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Reconstruction the Process of Partial Melting of the Retrograde Eclogite from the North Qaidam,Western China: Constraints from Titanite U-Pb Dating and Mineral Chemistry

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Journal of Earth Science 2019年第6期30卷 1166-1177页

作者： Yuting Cao Liang Liu wenqiang yang Yuan Gao Xiaohui Zhu Shandong Key Laboratory of Depositional Mineralization and Sedimentary Minerals Shandong University of Science and TechnologyQingdao 266590China Key Laboratory of Deep-Earth Dynamics of Ministry of Natural Resources Institute of GeologyChinese Academy of Geological SciencesBeijing 100037China State Key Laboratory of Continental Dynamics Department of GeologyNorthwest UniversityXi'an 710069China XVan Center of Geological Survey China Geological SurveyXi'an 710054China

Retrograde eclogite and garnet amphibolite of the Lüliangshan unit of the Shenglikou area,North Qaidam,were studied with emphasis on rutile and titanite.A special focus is on the formation of rutile and its corona of titanite(Ttn1)in retrograde eclogite and on coarse-grained titanite(Ttn2)from the garnet *** zirconium(Zr)-in-rutile and Zr-in-titanite thermometers,the temperatures estimated for the formation of an early generation of rutile are 823–884℃at 2.5–2.8 GPa,while 812–894℃at 1.3–1.5 GPa are derived for the formation of coronitic Ttn1 in the retrograde ***,isothermal decompression must have occurred during exhumation,which also has triggered the partial melting of the retrograde ***2 of the garnet amphibolite has high REE contents and high Th/U ratios,indicating that it is newly grown from a Ti,Ca,and LREE enriched anatectic melt derived from the partial melting of retrograde ***-ICP MS U-Pb dating yields a lower intercept age of 423±4 Ma for Ttn2,which is consistent with the granulite-facies metamorphic age of the retrograde ***,a temperature of 781–823℃at 1.0–1.2 GPa is obtained for Ttn2,which fits the P-T conditions of the HP granulite-facies metamorphic stage(P=1.07–1.24 GPa and T=774–814℃),and documents that the crystallization of the melt occurred at the granulite-facies stage at 423 *** high amount of REE of the garnet amphibolite is a consequence of the formation of Ttn2 from the *** contents and ratios of Zr and Hf in rutile and Ttn2 differ from those in the garnet amphibolite,and the whole rock Zr/Hf ratios of retrograde eclogite and garnet amphibolite are both higher than the respective ratios in rutile and Ttn2,suggesting that rutile and titanite cannot be the major carriers of Zr and Hf accounting for the high whole rock Zr/Hf ratios.

关键词： North Qaidam titanite U-Pb dating partial melting isothermal decompression element fractionation

Zircon U-Pb Geochronological Evidence for the Evolution of the Nan-Uttaradit Suture in Northern Thailand

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Journal of Earth Science 2016年第3期27卷 378-390页

作者： wenqiang yang Xin Qian Qinglai Feng Shangyue Shen Chongpan Chonglakmani Wuhan Center of Geological Survey Wuhan 430205China State Key Laboratory of Geological Processes and Mineral Resources China University of GeosciencesWuhan 430074China School of Earth Sciences China University of GeosciencesWuhan 430074China School of Geotechnology Suranaree University of TechnologyNakhon Ratchasima 30000Thailand

The Nan-Uttaradit suture is marked by a narrow N-S trending and discontinuous ophiolite belt in northern Thailand. This suture zone is a mélange composed of gabbro, tholeiitic meta- basalt, andesite and radiolarian chert. Samples of gabbro and meta-basalt in the Nan-Uttaradit suture yield zircon U-Pb ages of 311±10 and 316±3 Ma, respectively, interpreted as the crystallization ages of the rocks, suggesting the Nan-Uttaradit Ocean existed in the Late Carboniferous. Our results indicate that the Nan-Uttaradit Ocean co-existed with the Ailaoshan-Jinshajiang Ocean to the north and was probably an along-strike extension of the latter.

