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1.
MASS ACCUMULATION IN THE CENOZOIC HOH XIL BASIN,NORTHERN TIBET1 BarronEJ,WashingtonWM .Theroleofgeographicvariablesinexplainingpaleoclimates:ResultsfromCretaceousclimatemodelsensitivitystudies[J] ..JournalofGeophysicalResearch ,1984 ,89:12 6 7～ 12 79.
2 HayWW ,ShawCA ,WoldCN .Mass balancedpaleogeographicreconstructions[J] ..GeologischeRundschau,1989,78( 1) :2 0 7～ 2 4 2 .
3 LiuZhifei,WangChengshan .FaciesanalysisanddepositionalprocessesofCenozoicsed… 相似文献
2.
Shi Zhiqiang Yi Haisheng Lin Jinhui Zhu Lidong Liu Dengzhong Huang Jijun Tao ZhuanWT ”BX 《地学前缘》2000,(Z1)
PROVENANCE OF LOWER TERTIARY REDBEDS IN HOH XIL BASIN AND UPLIFT OF NORTHERN TIBET PLATEAU 相似文献
3.
HOH XIL PIGGYBACK BASINS:IMPLICATIONS FOR PALEOGENE SHORTENING OF THE TIBETAN PLATEAU 相似文献
4.
Facies analysis and depositional systems of Cenozoic sediments in the Hoh Xil basin, northern Tibet 总被引：12，自引：0，他引：12
A sedimentary succession more than 5800 m thick, including the Lower Eocene to Lower Oligocene Fenghuoshan Group, the Lower Oligocene Yaxicuo Group, and the Lower Miocene Wudaoliang Group, is widely distributed in the Hoh Xil piggyback basin, the largest Cenozoic sedimentary basin in the hinterland of the Tibetan plateau. The strata of the Fenghuoshan and Yaxicuo groups have undergone strong deformation, whereas only minor tilting has occurred in the Wudaoliang Group. We analyze their sedimentary facies and depositional systems to help characterize continental collision and early uplift of the Tibetan plateau. The results indicate fluvial, lacustrine, and fan-delta facies for the Fenghuoshan Group, fluvial and lacustrine facies for the Yaxicuo Group, and lacustrine facies for the Wudaoliang Group. Development of the Hoh Xil basin underwent three stages: (1) the Fenghuoshan Group was deposited mainly in the Fenghuoshan-Hantaishan sub-basin between 56.0 and 31.8 Ma ago; (2) the Yaxicuo Group was deposited mainly in the Wudaoliang and Zhuolai Lake sub-basins between 31.8 and 30.0 Ma ago; and (3) the Wudaoliang Group was deposited throughout the entire Hoh Xil basin during the Early Miocene. The Fenghuoshan and Yaxicuo groups were deposited in piggyback basins during the Early Eocene to Early Oligocene, whereas the Wudaoliang Group was deposited in a relatively stable large lake. The Hoh Xil basin underwent two periods of strong north–south shortening, which could have been produced by the collision between India and Asia and the early uplift of the Tibetan plateau. The study suggests the Hoh Xil region could reach a high elevation during the Late Oligocene and the diachronous uplift history for the Tibetan plateau from east to west. 相似文献
5.
可可西里盆地早渐新世雅西措群沉积环境分析及古气候意义 总被引：18，自引：3，他引：15
可可西里盆地是青藏高原腹地最大的第三纪沉积盆地,第三纪沉积地层包括早始新世 -早渐新世风火山群、早渐新世雅西措群、早中新世五道梁群。其中,雅西措群为紫红色、砖红色泥岩、含膏泥岩与紫红色粉砂岩、细砂岩韵律互层,夹白色石膏薄层和石膏结核层,沉积厚度为 6 70.0m,沉积环境主要由河流和湖泊环境组成,并以湖泊环境为主,古水流方向反映盆地沉积中心逐渐向东向北迁移。雅西措群中石膏层的突然大量出现发生在底部地层距今约32.0Ma,体现了渐新世最早期的全球变冷变干事件在青藏高原北部的记录。 相似文献
6.
