasdelamination(Lionetal.,1996).Anysuccessfulhypothesisshouldstandatest,thatistheauthenticrecordpreservedintheorogenicbeltwheretheUHProcksdeveloped.TheDabie-SuluUHProcksoccurasamemberinthecollisi… 相似文献
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《Scientia Geologica Sinica》1998,(4)
1.IntroductionInrecentyears,northernJiangsuandsoutheasternShandongprovinceineasternChina,theSu-Luregion,hasdrawnmuchattentionforitsnumerousoccurrencesofcoesite-bearingcclogites(YangandSmith,1989;Hirajimaetal.,1990,1992,1993,EnamiandZang,1993;Zhaoetal.,1992;WangQetal.,1993;YeandCong,1993,Yeetal.,1996),UHPgamet-lherzolite(Yangetal.,1993,Zhangetal.,1994;Hiramatsuetal.,1995),UHPmarble(YeandHirajima,1996;Katoetal.,1997)andUHPmetagranitoid(Hirajimaetal.,1993;Zhangetal.,1996,Wallisetal.,… 相似文献
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Study on the Gravity Field and Deep-Seated Crustal Structure at the North Margin of the Qinghai-Tibet Plateau 总被引:1,自引:0,他引:1
MENG Lingshun 《Continental Dynamics》1997,(1)
1.I~ductionThenorthernmarginoftheQinghai-TibetplateauincludestheAltllnMis.,theQilianMis.,KunlunMis.,theQaidambasinandthesouthernTarimbasin.ThisareaistCctonicallycharacterizedbyintensiveCenozoicdeformationwithcomplicateddeformationalmechedsm(Molnaretal.,1987;Zheng,1991;Culetal.,1994;Ding,1995andXuetal.,1996).Thedeformationalmechanismsincludethrust-napping,strike-slipping,extensionandblockrotation,aswellassimultaneousupliftingandtypicalbasin-rangetectonics(CulandXu,1996).IntermsofCenozoi… 相似文献
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《Scientia Geologica Sinica》2000,(3)
1. IntroductionThe discovery of the ophiolites (composed of mafic-ultramafics plutons, radiolarian silicalites and the basic metavolcanic rocks) in Mianlue zone was one of the most important progresses in the study on Qingling orogen in recent years (Zhang G W et al., 1995, 1996; Zhang Z Q et al., 1996; Yin et al., 1998; Lai, 1997; Lai et al., 1996; Meng et al., 1999). Many geologists got the conclusions as followings. (1) along the Mianlue zone, the oceanic crust developed in late Paleoz… 相似文献
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MULTI-PERIODIC COLLISIONAL PROCESS BETWEEN INDIAN AND ASIAN CONTINENTS:A CASE OF EASTERN HIMALAYAN SYNTAXIS AND HENGDUAN MOUNTAINS 总被引:1,自引:0,他引:1
MULTI-PERIODIC COLLISIONAL PROCESS BETWEEN INDIAN AND ASIAN CONTINENTS:A CASE OF EASTERN HIMALAYAN SYNTAXIS AND HENGDUAN MOUNTAINS1 ZhongDalai,DingLin .RisingprocessoftheQinghai Xizang (Tibet) plateauanditsmechanism[J].ScienceInChina (se riesD) ,1996 ,39(4) :36 9~ 379.
2 DingLin ,ZhongDalai,PanYusheng ,etal.Fission trackevidenceforNeogenetoQuaternaryupliftoftheeasternHi malayansyntaxis[J].ChineseScienceBulletin ,1995 ,40 (16 ) :… 相似文献
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《Scientia Geologica Sinica》1998,(4)
1.IntroductionTheDabieshan-SuluUHPMzoneseparatestheNofthChinacratonandYangtzecraton.High-pressureandUHPMrocksandrelatedrocksrepresenttypicalrockformationincontinent-continentcollisionalzone.ItisgenerallytoacceptedthattheUHPMzoneiscutateastpartofDabieshanandtransformedabout500--600kmtonorthinSuluarea.TheDabieshanmetamorphicterrainhasbeensubdividedintothreepetrological-tectonicunitsfromnorthtosouth(Zhaietal.,1995;ZhaiandCong,1996),whicharenorthernDabieshancomplex(Andeantypemagmaticarcc… 相似文献
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New Eoenantiornithid Bird from the Early Cretaceous Jiufotang Formation of Western Liaoning, China 总被引:2,自引:2,他引:0
LI Li DUAN Ye HU Dongyu WANG Li CHENG Shaoli HOU Lianhai 《《地质学报》英文版》2006,80(1):38-41
1 Introduction Enantiornithes were the most blooming branch among the early birds and had distinct diversities. They flourished in the Early Cretaceous (Kurochkim, 1985; Chiappe, 1991; Sanz and Bonaparte, 1992; Boles, 1995; Elzanowski, 1995), and become extinct at the end of the Late Cretaceous. Lots of the birds have been reported in western Liaoning, China (Sereno and Rao, 1992; Zhou, 1995; Hou, 1996, 1997; Sanz and Chiappe, 1996; Sanz et al., 1997; Hou and Chen, 1999; Hou et al., 1… 相似文献
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GEOCHEMISTRY OF VOLCANIC ROCKS FROM WULIBA IN THE MIANLUE SUTURE ZONE, SOUTHERN QINLING 总被引:3,自引:0,他引:3
《Scientia Geologica Sinica》2001,(3)
