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| 1 | In-situ trace element analyses of zircons from Dabieshan Huangzhen eclogite:Trace element characteristics of eclogite-facies metamorphic zircon显示文摘The internal structures of zircons in eclogite from Huangzhen have been studied by cathodoluminescence (CL) microscopy. Two growth stages were distinguished: protolith magmatic cores and metamorphic overgrowth rims. These different domains were analyzed for trace elements using LAM-ICP-MS. The protolith and the overgrowth zircons have different trace elements characteristics. The trace element contents of protolith zircons are high and very variable. The overgrowth zircons show a typical trace element feature of equilibrium with garnet, e.g. low contents of HREE (132.2-197.6μg/g) and small differential degree of HREE ((Yb/Gd)cN=8.6-11.9). The contents of Nb, Ta and the ratio of Nb/Ta are lower in the metamorphic domains (0.5-1.4μg/g, 0.7-1.5μg/g, 0.3-1.3, respectively) than in the protolith domains (3.8-19.7μg/g, 2.7-12.1μg/g, 1.0-4.6, respectively). This is the first time to give the evidence that the metamorphic zircon equilibrates with the rutile, which formed during the peak metamorphic stage. | WU Yuanbao CHEN Daogong XIA Qunke TU Xianglin CHENG Hao | 2002 | Chinese Science Bulletin2002,47,16: | 26 |
| 2 | Early Cenozoic Mega Thrusting in the Qiangtang Block of the Northern Tibetan Plateau显示文摘最近的印射和地震调查表明集中的压缩在在中央西藏的高原的 Qiangtang 块的早新生代期间形成了移动的戳表的广泛的建筑群沿着几个通常蘸北方的伟人相对向南方戳系统。那些在 450 km 的边阶宽块表演它制服拉萨块到南方并且被 Hohxil-Bayanhar 块制服到北方。系统主要是薄皮的与合拢联系使戳成鳞状。戳表主要是由显然在三叠纪的沙岩和页岩上滑动了的侏罗记石灰石的 floored,它局部地被包括,并且 ramped 向上并且过去古新始新世红床。在形成的古生代的变形岩石,二叠的碳酸盐和花岗石上面更深、带的铲起的一些中央戳一中央高举那把 Qiangtang 块划分成二部分。这些系统和他们的联系结构被很少 unconformably 覆盖使晚始新世渐新世的暴烈的岩石变形了或由中新世的湖床盖住。A 在邻近的拉萨块的北部分在块,以及块的北部分插入了系统,蘸到南方并且看起来由于在戳床单以内的第二等的调整。 | WU Zhenhan YE Peisheng Patrick J.BAROSH HU Daogong LU Lu ZHANG Yaoling | 2012 | Acta Geologica Sinica(English Edition)2012,86,4: | 23 |
| 3 | Late Jurassic-Early Cretaceous Plutonism in the Northern Part of the Precambrian North China Craton:SHRIMP Zircon U-Pb Dating of Diorites and Granites from the Yunmengshan Geopark,Beijing显示文摘The Yunmengshan Geopark in northern Beijing is located within the Yanshan range.It contains the Yunmengshan batholith,which is dominated by two plutons:the Yunmengshan gneissic granite and the Shicheng gneissic diorite.Four samples of the Yunmengshan gneissic granite give SHRIMP zircon U-Pb ages from 145 to 141 Ma,whereas four samples of the Shicheng gneissic diorite have ages from 159 Ma to 151 Ma.Dikes that cut the Yunmengshan diorite record SHRIMP zircon UPb age of 162±2 and 156±4 Ma.The cumulative plots of zircons from the diorites show a peak age of 155 Ma,without inherited zircon cores,and the peak age of 142 Ma for granite is interpreted as the emplacement age of the Yunmengshan granitic pluton,whose igneous zircons contain inherited zircon cores.The data presented here show that there were two pulses of magmatism:early diorites,followed c13 Ma later by true granites,which incorporated material from an older continental crust. | SHI Yuruo ZHAO Xitao MA Yinsheng HU Daogong LIU Qisheng WU Zhenhan ZHAO Yuanyi LIU Dunyi | 2009 | Acta Geologica Sinica(English Edition)2009,83,2: | 17 |
| 4 | Rapid Identification and Emergency Investigation of Surface Ruptures and Geohazards Induced by the M_s 7.1 Yushu Earthquake显示文摘基于 InSAR,技术被证明在我们表面破裂和 geohazards 的紧急情况调查有效的快速的鉴定由 Yushu 地震导致了。Yushu 地震的产生地震的差错是 Garz 瑩 ? 慲的 Yushu 节吗? | ZHANG Yongshuang YAO Xin XIONG Tanyu MA Yinsheng HU Daogong YANG Nong GUO Changbao | 2010 | Acta Geologica Sinica(English Edition)2010,84,6: | 17 |