青藏高原新生代构造岩相古地理演化及其对构造隆升的响应 总被引：2，自引：0，他引：2
在系统分析青藏高原新生代98个残留盆地类型、形成构造背景、岩石地层序列的基础上, 对青藏高原古新世—始新世、渐新世、中新世及上新世构造岩相古地理演化特征进行了讨论: (1)古新世—始新世: 松潘—甘孜和冈底斯带为大面积构造隆起蚀源区.塔里木东部、柴达木、羌塘、可可西里地区主体表现为大面积的构造压陷湖盆-冲泛平原沉积.高原西部和南部为新特提斯海.(2)渐新世: 冈底斯—喜马拉雅和喀喇昆仑大范围沉积缺失, 指示上述地区大面积隆升.沿雅江自东向西古河形成(大竹卡砾岩).西昆仑和松潘—甘孜地区仍为隆起蚀源区.塔里木、柴达木、羌塘、可可西里地区主体表现为大面积构造压陷湖盆沉积.塔里木西南部为压陷盆地滨浅海沉积.渐新世末塔里木海相沉积结束.(3)中新世: 约23 Ma时高原及周边不整合面广布, 标志高原整体隆升.塔里木、柴达木及西宁—兰州、羌塘、可可西里等地区主体表现为大面积的构造压陷湖盆沉积; 约18~13 Ma高原及周边出现中新世最大湖泊扩张期.约13~10 Ma期间, 藏南南北向断陷盆地形成, 是高原隆升到足够高度开始垮塌的标志.(4)上新世: 除可可西里—羌塘、塔里木、柴达木等少数大型湖盆外, 大部分地区为隆起剥蚀区.由于上新世的持续隆升和强烈的断裂活动, 使大型盆地的基底抬升被分割为小盆地, 湖相沉积显著萎缩, 进入巨砾岩堆积期, 是高原整体隆升的响应.高原从古近纪的东高西低格局, 经历了新近纪全区的不均衡隆升和坳陷, 最终铸就了西高东低的地貌格局, 青藏作为一个统一的高原发生了重大的地貌反转事件. 相似文献
7.
RAN Bo ZHAO Xixi LIU Zhifei WANG Chengshan ZHU Lidong JIN Wei LI Yalin 《《地质学报》英文版》2016,90(3):858-869
Understanding the Cenozoic vertical-axis rotation in the Tibetan Plateau is crucial for continental dynamic evolution. Paleomagnetic and rock magnetic investigations were carried out for the Oligocene and Miocene continental rocks of the Hoh Xil basin in order to better understand the tectonic rotations of central Tibet. The study area was located in the Tongtianhe area located in the southern part of the Hoh Xil basin and northern margin of the Tanggula thrust system in central-northern Tibet. A total of 160 independently oriented paleomagnetic samples were drilled from the Tongtianhe section for this study. The magnetic properties of magnetite and hematite have been recognized by measurements of magnetic susceptibility vs. temperature curves and unblocking temperatures. The mean directions of the Oligocene Yaxicuo Group in stratigraphic coordinates(Declination/Inclination = 354.9°/29.3°, k = 33.0, α_(95) = 13.5°, N =5 Sites) and of the Miocene Wudaoliang Group in stratigraphic coordinates(Declination/Inclination = 3.6°/36.4°, k = 161.0, α_(95) = 9.7°, N =3 Sites) pass reversal tests, indicating the primary nature of the characteristic magnetizations. Our results suggested that the sampled areas in the Tuotuohe depression of the Hoh Xil basin have undergone no paleomagnetically detectable rotations under single thrusting from the Tanggula thrust system. Our findings, together with constraints from other tectonic characteristics reported by previous paleomagnetic studies, suggest tectonic rotations in the Cuoredejia and Wudaoliang depressions of the Hoh Xil basin were affected by strike-slip faulting of the Fenghuo Shan-Nangqian thrust systems. A closer examination of geological data and different vertical-axis rotation magnitudes suggest the tectonic history of the Hoh Xil basin may be controlled by thrust and strike-slip faulting since the Eocene. 相似文献
8.
MAGNETOSTRATIGRAPHIC DATING:IMPLICATIONS FOR TERTIARY EVOLUTION OF THE HOH XIL BASIN, NORTHERN TIBET 总被引：1，自引：0，他引：1
MAGNETOSTRATIGRAPHIC DATING:IMPLICATIONS FOR TERTIARY EVOLUTION OF THE HOH XIL BASIN, NORTHERN TIBET1 BGMRQ (BureauofGeologyandMineralResourcesofQinghai) .RegionalgeologyofQinghai(inChinesewithEnglishab stract) [M] .Beijing :ChinaGeolPress,1991.