关键词： Nan-Uttaradit suture ophiolite mélange zircon U-Pb age northern Thailand

Petrochemistry and Tectonic Setting of the Middle Triassic Arc-Like Volcanic Rocks in the Sayabouli Area,NW Laos

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Journal of Earth Science 2016年第3期27卷 365-377页

作者： Xin Qian Qinglai Feng Yuejun Wang wenqiang yang Chongpan Chonglakmani Denchok Monjai State Key Laboratory of Geological Processes and Mineral Resources China University of GeosciencesWuhan 430074China School of Earth Sciences China University of GeosciencesWuhan 430074China School of Earth Science and Geological Engineering Sun Yat-sen UniversityGuangzhou 510275China CAS Center for Excellence in Tibetan Plateau Earth Sciences Beijing 100101China Wuhan Center of Geological Survey Wuhan 430205China School of Geotechnology Suranaree University of TechnologyNakhon Ratchasima 30000Thailand

The volcanic rocks from the Sayabouli area in northwestern Laos have been poorly studied. These volcanic rocks are traditionally mapped as the Permian–Early Triassic sequences on the geological map. One basaltic-andesite from the Sayabouli area yields a zircon U-Pb age of 237.7±1.7 Ma, suggesting a Middle Triassic origin. All basalt and basaltic-andesite samples from the Sayabouli area show depletions in HFSEs（e.g., Nb, Ta, Ti） and have high LILE/HFSE ratios, and exhibit the geochemical affinity to the continental arc volcanic rocks and are geochemically similar to the continental arc volcanic rocks from the Phetchabun belt in northeastern Thailand, suggesting a Late Permian–Middle Triassic continental margin in the Sayabouli area of northwestern Laos and Phetchabun area of northeastern Thailand. Our data indicate that the Phetchabun arc volcanic belt through the western Loei sub-belt can be linked to the Sayabouli area in northwestern Laos.

关键词： volcanic rock geochemical characteristics zircon U-Pb age Middle Triassic Sayabouli northwestern Laos

Geochemical characteristics of island-arc volcanic rocks in the Nan-Nam Pat-Phetchabun zone,northern Thailand

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Chinese Journal Of Geochemistry 2010年第4期29卷 337-342页

作者： SHEN Shangyue FENG Qinglai yang wenqiang ZHANG Zhibin Chongpom Chonglakmani State Key Laboratory of GPMR China University of Geology Hubei Wuhan 430074 China Institute of Regional Geology Yunnan Bureau of Geology and Mineral Resources Yunnan Yuxi 653110 China School ofGeotechnology Suranaree University of Technology Thailand

Late Permian-Early Triassic(P2-T1) volcanic rocks distributed on the eastern side of ocean-ridge and oceanic-island basalts in the Nan-Uttaradit zone were analyzed from aspects of petrographic characteristics,rock assemblage,REE,trace elements,geotectonic setting,etc.,indicating that those volcanic rocks possess the characteristic features of island-arc volcanic *** volcanic rock assemblage is basalt-basaltic *** volcanic rocks are sub-alkaline,dominated by calc-alkaline series,with tholeiite series coming *** chemical composition of the volcanic rocks is characterized by low TiO2 and K2O and high Al2O3 and *** REE patterns are of the flat,weak LREE-enrichment right-inclined *** trace elements are characterized by the enrichment of large cation elements such as K,Rb and Ba,common enrichment of U and Th,and depletion of Nb,Ta,Zr and *** petrochemical plot falls within the field of volcanic rocks,in consistency with the plot of island-arc volcanic rocks in the Jinsha River zone of *** island-arc volcanic zone,together with the ocean-ridge/oceanic island type volcanic rocks in the Nan-Uttaradit zone,constitutes the ocean-ridge volcanic rock-island-arc magmatic rock zones which are distributed in pairs,indicating that the oceanic crust of the Nan-Uttaradit zone once was of eastward *** work is of great significance in exploring the evolution of paleo-Tethys in the Nan-Uttaradit zone.