| 5 | Late Quaternary normal faulting and its kinematic mechanism of eastern piedmont fault of the Haba-Yulong Snow Mountains in northwestern Yunnan, China显示文摘The regional geologic and geomorphic observations show that an active arcuate normal fault constitutes the main boundary fault of the Haba-Yulong Snow Mountains (HYSM). This fault is called eastern piedmont fault of Haba-Yulong Snow Mountains (HYPF). The fault consists of two segments with differential trend; the northern segment is NW-trending and NE-dipping and the southern section is S-N trending and E-dipping. Three sets of fault scarps cutting late Quaternary landforms and their dating results indicate that the fault is a prominent Holocene active fault and its throw rates are 0.3―1.4 mm/a during late Quaternary. The geometry and kinematics of the fault suggest that the arcuate normal faulting or rifting are typical surface deformation pattern at the two tips of the Z-shaped rift zone of northwestern Yunnan, which is related to regional east-west extension accompanying clockwise rota- tion of micro-block. | WU ZhongHai ZHANG YongShuang HU DaoGong ZHAO XiTao YE PeiSheng | 2009 | Science China Earth Sciences2009,52,10: | 14 |
| 6 | Early Cenozoic Tectonics of the Tibetan Plateau显示文摘Geological mapping at a scale of 1:250000 coupled with related researches in recent years reveal well Early Cenozoic paleo-tectonic evolution of the Tibetan Plateau. Marine deposits and foraminifera assemblages indicate that the Tethys-Himalaya Ocean and the Southwest Tarim Sea existed in the south and north of the Tibetan Plateau, respectively, in Paleocene-Eocene. The paleooceanic plate between the Indian continental plate and the Lhasa block had been as wide as 900km at beginning of the Cenozoic Era. Late Paleocene transgressions of the paleo-sea led to the formation of paleo-bays in the southern Lhasa block. Northward subduction of the Tethys-Himalaya Oceanic Plate caused magma emplacement and volcanic eruptions of the Linzizong Group in 64.5-44.3 Ma, which formed the Paleocene-Eocene Gangdise Magmatic Arc in the north of Yalung-Zangbu Suture (YZS), accompanied by intensive thrust in the Lhasa, Qiangtang, Hoh Xil and Kunlun blocks. The Paleocene-Eocene depression of basins reached to a depth of 3500-4800 m along major thrust faults and 680-850 m along the boundary normal faults in central Tibetan Plateau, and the Paleocene-Eocene depression of the Tarim and Qaidam basins without evident contractions were only as deep as 300-580 m and 600-830 m, respectively, far away from central Tibetan Plateau. Low elevation plains formed in the southern continental margin of the Tethy-Himalaya Ocean, the central Tibet and the Tarim basin in Paleocene-Early Eocene. The Tibetan Plateau and Himalaya Mts. mainly uplifted after the Indian-Eurasian continental collision in Early-Middle Eocene. | WU Zhenhan HU Daogong YE Peisheng WU Zhonghai | 2013 | Acta Geologica Sinica(English Edition)2013,87,2: | 9 |
| 7 | Quantitative Zoning Assessment of Crustal Stability Along the Yunnan-Tibet Railway Line,Western China显示文摘The planned Yunnan-Tibet railway goes through the northwest of Yunnan Province and the southeast of the Tibet Autonomous Region.Because of its location near the collision belt of the Eurasian and Indian plates,complex engineering geological conditions and difficult engineering geological problems are encountered.The study is aimed at making the zoning assessment of crustal stability along the railway line so as to provide a better base for its construction,especially its line selection.For this purpose,the following seven influencing factors of crustal stability were selected and quantified by grading and scoring:active fault,seismic activity,geo-stress field,geo-strain field, geothermal field,geo-hazard,and lithologic character.Of these factors,the active fault,seismic activity and geo-hazard are the three most prominent factors influencing the railway construction.Along the railway line there are 1731703 calculation units to be divided.The zoning assessment calculation was completed by ArcGIS-based information fusion method.The assessment results aid railway line selection and show that there are 10 stable sectors,28 relatively stable sectors,23 relatively unstable sectors,and 20 unstable sectors along the Yunnan-Tibet railway line. | ZHANG Yongshuang YAO Xin HU Daogong GUO Changbao XIONG Tanyu | 2012 | Acta Geologica Sinica(English Edition)2012,86,4: | 9 |