2 CowardWP ,KiddWSF ,Pang,Y ,etal.Thestructureof1985TibetGeotraverse ,LhasatoGolmud.In:Sino BritishComprehensiveGeologicalExpeditionTeamoftheQinghai TibetPlateau.ThegeologicalevolutionoftheQin… 相似文献
9.
ZHANG Kexin WANG Guocan XU Yadong LUO Mansheng JI Junliang XIAO Guoqiao WANG An SONG Bowen LIANG Yinpin JIANG Shangsong CAO Kai CHEN Fenning CHEN Ruiming YANG Yongfeng 《《地质学报》英文版》2013,87(2):555-575
We have studied the evolution of the tectonic lithofacies paleogeography of Paleocene–Eocene, Oligocene, Miocene, and Pliocene of the Qinghai–Tibet Plateau by compiling data regarding the type, tectonic setting, and lithostratigraphic sequence of 98 remnant basins in the plateau area. Our results can be summarized as follows. (1) The Paleocene to Eocene is characterized by uplift and erosion in the Songpan–Garzê and Gangdisê belts, depression (lakes and pluvial plains) in eastern Tarim, Qaidam, Qiangtang, and Hoh Xil, and the Neo-Tethys Sea in the western and southern Qinghai–Tibet Plateau. (2) The Oligocene is characterized by uplift in the Gangdisê–Himalaya and Karakorum regions (marked by the absence of sedimentation), fluvial transport (originating eastward and flowing westward) in the Brahmaputra region (marked by the deposition of Dazhuka conglomerate), uplift and erosion in western Kunlun and Songpan–Garzê, and depression (lakes) in the Tarim, Qaidam, Qiangtang, and Hoh Xil. The Oligocene is further characterized by depressional littoral and neritic basins in southwestern Tarim, with marine facies deposition ceasing at the end of the Oligocene. (3) For the Miocene, a widespread regional unconformity (ca. 23 Ma) in and adjacent to the plateau indicates comprehensive uplift of the plateau. This period is characterized by depressions (lakes) in the Tarim, Qaidam, Xining–Nanzhou, Qiangtang, and Hoh Xil. Lacustrine facies deposition expanded to peak in and adjacent to the plateau ca. 18–13 Ma, and north–south fault basins formed in southern Tibet ca. 13–10 Ma. All of these features indicate that the plateau uplifted to its peak and began to collapse. (4) Uplift and erosion occurred during the Pliocene in most parts of the plateau, except in the Hoh Xil–Qiangtang, Tarim, and Qaidam. 相似文献
10.
THE EARLY UPLIFT IN NORTHERN TIBETAN PLATEAU: EVIDENCE FROM THE STUDY ON CENOZOIC VOLCANIC ROCKS IN QIANGTANG REGION 相似文献
11.
Paleocurrent indicator data collected in field work were used to study the early Cenozoic regional paleodrainage patterns in the Hob Xil basin in northern Tibetan plateau. The paleocurrent directions of the Eocene Fenghuoshan Group obviously show that the flows were northward with a unidirectional dispersal pattern. This probably reflects the uplift of the Qiangtang terrain during the initial basin deposition period and indicates that the Tanggula Moutains occurred as topographic highlands at least in the Eocene. Paleoflows of the Oligocene Yaxicuo Group were dominantly oriented to the north and then flowed eastwards during its late deposition. This regional variability of paleodrainage patterns of the Yaxicuo Group is interpreted to record the dispersal style of sediments from transverse rivers to longitudinal river systems. It is inferred that the Oligocene uplift of the Kunlun Mountains obstructed by northward paleoflows and created longitudinal river systems parallel to the orogenic belts. The temporal and spatial changes of the paleodrainage patterns suggest that the northern boundary of the Tibetan plateau during the early Cenozoic was situated in the Hoh Xil area and its uplift has progressed northwards through time. 相似文献
12.