1. IntroductionThe Mianlue (Mianxian-Lueyang) suture zone is one of the components of the Qinling orogenic belt and the latest major suture zone between North and South China. The data available suggest that it is a complicated ophiolitic tectonic melange zone including many tectonic slabs of different origins (Zhang et al., 1995; Lai et al., 1996; Lai et al.,1997; Lai et al.,1998; Xu et al.,1996). Up to now, however, there is not definite evidence of volcanic rock assemblage and geochemi… 相似文献
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《Scientia Geologica Sinica》1999,(1)
1.IntroductionThecontinentalcrustandtheuppermantlehavebeenasubjectofmanytomographicstudiesofvanationsinp-wavevelocity.Duringtwodecaysthesestudiesprovidedvelocityimagesofthecrustandthemantleinsubductionzones,convergenceareas,faultbelts,volcanicareas,seismicareasandorogenicbelts(VanderHistetal.,I991,Spakman,1991;Aki&Lee,1976,LiuFutianetal.,1987;Iyer&Dawson,1993;Sun&Liu,1995;Sunetal.;1996,Liuetal.,1995).However,theseimagesleaveussomequestions.Forexample,howreliabletheyare?Ormorespecifically… 相似文献
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阿尔金地区以巨型阿尔金走滑断裂而著称,断裂以西为阿尔金山地区,以东为祁连山地区.近年来人们陆续在阿尔金断裂两侧发现榴辉岩带,即南阿尔金榴辉岩带(车自成等1995;刘良等1996)和柴北缘榴辉岩带(杨经绥等,1998,2000),指出阿尔金断裂两侧的岩石单元可以对比,并推断阿尔金断裂左行走滑位移了约400 km(许志琴等,1999;葛肖虹等,1999). 相似文献
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INTRODUCTION Anew ultrahigh pressure ( UHP) metamorphicbelt ,the South Altun-North Qaidam-North QinlingUHP metamorphic belt ,has been recently discoveredand widely discussed by different workers (Yang J Set al .,2003 ,2002 ,2001 ,2000 ,1998 ;Zhang J Xetal .,2002 ,1999 ; Zhang G et al .,2001 ; Hu et al .,1996 ,1995 ,1994) . Detailed studies have also beencarried out onthe Dabie-Sulu UHP/ HP metamorphicbelt inthe central orogenic belt (COB) of China (Gaoet al .,2002 ;Sun et al … 相似文献
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气候变暖背景下祁连山七一冰川融水径流变化研究 总被引:4,自引:0,他引:4
本文利用2006年实测水文数据,找出冰川自动气象站气温与冰川融水径流量关系,并根据酒泉气象站与冰川末端气象站气温关系,重建1960~2004年七一冰川融水径流资料.近40多年来,酒泉站气温增加幅度为0.24℃/10a,冰川融水量增加幅度为0.076×106 m3/10 a,冰川融水量随气温增加明显.利用气候突变分析发现,气温发生突变点为1996年,1996~2004年冰川表面年平均气温比1960~1995年间高0.41℃,年冰川融水量1996~2004年比1960~1995年增加了0.41×106 m3(增加26.9%),冰川融水径流量在气候变暖背景下变化显著. 相似文献
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The First Mesozoic Heterodactyl Bird from China 总被引:1,自引:1,他引:0
ZHANG Zihui HOU Lianhai HASEGAWA Yoshikasu Jingmai O'CONNOR Larry D. MARTIN Luis M. CHIAPPE 《《地质学报》英文版》2006,80(5):631-635
1 Introduction Enantiornithines were the dominant birds nearly worldwide throughout the entire span of the Cretaceous (Chiappe, 1995; Feduccia, 1996). The adaptive radiation of opposite birds is little known besides the disparity of rostral morphology in Boluochia (Zhou, 1995), Longipteryx (Zhang et al., 2001), Longirostravis ( Hou et al., 2004), and the presence of stomach contents that reflect a diversity of diets. Like the structure of rostrum, differentiation of the locomotor apparatu… 相似文献
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Distribution and Geochemical Implication of Aromatic Hydrocarbons across the Meishan Permian-Triassic Boundary 总被引:5,自引:0,他引:5
INTRODUCTIONThe Permian-Triassic ( Tr/P) boundary , datedto be (251 .4±0 .3) Ma ago ,is marked by the mostdrastic mass extinction of organisms in the Phanero-zoic .In order to explore the pattern and the cause ofthe mass extinction,extensive research has been fo-cused on biostratigraphy , isotopic chronostratigra-phy , event stratigraphy , ecostratigraphy and se-quence stratigraphy (Payne et al .,2004 ; Reichowetal .,2002 ; Yin et al .,2001 ;Jin et al .,2000 ;Zhanget al .,1996 ,1995 ;… 相似文献
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Wang Xueping Wei Min Faculty of Earth Resources China University of Geosciences Wuhan Yang Lipei Zhao Jingman China Mineral Information Research Institute Beijing 《中国地质大学学报(英文版)》2000,11(1)
INTRODUCTIONSystematic exploration theory is an important aspect ofquantitative prediction and exploration assessment of m ineralresources.Recently,the three- stage quantitative evaluation ofmineral resources (China Mineral Information ResearchInstitute,1996 ;Zhao,1995 ) is widely carried out in the West.The three- stage prediction and evaluation includes:1findingpracticable prospect area on the basis of analyzing m etallogenicgeological setting,2 establishing grade- tonnage model oftar… 相似文献