关键词：岛弧火山岩地球化学特征 Al2O3含量岩石学特征洋岛玄武岩玄武安山岩钙碱性系列泰国

Boosting C–C coupling to multicarbon products via high-pressure CO electroreduction

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Journal of Energy Chemistry 2023年第10期85卷 102-107,I0005页

作者： wenqiang yang Huan Liu Yutai Qi Yifan Li Yi Cui Liang Yu Xiaoju Cui Dehui Deng State Key Laboratory of Catalysis Collaborative Innovation Center of Chemistry for Energy MaterialsDalian Institute of Chemical PhysicsChinese Academy of SciencesDalian 116023LiaoningChina University of Chinese Academy of Sciences Beijing 100049China Vacuum Interconnected Nanotech Workstation Suzhou Institute of Nano-Tech and Nano-BionicsChinese Academy of SciencesSuzhou 215123JiangsuChina

Electrochemical CO reduction reaction(CORR) provides a promising approach for producing valuable multicarbon products(C_(2+)), while the low solubility of CO in aqueous solution and high energy barrier of C–C coupling as well as the competing hydrogen evolution reaction(HER) largely limit the efficiency for C_(2+)production in CORR. Here we report an overturn on the Faradaic efficiency of CORR from being HER-dominant to C_(2+)formation-dominant over a wide potential window, accompanied by a significant activity enhancement over a Moss-like Cu catalyst via pressuring CO. With the CO pressure rising from 1 to 40 atm, the C_(2+)Faradaic efficiency and partial current density remarkably increase from 22.8%and 18.9 mA cm^(-2)to 89.7% and 116.7 mA cm^(-2), respectively. Experimental and theoretical investigations reveal that high pressure-induced high CO coverage on metallic Cu surface weakens the Cu–C bond via reducing electron transfer from Cu to adsorbed CO and restrains hydrogen adsorption, which significantly facilitates the C–C coupling while suppressing HER on the predominant Cu(111) surface, thereby boosting the CO electroreduction to C_(2+)activity.

关键词： CO electroreduction High pressure electrochemistry Cu catalyst C–C coupling Multicarbon products

Discovery of coesite in eclogite from Keqike Jianggalesayi: new evidence for ultrahigh-pressure metamorphism in South Altyn Tagh, northwestern China

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Science Bulletin 2017年第15期62卷 1048-1051页

作者： Yongsheng Gai Liang Liu Chao Wang wenqiang yang Lei Kang Yuting Cao Xiaoying Liao State Key Laboratory of Continental Dynamics Department of Geology Northwest University College of Earth Science and Engineering Shandong University of Science and Technology

Coesite is a polymorph of Si O2formed at speci?c high-pressure conditions, and its presence in some crustal rocks as relicts marks the exhumation of deep subducted material to mantle depths, thus providing robust evid... 详细信息

关键词：超高压变质作用柯石英榴辉岩中国西北证据阿尔金地球动力学模型岩石圈板块 SiO2

Characteristics of N^(6)-methyladenosine Modification During Sexual Reproduction of Chlamydomonas reinhardtii

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Genomics, Proteomics & Bioinformatics 2023年第4期21卷 756-768页

作者： Ying Lv Fei Han Mengxia Liu Ting Zhang Guanshen Cui Jiaojiao Wang Ying yang Yun-Gui yang wenqiang yang Photosynthesis Research Center Key Laboratory of PhotobiologyInstitute of BotanyChinese Academy of SciencesBeijing 100093China China National Botanical Garden Beijing 100093China College of Advanced Agricultural Sciences University of Chinese Academy of SciencesBeijing 100049China CAS Key Laboratory of Genomic and Precision Medicine Beijing Institute of GenomicsChinese Academy of Sciences and China National Center for BioinformationBeijing 100101China Sino-Danish College University of Chinese Academy of SciencesBeijing 100049China Institute of Stem Cell and Regeneration Chinese Academy of SciencesBeijing 100101China Innovative Academy of Seed Design Chinese Academy of SciencesBeijing 100093China

The unicellular green alga Chlamydomonas reinhardtii(hereafter Chlamydomonas)possesses both plant and animal attributes,and it is an ideal model organism for studying fundamental processes such as photosynthesis,sexual reproduction,and life cycle.N^(6)-methyladenosine(m^(6)A)is the most prevalent mRNA modification,and it plays important roles during sexual reproduction in animals and ***,the pattern and function of m^(6)A modification during the sexual reproduction of Chlamydomonas remain ***,we performed transcriptome and methylated RNA immunoprecipitation sequencing(MeRIP-seq)analyses on six samples from different stages during sexual reproduction of the Chlamydomonas life *** results show that m^(6)A modification frequently occurs at the main motif of DRAC(D=G/A/U,R=A/G)in Chlamydomonas ***,m^(6)A peaks in Chlamydomonas mRNAs are mainly enriched in the 30 untranslated regions(30 UTRs)and negatively correlated with the abundance of transcripts at each *** particular,there is a significant negative correlation between the expression levels and the m^(6)A levels of genes involved in the microtubule-associated pathway,indicating that m^(6)A modification influences the sexual reproduction and the life cycle of Chlamydomonas by regulating microtubule-based *** summary,our findings are the first to demonstrate the distribution and the functions of m^(6)A modification in Chlamydomonas mRNAs and provide new evolutionary insights into m^(6)A modification in the process of sexual reproduction in other plant organisms.