青藏高原北部盆地构造沉积演化与高原向北生长过程 总被引：22，自引：1，他引：21
从可可西里到河西走廊的青藏高原的北部地区,地貌具有独特的"盆-岭"相间的特征,是青藏高原隆升增长过程中长期地质作用的产物,沉积盆地记录了这一过程的演化历史。对可可西里盆地、柴达木盆地和酒泉盆地新生代的沉积充填与盆地动力学背景的研究发现,3个盆地的演化序列具有相似性,盆地的早期为走滑盆地或伸展盆地性质,中期发育前陆盆地,最后以山间盆地结束。以南北向挤压短缩为动力背景的前陆盆地是高原北部造山带运动的直接响应。高原北部前陆盆地的发育时序为：可可西里前陆盆地（53～23Ma）、柴达木前陆盆地（46～2．45Ma）和酒泉前陆盆地（29．5～0．13Ma）,反映了青藏高原北部在新生代具有向北阶段性生长的特征。 相似文献
13.
可可西里西段羊湖盆地沉积、构造特征及其动力学意义 总被引：1，自引：0，他引：1
对可可西里西段新生代盆地缺乏了解是导致该区新生代地质演化存在争议的重要原因.本文以沉积学和构造变形分析为主要手段,对可可西里西段羊湖盆地时代、充填序列、物源区和变形特征进行了分析,结果表明,羊湖盆地新生界沉积厚度大于1302m,主要由下部雅西错组冲积扇相碎屑岩和上部五道梁群湖泊相碳酸盐岩组成,其岩石组合和充填序列与可可西里东段具有一致性,同时古流向和碎屑锆石U-Pb年代学分析显示盆地物源来南部的羌塘地块,盆地形成演化受南部褶皱冲断带制约,盆地构造变形强烈,沿褶皱冲断带和羊湖盆地地壳分别发生51％和41％的缩短.沉积充填结构和变形特征表明,羊湖盆地与东段可可西里盆地具有相同的演化历史和性质,预示青藏高原中部在渐新世-中新世在存在一个大的、统一的可可西里盆地. 相似文献
14.
藏北可可西里盆地老第三纪沉积物源区分析及其高原隆升意义 总被引：6，自引：2，他引：6
可可西里盆地位于昆仑山和唐古拉山之间 ,是青藏高原腹地最大的第三纪沉积盆地 ,对于研究青藏高原早期隆升和地壳短缩过程具有重要作用 .盆地保存的始新世—渐新世早期风火山群和雅西措群主要由碎屑岩和泥岩组成 ,厚度为 5 45 2 .8m .碎屑岩的物源区分析表明 ,风火山群主要来自于南部的唐古拉造山带二叠—三叠纪地层 ,而雅西措群主要来自于南部的唐古拉、白日榨加和黑石山 -高山造山带 ,剥蚀深度加大至石炭—二叠纪地层 .它们的沉积演化过程是盆地南部造山带老第三纪构造隆升持续加强的结果 ,表明在雅西措群沉积时期青藏高原北部已经隆升至一定的高度 . 相似文献
15.
系统分析青藏高原新生代中新世50余个沉积盆地的类型、构造背景、岩石地层序列,对青藏高原中新世构造岩相古地理演化特征进行分析和探讨。中新世,青藏高原海相沉积已经全面退出,全部转为陆相沉积,约23Ma时高原及周边不整合面广布,标志高原整体隆升。塔里木、柴达木及西宁-兰州、羌塘、可可西里等地区主体表现为大面积的构造压陷湖盆沉积。约17.2Ma左右,阿尔金山显著隆升,使柴达木盆地西叉沟一带再无生物礁灰岩出现,且在盆地西部出现了短暂的沉积间断。这一时期,柴达木盆地西部开始进入湖退期,而东南部则快速湖进;同时,大约17.7Ma索尔库里山间盆地初始凹陷形成。另外,高原腹地五道梁-沱沱河盆地受南部唐古拉山的挤压抬升,在16Ma左右结束了五道梁组的沉积,在可可西里—唢呐湖一带则再次凹陷接受唢呐湖组沉积,形成高原腹地的大型压陷湖盆。13～10Ma期间,藏南南北向断陷盆地的形成,是高原隆升到足够高度开始垮塌的标志;约8Ma以来,高原东北部几乎所有湖盆均进入湖退期,普遍出现冲积扇、辫状河和水下扇砂砾岩堆积。 相似文献
16.
