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| 1 | Geochemistry, Geochronology and Lu-Hf Isotopes of Peraluminous Granitic Porphyry from the Walegen Au Deposit, West Qinling Terrane显示文摘Walegen Au deposit is closely correlated with granitic intrusions of Triassic age, which are composed of granite and quartz porphyries. Both granite porphyry and quartz porphyry consist of quartz, feldspar and muscovite as primary minerals. Weakly peraluminous granite porphyry(A/CNK=1.10–1.15) is enriched in LREE, depleted in HREE with Nb-Ta-Ti anomalies, and displays subduction-related geochemistry. Quartz porphyry is strongly peraluminous(A/CNK=1.64–2.81) with highly evolved components, characterized by lower TiO_2, REE contents, Mg~#, K/Rb, Nb/Ta, Zr/Hf ratios and higher Rb/Sr ratios than the granite porphyry. REE patterns of quartz porphyry exhibit lanthanide tetrad effect, resulting from mineral fractionation or participation of fluids with enriched F and Cl. LAICP-MS zircon U-Pb dating indicates quartz porphyry formed at 233±3 Ma. The ages of relict zircons from Triassic magmatic rocks match well with the detrital zircons from regional area. In addition, ε_(Hf)(t) values of Triassic magmatic zircons from the granite and quartz porphyries are -14.2 to -9.1(with an exception of +4.1) and -10.8 to -8.6 respectively, indicating a crustal-dominant source. Regionally, numerous Middle Triassic granitoids were previously reported to be formed under the consumption of Paleotethyan Ocean. These facts indicate that the granitic porphyries from Walegen Au deposit may have been formed in the processes of the closing of Paleotethyan Ocean, which could correlate with the arc-related magmatism in the Kunlun orogen to the west and the Qinling orogen to the east. | GUO Xianqing YAN Zhen Jonathan C.AITCHISON FU Changlei WANG Zongqi | 2017 | Acta Geologica Sinica(English Edition)2017，91，6： | 3 |
| 2 | Silurian Sedimentation in the South Qilian Belt: Arc-Continent Collision-related Deposition in the NE Tibet Plateau?显示文摘The South Qilian belt mainly comprises an early Paleozoic arc-ophiolite complex, accretionary prism, microcontinental block, and foreland basin. These elements represent accretion-collision during Cambrian to Silurian time in response to closure of the Proto-Tethyan Ocean in the NE of the present-day Tibet Plateau. Closure of the Proto-Tethyan Ocean between the Central Qilian block and the Oulongbuluke block and the associated collision took place from NE to SW in a zipper-like style. Sediment would have been dispersed longitudinally SW-ward with a progressive facies migration from marginal alluvial sediments toward slope deep-water and deep-sea turbidites. This migration path indicates an ocean basin that shrank toward the SW. The Balonggongga'er Formation in the western South Qilian belt represents the fill of a latest Ordovician-Silurian remnant ocean basin that separated the Oulongbuluke block from the Central Qilian block, and records Silurian closure of the Proto-Tethyan Ocean and subduction beneath the Central Qilian block. However, alluvial deposits in the Lajishan area were accumulated in a retro-foreland basin, indicating that continent-continent collision in the eastern South Qilian belt occurred at c. 450–440 Ma. These results demonstrate that the Proto-Tethyan Ocean closed diachronously during early Paleozoic time. | YAN Zhen FU Changlei Jonathan CAITCHISON ZHOU Renjie Solomon BUCKMAN CHEN Lei | 2020 | Acta Geologica Sinica(English Edition)2020，94，4： | 2 |
| 3 | Visible Raman and Brillouin lasers from a microresonator/ZBLAN-fiber hybrid system显示文摘Raman and Brillouin lasers based on a high-quality(high-Q) whispering gallery mode microresonator(WGMR)are usually achieved by employing a tunable single-frequency laser as a pump source. Here, we experimentally demonstrate visible Raman and Brillouin lasers using a compact microresonator/ZrF4-BaF2-LaF3-AlF3-NaF(ZBLAN)-fiber hybrid system by incorporating a WGMR with a fiber-compatible distributed Bragg reflector/fiber Bragg grating to form a Fabry–Perot(F-P) fiber cavity and using a piece of Pr:ZBLAN fiber as gain medium.The high-Q silica-microsphere not only offers a Rayleigh-scattering-induced backreflection to form the ~635 nm red laser oscillation in the F-P fiber cavity, but also provides a nonlinear gain in the WGMR itself to generate either stimulated Raman scattering or stimulated Brillouin scattering. Up to six-order cascaded Raman lasers at0.65 μm, 0.67 μm, 0.69 μm, 0.71 μm, 0.73 μm, and 0.76 μm are achieved, respectively. Moreover, a Brillouin laser at 635.54 nm is clearly observed. This is, to the best of our knowledge, the first demonstration of visible microresonator-based lasers created by combining a Pr:ZBLAN fiber. This structure can effectively extend the laser wavelength in the WGMR to the visible waveband and may find potential applications in underwater communication, biomedical diagnosis, microwave generation, and spectroscopy. | SHUISEN JIANG CHANGLEI GUO KAIJUN CHE ZHENGQIAN LUO TUANJIE DU HONGYAN FU HUIYING XU ZHIPING CAI | 2019 | Photonics Research2019，7，5： | 1 |
| 4 | Dpaper:An Authoring Tool for Extractable Digital Papers显示文摘Purpose:To develop a structured,rich media digital paper authoring tool with an objectbased model that enables interactive,playable,and convertible functions.Design/methodology/approach:We propose Dpaper to organize the content(text,data,rich media,etc.) of dissertation papers as XML and HTML5 files by means of digital objects and digital templates.Findings:Dpaper provides a structured-paper editorial platform for the authors of Ph Ds to organize research materials and to generate various digital paper objects that are playable and reusable.The Ph D papers are represented as Web pages and structured XML files,which are marked with semantic tags.Research limitations:The proposed tool only provides access to a limited number of digital objects.For instance,the tool cannot create equations and graphs,and typesetting is not yet flexible compared to MS Word.Practical implications:The Dpaper tool is designed to break through the patterns of unstructured content organization of traditional papers,and makes the paper accessible for not only reading but for exploitation as data,where the document can be extractable and reusable.As a result,Dpaper can make the digital publishing of dissertation texts more flexible and efficient,and their data more assessable.Originality/value:The Dpaper tool solves the challenge of making a paper structured and object-based in the stage of authoring,and has practical values for semantic publishing. | Xiaoqiu Le Chenyu Mao Yuanbiao He Changlei Fu Liyuan Xu | 2016 | Journal of Data and Information Science2016，1，1： | 0 |
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