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    题名 作者 年代 出处 被引量
1U-Pb zircon dating of Early Paleozoic gabbro from the Nantinghe ophiolite in the Changning-Menglian suture zone and its geological implication显示文摘The Nantinghe ophiolite is located in the northern part of the Changning-Menglian suture zone in southeast Tibet. It is composed of meta-peridotite, cumulative gabbro, meta-gabbro, plagioclase amphibolite and meta-basalt. Zircon U-Pb dating of the cumulative gabbro gives concordant ages of 473.0±3.8 Ma and 443.6±4.0 Ma respectively, indicating the early and late episodes of mafic magmatisms during the Paleo-Tethys oceanic rifting. The 16 LA-ICPMS zircon U-Pb analyses of meta-gabbro yield a weight mean age of 439±2.4Ma. The gabbro shows relatively low contents of SiO2 (46.46%-52.11%), TiO2 (0.96%-1.14%) and K2O (0.48%-0.75%). Its trace element distribution patterns are partly similar to those of the mid-ocean ridge basalts, and part is depleted in high field strength elements such as Nb, Ta, Zr, Hf and Ti. These features suggest that the mafic rocks were probably formed in a MORB-like or backarc rift basin setting. The zircon U-Pb age of gabbro is consistent with a late crystallization age of the cumulative gabbro from the Nantinghe ophiolite, suggesting that the Paleo-Tethys oceanic basin was opened during 444-439 Ma, possibly as a backarc basin. It is the first precise age which defines the formation time of the early Paleozoic ophiolite in the Changning-Menglian suture zone. These geochronological and geochemical characteristics of the Nantinghe ophiolite are consistent with those from the Guoganjianianshan and Taoxinghu of the Longmu Co-Shuanghu suture in the Qiangtang region. Thus, we suggest that the both Changning-Menglian and Longmu Co-Shuanghu sutures were probably transformed from the relic oceanic crust of the uniform Paleo-Tethys, which likely represents the original and main Paleo-Tethys oceanic basin.WANG BaoDi WANG LiQuan PAN GuiTang YIN FuGuang WANG DongBing TANG Yuan 2013Chinese Science Bulletin2013,58,8:54
2Chronology and Geochemistry of the Nadingcuo Volcanic Rocks in the Southern Qiangtang Region of the Tibetan Plateau:Partial Melting of Remnant Ocean Crust along the Bangong-Nujiang Suture显示文摘计算碱的岩石主要 trachyte 和 trachyandesite 填写了的 Nadingcuo high-K 是在在西藏的高原的南部的 Qiangtang 岩层的暴烈的岩石的最大的露头区域。然而,他们的准确来源和 peterogenesis 仍然被辩论。40Ar-39Ar 和 LAM-ICPMS 锆石 U-Pb 同位素的标明日期证实这些岩石爆发了在始新世。另外, Nadingcuo 暴烈的岩石被高 Sr/Y 内容比率描绘,与从海洋的外壳的部分融化导出的 adakite 类似。他们能进一步作为高 Mg#(Mg#= 4857 ) 和低 Mg#(Mg#= 3342 ) 被分类子类型。Nadingcuo adakitic 岩石有相对低(87Sr/86Sr ) 我和高 Nd (t) ,显示出类似的一个趋势到在 Bangong-Nujiang 海洋的外壳中在场的 Dongcuo ophiolite。简单建模显示 Nadingcuo adakitic 岩石是与 10%20% 源于 Bangong-Nujiang 海洋的暗岩的混合拉萨岩层的外壳的材料。在这些底上,我们建议低 Mg# Nadingcuo adakitic 岩石是残余的部分融化的产品有小沉积的海洋的外壳,和高 Mg# 岩石是在升起之间的反应的结果残余融化有 subducted 的海洋的外壳沉积和披风楔。因此, Nadingcuo adakitic 岩石的起源可能与印度亚洲的碰撞在新生代期间触发的 intracontinental subduction 有关。WANG Baodi CHEN Jianlin XU Jifeng WANG Liquan ZENG Qinggao DONG Yanhui 2010Acta Geologica Sinica(English Edition)2010,84,6:15
3Petrogenesis and Tectonic Implications of the Paiku Leucogranites,Northern Himalaya显示文摘The Himalayan leucogranites provide insights into the partial melting behavior of relatively deeper crustal rocks and tectono-magmatic history of the Himalayan Orogen. The Paiku leucogranites of northern Himalaya can be subdivided into two-mica leucogranite(TML), garnet-bearing leucogranite(GL), cordierite-bearing leucogranite(CL), and tourmaline-bearing leucogranite(TL). All of them are high-K, peraluminous, calc-alkalic to alkali-calcic rocks. They are enriched in light rare earth elements(LREE) and large ion lithophile elements(LILE), and show pronounced negative anomalies of Sr, Ba, K and Ti, but positive anomalies of Nb and Rb. LA-ICP-MS U-Pb zircon dating of one TML, one GL, and two CL samples yielded variable 206Pb/238U ages ranging from 23.6 to 16.1 Ma, indicating the Paiku leucogranites underwent a low degree of partial melting process. Combining with previous studies, we suggest the Paiku leucogranites were derived from partial melting of metasedimentary rocks of the Higher Himalayan Sequence(HHS). The GL and TL mainly resulted from the muscovite-dehydration melting, whereas the TML and CL were mainly derived from the biotite-dehydration melting. Finally, it is concluded that the Paiku leucogranites were probably formed during the subduction of the Indian crust.Zhengbin Gou Xin Dong Baodi Wang 2019Journal of Earth Science2019,30,3:3