LIUZhifei WANGChengshan AlainTRENTESAUX ZHAOXixi YIHaisheng HUXiumian JINWei 《《地质学报》英文版》2003,77(4):504-513
Sedimentological, cyclic-stratigraphic, paleomagnetic, and clay-mineralogical studies on the early Oligocene Yaxicuo Group in the Hoh Xil Basin, the largest Cenozoic sedimentary basin in the hinterland of the Tibetan Plateau, provide abundant information of paleoclimate changes. A 350-m thick section in the middle-lower Yaxicuo Group was analyzed to reveal the climatic history that occurred in the Hoh Xil region during the early Oligocene interval 31.30-30.35 Ma, dated with the paleomagnetic chronostratigraphy. The results indicate that add and cold climate dominated the Hoh Xil region during the early Oligocene in general, being related to the global cooling and drying events that occurred in the earliest Oligocene. Within this period, relatively warm and wet climate accompanied by strong tectonic activity occurred in the 31.05-30.75 Ma interval; while add and cold climate and relatively inactive tectonics occurred in the 31.30-31.05 and 30.75-30.35 Ma intervals. Furthermore, spectral analyses of high-temporal resolution paleoclimatic records show orbital periods including eccentricity, obliquity, and precession. It is concluded that paleoclimate changes during the early Oligocene in the Hoh Xil region were forced by both tectonic activity and orbital periods. 相似文献
17.
Paleoclimate Changes during the Early Oligocene in the Hoh Xil Region, Northern Tibetan Plateau 总被引：2，自引：0，他引：2
Alain TRENTESAUX 《《地质学报》英文版》2003,77(4)
Sedimentological, cyclic-stratigraphic, paleomagnetic, and clay-mineralogical studies on the early Oligocene Yaxicuo Group in the Hoh Xil Basin, the largest Cenozoic sedimentary basin in the hinterland of the Tibetan Plateau, provide abundant information of paleoclimate changes. A 350-m thick section in the middle-lower Yaxicuo Group was analyzed to reveal the climatic history that occurred in the Hoh Xil region during the early Oligocene interval 31.30-30.35 Ma, dated with the paleomagnetic chronostratigraphy. The results indicate that arid and cold climate dominated the Hoh Xil region during the early Oligocene in general, being related to the global cooling and drying events that occurred in the earliest Oligocene. Within this period, relatively warm and wet climate accompanied by strong tectonic activity occurred in the 31.05-30.75 Ma interval; while arid and cold climate and relatively inactive tectonics occurred in the 31.30-31.05 and 30.75-30.35 Ma intervals. Furthermore, spectral analyses of hig 相似文献
18.
青藏高原北部可可西里盆地是高原腹地最大的第三纪沉积盆地，分布着厚度达5737.5m的新生代沉积。本文根据遍布整个盆地的野外实测剖面和地质观察点资料，采有典型剖面精确古地磁测年为基础的时间框架，开展沉积层序、岩笥特征、沉环境和古水流变化综合对比研究，将可可西里盆地新生代（约56Ma至约16Ma）划分为7个演化阶段，其中在30Ma至约23Ma期间盆地经历抬升变形，没有沉积作用发生。结果显示，前6个阶段（约56Ma至30Ma），盆地沉积中心逐渐向北、向东迁移，盆地南缘和西缘的构造逆冲作用逐步加强，而且在晚渐新世发生强烈南北向地壳缩短，反映青藏高原腹地早期隆升过程中依靠南北向地壳缩短和北东向逆冲扩展作用来实现的。在早中新世（约23Ma至约16Ma），盆地沉积物遭受低度变形，表明此期间高原以差异隆升为主。 相似文献
19.
NEW MAGNETOSTRATIGRAPHIC AND SEDIMENTOLOGIC RESULTS FROM TERTIARY SEDIMENTS OF THE HOH XIL BASIN, NORTHERN QINGHAI-TIBET PLATEAU: IMPLICATIONS FOR THE CENOZOIC TECTONIC HISTORY OF THE TIBET PLATEAU 相似文献
20.
DISCUSSION ABOUT THE PETROGENESIS OF THE CENOZOIC VOLCANIC ROCKS FROM YUMEN AND HOH XIL AREA, QINGHAI-TIBET PLATEAU 相似文献