| 8 | Miocene Tectonic Evolution from Dextral-Slip Thrusting to Extension in the Nyainqentanglha Region of the Tibetan Plateau显示文摘在西藏的 Nyainqentanglha 区域的右滑倒导致了 obliqueunderthrusting 和花岗石产生在对中间早中新世,但是在时代底高举并且紧张的指责统治了的前。东方西方右滑倒 Gangdise 差错系统合并进东北趋势东方,转动东方更远的北方进右滑倒北方 Damxung 剪碎带和 Jiali 的蘸东南的 Nyainqentanglha 戳系统指责。这些差错是形成了由当西方的块不到东方的开车了,早, Miocene,和大 Nyainqentanglha 花岗石的底盘在 18.3-11.0 妈形成了戳系统。Thedextral 滑倒运动在~ 1 结束了 1 个妈和底盘玫瑰,由在 8.6-8.3 妈的重力的砍标记,一个新差错系统发展了。西北趋势右滑倒差错形成了到 raisen 底盘的西北,而有某左首滑倒的东北趋势南方 Damxung 上投断层形成了到东南。后者被 thewest-northwest-trending Lhiinzhub 上投断层被右滑倒远代替到东方。这相对本地高举让存款保存了的 Eocene 和 Miocene 邻近那被区域抬升和一个系统的开始跟随通常纵贯抓住 ens 在在~ 6 .5 晚中新世妈。Theregional 高举南部的西藏的高原因此看起来发生在 8.3 妈和 6.5Ma 之间。Gulu, Damxung-Yangbajain 和 Angan 在 NyainqentanglhaMountains 的通行证东方被更早的东北趋势差错局部地控制的系统抓住。这些抓住 ens 统治随后的构造运动并且山向西北作为西北趋势右滑倒差错仍然很活跃。Miocene 是迎来了现代构造政体的大构造变化的一时间。 | WU Zhenhan Patrick J. BAROSH ZHAO Xun WU Zhonghai HU Daogong LIU Qisheng | 2007 | Acta Geologica Sinica(English Edition)2007,81,3: | 8 |
| 9 | Osmium isotope determination on mantle-derived peridotite xenoliths from Panshishan with N-TIMS显示文摘The 187Os/ 188Os ratios of spinel lherzolite xenoliths from Panshishan determined with N-TIMS are lower than that of the primitive mantle, which shows depleted mantle characteristics. Their positive correlation with Al-2O-3/MgO suggests that the geochemical behavior of trace elements Re and Os is similar to that of Al-2O-3 and MgO respectively during the magmatic evolution and Re-Os isotopic system is largely immune to mantle metasomatism. A model age of 2 8-3 4 Ga obtained by 187Os/ 188Os-Al-2O-3/MgO correlation might represent the homogeneous age of the mantle lithosphere beneath the area. | Weidong Sun Zicheng Peng Xiachen Zhi Daogong Chen Zhaorong Wang Xinhua Zhou | 1998 | Chinese Science Bulletin1998,43,7: | 7 |
| 10 | Oxygen isotopic compositions of zircons from pyroxenite of Daoshichong, Dabieshan: Implications for crust-mantle interaction显示文摘Oxygen isotopic compositions of zircons from pyroxenite (-145 Ma) of Daoshichong, Dabieshan have been measured by an ion microprobe. Both within the single grain and among different grains, oxygen isotopic ratios are homogeneous, σ18O = (7.66‰±0.46)‰(1 SD, 1σ=0.10, n = 22). High σ18O values indicate that the mantle-derived parent magma of Daoshichong pyroxenite have undergone interaction with crustal materials. Combing with other geo-chemical constraints, the way of crust-mantle interaction is suggested to be source mixing other than crustal contamination. The time interval between crust-mantle interaction and formation of the parent magma of Daoshichong pyroxenite is less than several million years. The crustal component involving in crust-mantle interaction is mafic lower crust, and the parent magma of pyroxenite possibly contain large proportion (>37%) of such lower crust. | XIA Qunke E.Deloule WU Yuanbao CHEN Daogong CHENG Hao | 2002 | Chinese Science Bulletin2002,47,17: | 6 |
| 11 | Structural OH in mantle-derived clinopyroxene megacrysts from Nushan显示文摘Thirteen clinopyroxene megacrysts from Nushan Cenozoic basalts have been investigated by Fourier transform infrared spectrometer(FTIR). The results demonstrate that all samples contain trace amount of structural OH. Clinopyroxenes from Nushan show four groups of absorption bands, in which, 3 472-3 506 cm -1 is the major characteristic one. It is suggested that the position of major band is probably related to Al content: the position of major characteristic band for high_Al samples is around 3 470 cm -1 , whereas that for low_Al samples around 3 620 cm -1 . | Qunke Xia Daogong Chen Lihe Guo | 1998 | Chinese Science Bulletin1998,43,20: | 6 |
| 12 | Zircon SIMS ages and chemical compositions from Northern Dabie Terrain:Its implication for pyroxenite genesis显示文摘We present the results of a detailed micro-scale investigation of zircons from pyroxenites, Daoshicong Northern Dabie using a combination of SIMS and ICPMS. The SIMS measurements gave ages of 134-159 Ma. Its average of (144.516.2) Ma is interpreted as the best estimate of the pyroxenite intrusion. The crystallization of zircons continued for quite a long time and underwent slow cooling. The pyroxenites are products of post-collision magmatism. The REE pattern is HREE-enriched, and its HREE concentrations fall between the magmatic and metamorphic range of gneissic zircons from the Dabie area, which indicate the involvement of crust material in its mantle source. | CHEN Daogong WANG Xiang E.Deloule LI Binxian XIA Qunke CHENG Hao WU Yuanbao | 2001 | Chinese Science Bulletin2001,46,12: | 4 |