4Information diffusion network inferring and pathway tracking显示文摘Network diffusion, such as spread of ideas, rumors, contagious disease, or a new type of behaviors, is one of the fundamental processes within networks. Designing effective strategies for influence spread maximization, rumor spread minimization, or epidemic immunization has attracted considerable research attention. However, a key challenge is that many times we can only observe the trace of contagion spreading across network, but the underlying network structure is unknown and the transmission rates between node pairs are unclear to us. In this paper, given the observed information cascades, we aim to address two problems:diffusion network structure inferring and information diffusion pathways tracking. We propose a novel probabilistic model called Network Inferring from Multidimensional Features of Cascades(NIMFC) which takes into account heterogeneous features, including temporal and topological features of cascades, node attributes, and information content, to infer the latent network structure and transmission rates of edges. Also, based on the inferred network structure, we may track diffusion pathways of a cascade in social networks. We use blocked coordinate descent method to learn a sparse estimation of the latent network. Our proposed model NIMFC is evaluated both on large synthetic and real-world data sets, and experimental results show that our method significantly outperforms state-of-the-art models both in terms of recovering the latent network structure and information pathway tracking.ZHOU DongHao HAN WenBao WANG YongJun YUAN BaoDi 2015Science China(Information Sciences)2015,58,9:3
5Geochemistry of the Eocene Felsic Porphyric Rocks and High-Mg Potassic Rocks along JARSZ:Implication for the Tectonic Evolution in Eastern Tibet显示文摘始新世 felsic porphyric 岩石和 high-Mg 钾的暴烈的岩石(HMPR ) 沿着 Jinshajiang-Ailao 掸人红河发生砍在东方西藏的地区(JARSZ ) 。与 HMPR ,它通常被相信从一个充实的披风被采购原料相比, felsic porphyric 岩石显示出类似的 K2O 内容,在 LREE 和 LILE 的丰富,特别地放射产生的同位素(例如 Sr 和 Nd )类似于前者的特征,与 HMPR 有关很可能暗示 felsic porphyric 岩石的产生,尽管他们两个都有清楚地不同的专业和踪迹元素作文。在在在东方西藏的 felsic porphyric 岩石和 HMPR 之间的空间时间的分发和类似的 Sr-Nd 特征的靠近的关系显示他们俩被一个类似的构造过程(事件) 可能形成。在南部、东方的西藏联合基本的堤,我们建议在南部的西藏的蘸北方的 Neo-Tethyan 平板的折断在 5040 妈期间, high-Mg 的触发的形成钾的岩浆。这由在 high-Mg 的更低的外壳,或分别结晶化中的 underplating HMPR 的部分融化导致了发展中的 felsic porphyric 岩浆生产钾的岩浆。平板在的折断始新世可能也贡献了与更早的 subduction 事件有关的丰富的形成矿石的材料,导致 porphyric 的形成在东方西藏扔 JARSZ。CHEN Jianlin XU Jifeng WANG Baodi KANG Zhiqiang 2010Acta Geologica Sinica(English Edition)2010,84,6:3
6Subduction and Collision of the Jinsha River Paleo-Tethys: Constraints from Zircon U-Pb Dating and Geochemistry of the Ludian Batholith in the Jiangda–Deqen–Weixi Continental Margin Arc显示文摘The Jiangda–Deqen–Weixi continental margin arc(DWCA) developed along the base of the Changdu–Simao Block and was formed as a result of the subduction of the Jinsha River Ocean Slab and the subsequent collision. The Ludian batholith is located in the southern part of the DWCA and is the largest batholith in northwest Yunnan. Granite samples from the Ludian batholith yield an early Middle Permian age of 271.0 ± 2.8 Ma. The geochemical data of the early Middle Permian granitoids show high Si2 O, low P2 O5 and MgO contents that belong to calc-alkaline series and peraluminous I-type rocks. Their εHf(t) values range from-5.01 to +0.58, indicating that they were formed by hybrid magmas related to the subduction of the Jinsha River Tethys Ocean. The