| 13 | Zircon SHRIMP U-Pb Dating, Geochemical Characteristics and Tectonic Significance of Granitic Gneisses in Amdo, Tibet显示文摘The Amdo microcontinent is located within the middle of Bangong-Nujiang suture(BNS) zone in the shape of lens. The basic geological research restricts geologists from understanding the histories of tectonic evolution of BNS and regional geology more deeply. This paper systematically studies the geochronology and geochemistry of granitic gneisses from Amdo basement. These data provide constraints on formation age, source characteristics and tectonic setting of their protolith. The SHRIMP zircon U-Pb dating is operated for granitic gneisses. Samples AGS-2 and AGS-3(granitic gneiss) yield average zircon U-Pb ages of 485±14 and 487±6 Ma, respectively. These ages should represent the formation age of protolith and indicate that they are formed in the Early Ordovician. Granitic gneisses are characterized by high SiO2, Na2O, K2O and Al2O3, low Fe and Mg, enrichment in light rare earth elements(LREEs) and large ion lithophile elements(LILEs), depletion in heavy rare earth elements(HREEs) and high field strength elements(HFSEs), with negative Eu anomaly. The Rittmann index(σ) is 1.77 to 2.60, less than 3.3. The aluminum saturation index(A/CNK) values range from 0.88 to 1.26. These features suggest that protolith of granitic gneisses from Amdo basement show characteristics of calc-alkaline and S-type granite, and they could be derived from partial melting of metamorphic greywackes in the upper crust of low maturity. The tectonic setting is syn-collision. These all suggest that the formation of protolith of granitic gneisses from Amdo are caused by the Early Paleozoic orogeny, which could be related to proto-Tethyan oceanic subduction along Gondwana continental margins, and does not result from the production of Pan-African orogenesis. | Lu Lu Zhenhan Wu Zhen Zhao Daogong Hu Peisheng Ye | 2014 | Journal of Earth Science2014,25,3: | 3 |
| 14 | Hydrogen isotope compositions of mantle-derived amphibole megacrysts from Qilin, Guangdong and its tectonic significance显示文摘Hydrogen isotope compositions of mantle-derived amphibole megacrysts from Qilin, Guang dong Province have been obtained by ion micro-probe. δD and H contents are constant both among different samples and within single sample, demonstrating that their formation condition is very stable.High δD values suggest the presence of a component recycled from crust which is possibly related to the subduction of Pacific Plate beneath Eurasian Plate in Mesozoic. | Qunke Xia Daogong Chen Deloule Etienne Xiachen Zhi | 1999 | Chinese Science Bulletin1999,44,5: | 2 |
| 15 | An evaluation of zircon U-Pb dating for metamorphic rocks and comments on zircon ages of Dabie orogen显示文摘 | Chen Daogong Li Binxian Xia Qunke Wu Yuanbao and Cheng Hao | | ACTA PETROLOGICA SINICA0,,: | 1 |
| 16 | Hazards posed by active major faults along the Golmud- Lhasa railway route, Tibetan Plateau, China显示文摘 | WU Zhenhan BAROSH P J HU Daogong | 2004 | Engineering Geology2004,74,34: | 1 |
| 17 | Hazards posed by active major faults along the Golmud-Lhasa railway route,Tibetan Plateau,China显示文摘 | Wu Zhenhan Barosh P J Hu Daogong | 2004 | Engineering Geology2004,74,: | 1 |
| 18 | Migrating pingos in the permafrost region of the Tibetan Plateau,China and their hazard along the Golmud-Lhasa railway显示文摘 | Wu Zhenhan Barosh P J Hu Daogong | 2005 | Engineering Geology2005,79,: | 1 |
| 19 | Hazards posed by active major faults along the Golnud-Lhasa railway route,Tibetan Plateau,China显示文摘 | Wu Zhenhan Barosh P J Hu Daogong | 2004 | Engineering Geology2004,74,16: | 1 |
| 20 | Hazards posed by active major faults along the Golmud-Lhasa railway route,Tibetan Plateau,China显示文摘 | Wu Zhenhan Barosh P J Hu Daogong | 2004 | Engineering Geology2004,74,: | 1 |