monzonite and monzogranite samples yield Late Permian ages of 250.6 ± 1.8 Ma and 252.1 ± 1.3 Ma, respectively. The Late Permian granitoids are high-K calc alkaline and shoshonite series metaluminous I-type rocks. Their εHf(t) values range from-4.12 to-1.68 and from-7.88 to-6.64, respectively. The mixing of crustal and mantle melts formed the parental magma of the Late Permian granitoids. This study, combined with previous work, demonstrates the process from subduction to collision of the Jinsha River Paleo-Tethys Ocean.HE Juan WANG Baodi WANG Qiyu 2020Acta Geologica Sinica(English Edition)2020,94,4:3
7Geochronology, Geochemistry, and Sr–Nd–Hf Isotopes of the Balazha Ore-Bearing Porphyries: Implications for Petrogenesis and Geodynamic Setting of Late Cretaceous Magmatic Rocks in the Northern Lhasa Block, Tibet显示文摘The study of Late Cretaceous magmatic rocks, developed as a result of magmatism and related porphyry mineralization in the northern Lhasa block, is of significance for understanding the associated tectonic setting and mineralization. This paper reports zircon chronology, zircon Hf isotope data, wholerock Sr–Nd isotope data, and geochemistry data of Balazha porphyry ores in the northern Lhasa block. Geochemical features show that Balazha ore-bearing porphyries in the northern Lhasa block belong to high-Mg# adakitic rocks with a formation age of ~90 Ma; this is consistent with the Late Cretaceous magmatic activity that occurred at around 90 Ma in the region. The age of adakitic rocks is similar to the molybdenite Re–Os model age of the ore-bearing porphyries in the northern Lhasa block, indicating that the diagenesis and mineralization of both occurred during the same magmatism event in the Late Cretaceous. The Hf and Sr–Nd isotope data indicate that these magmatic rocks are the product of crust–mantle mixing. Differing proportions of materials involved in such an event form different types of medium-acid rocks, including ore-bearing porphyries. Based on regional studies, it has been proposed that Late Cretaceous magmatism and porphyry mineralization in the northern Lhasa block occurred during collision between the Lhasa and Qiangtang blocks.LIU Wei WANG Baodi YANG Xiaoyong YUAN Sihua LIU Han LIAO Zhongli 2018Acta Geologica Sinica(English Edition)2018,92,5:2
8Formation of calcium phosphate mineral material controlled by microemulsion显示文摘In order to prepare calcium phosphate-based material with nano-structure and bioactivity, natural lecithin and n-tetradecane were used as the amphipile and the oil phase respectively, along with the water phase, to form a microemulsion template. Phosphate mineralization was induced and controlled by the microemulsion. The products, characterized by scanning electronic microscopy, infrared spectroscopy and X-ray diffraction analysis, are composed of lecithin and hydroxyapatite, and possess the nano-structure of sticks, balls and three-dimensional nets connected by tubes. These results show that the microemulsion can be used to control calcium phosphate mineralization for the preparation of biomimetic mineral materials with various nano-structures.LIU Jingzhou, GOU Baodi, XU Shanjin and WANG Kui(1. College of Material Science, Shanxi Normal University, Xi’an 710062, China 2. Department of Chemical Biology, Peking University School of Pharmaceutical Sciences, Beijing 100083, China) 2002Progress in Natural Science:Materials International2002,12,8:2
9In vitro activity of baicalein against Candida albicans biofilms显示文摘YingYing Cao BaoDi Dai Yan Wang Shan Huang YongGang Xu YongBing Cao PingHui Gao ZhenYu Zhu YuanYing Jiang 2008International Journal of Antimicrobial Agents2008,,1:1
10Different growing strategies of two winter wheat cultivars under rainfed conditions during dry years in North China Plain显示文摘The North China Plain(NCP)is a severe water shortage region,especially during the wheat growing season.Understanding the response of grain yield and water availability in winter wheat cultivars(Triticum aestivum L.)is important to adjust planting structure under groundwater reducible exploitation in rainfed dry years of NCP.Field experiments were conducted at the Luancheng Agroecosystem Experiment Station of the Chinese Academy of Sciences,Hebei,China.Two different drought resistant winter wheat cultivars(Jinmai47 and Shiluan02-1)were grown under rainfed conditions during four years of 2010-2011,2011-2012,2012-2013 and 2013-2014.Grain yield and its components,aboveground biomass(AB),dry matter accumulation translocation efficiency,water consumption,water use efficiency at field scale,and photosynthetic characteristics were measured.The results showed that Jinmai47 rapidly accumulated AB by higher tiller and photosynthetic potential comparing with those of Shiluan02-1.Its grain yield was 16.49%higher than that of the drought-sensitive winter wheat variety Shiluan02-1 during the four rainfed years.However,the dry matter remobilization efficiency(DMRE)and contribution of dry matter remobilization from heading stage to maturity stage to grain(CDMRE)of Shiluan02-1 was higher than those of Jinmai47.The average water use efficiency at grain yield level(WUEy),WUE at aboveground biomass level(WUEab),and WUE at grain yield under rainy conditions(WUEr)of Jinmai47 were 11.08%,16.41%,and 17.21%higher than those of Shiluan02-1.There was a significant difference in the WUEab and WUEr between the two wheat cultivars.The two wheat varieties under drought condition have different growing strategies.Jinmai47 has more tiller number,earlier vigor,and higher AB than Shiluan02-1,helping it to adapt to the fluctuations in the environment.Baodi Dong Hong Yang Yunzhou Qiao Mingming Zhang Yakai Wang Lele Jin Mengyu Liu 2018International Journal of Agricultural and Biological Engineering2018,11,5:0
11The Phytolith and Pollen Record since 10 ka BP from the Lhasa Region, Tibet显示文摘This paper presents a description of the river terrace at Tangjia Village in Lhasa, Tibet. Selected types of phytolith and pollen were used as proxies to study the paleoclimate in the study area. Ancient climate and vegetation changes since 10 ka BP were examined. The results demonstrated that between 10.2 and 8.9 ka BP, the dominating phytolith was the cold type and the dominating vegetation type was grassland-forest. This indicated that the climate changed from cool-humid to cool-dry and later turned back into a cool-humid climate. Between 8.9 and 8.1 ka BP,the main types of phytoliths were tooth, dumbbell, and polyhedral. This suggests that the vegetation consisted of forest-grassland and the period's climate had become warmer. Between 8.1 and 6.7 ka BP, the warm index of phytolith assembelage gradually increased, whereas the spore and pollen assembelage revealed that the vegetation was forest with hardwood. This suggested that the paleoclimate was warmest in this period. The herbaceous vegetation increased gradually, indicating that the climate had become colder since 7.5 ka BP. Between 6.7 and 4.6 ka BP, cold type phytolith such as tooth and cap were found. Simultaneously, the pollen assembelage indicated that the vegetation shifted from grassland to forest and then turned back into grassland. This implies that the climate fluctuated from cold-dry to cool- humid. Between 4.6 and 1.9 ka BP,the dominate type of phytolith was cold type and its warm index was in the range 0.04-0.28, suggesting a herbaceous vegetation cover and indicating that the climate was cold. The phytolith warm index from 1.9 ka BP revealed that the climate was continuously decreasing, and most of the pollen assembelage consisted of Chenopodiaceae and Artemisia. This conclusion is in agreement with the phytolith result that indicates that the climate was becoming colder and colder.CHEN Lingkang CHEN Haixia WANG Baodi WU Kaixing YU Jianxin GU Yansheng RUAN Linsen XIA Baoben XIN Zhonglei 2013Acta Geologica Sinica(English Edition)2013,87,2:0
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