关键词： N6-methyladenosine m^(6)A sequencing Sexual reproduction Microtubule-associated pathway Photosynthesis Chlamydomonas reinhardtii

Multi-Stage Metamorphism of the UHP Pelitic Gneiss from the Southern Altyn Tagh HP/UHP Belt,Western China:Petrological and Geochronological Evidence

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Journal of Earth Science 2019年第3期30卷 603-620页

作者： Yuting Cao Liang Liu Chao Wang Cong Zhang Lei Kang wenqiang yang Xiaohui Zhu Shandong Provincial Key Laboratory of Depositional Mineralization & Sedimentary Minerals College of Earth Science & Engineering Shandong University of Science and Technology Qingdao 266590 China State Key Laboratory of Continental Dynamics Department of Geology Northwest University Xi'an 710069 China Key Laboratory of Deep-Earth Dynamics of Ministry of Natural Resources Institute of Geology Chinese Academy of Geological Sciences Beijing 100037 China Xi'an Center of Geological Survey China Geological Survey Xi'an 710054 China

The kyanite-bearing garnet pelitic gneiss from the Jianggalesavi area in southern Altyn Tagh high pressure/ultra-high pressure belt was proved to have been experienced UHP metamorphism (>12 GPa) by the discovery of kyanite and spinel exsolution microstructure in quartz (precursor stishovite). In this study, three stages of retrograded metamorphism (M2-M4) after the UHP metamorphism (Ml) were identified for the UHP pelitic gneiss. The HP granulite-facies stage (M2) was characterized by the mineral assemblage of garnet+kyanite+K?feldspar+nitile+qiiartz±ilinenite, recording the P-T condition of >1.12 GPa and ?850-930℃. The granulite-facies stage (M3) was represented by the mineral assemblage of garnet rim+K-feldspar+sillimanite (SillJ+biotite (Bti)+plagioclase (Pli)+ilmenite+quartz, and confined under P-T conditions of 0.5-0.8 GPa and^770-795℃. The late cooling stage M4 was accompanied by the appearance of fine-grained Pl2, Sill2 and Bt2 in the matrix, and the P-T conditions were 0.4-0.6 GPa and 350 km) to the lower crust depth (-40-20 km), resulting in an average exhumation rate of 9.11-9.70 mm/yr. In the southern Altyn Tagh region, the HP and UHP rocks from different areas had identical peak metamorphic ages. Therefore, contemporary UHP and HP rocks with different metamorphic evolutions were recognized coexisting in the same orogenic belt, which can be interpreted by the model of subduction channel. The continental crustal were subducted to different dept

关键词： southern Altyn Tagh HP/UHP belt kyanite-bearing garnet pelitic gneiss P-T pseudosection subduction channel continental deep subduction and exhumation

Study on the geochemical characteristics of ocean-ridge and oceanic-island volcanic rocks in the Nan-Uttaradit zone, northern Thailand

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Chinese Journal Of Geochemistry 2010年第2期29卷 175-181页

作者： SHEN Shangyue FENG Qinglai yang wenqiang ZHANG Zhibin Chong pom Chong lakmani State Key Laboratory of GPMR China University of Geology Wuhan 430074 China Institute of Regional Geology Yunnan Bureau of Geology and Mineral Resources Yuxi 653110 China Suranaree University of Technology Thailand

Field investigations and laboratory integrated research as indicated that ophiolite mélange in the Nan-Uttaradit zone, northern Thailand, consists of fragments of tectonites such as metamorphic peridotite (extremely silicified serpentinite), cumulates (pyroxenolite, gabbro, and gabbro-diorite), ocean-ridge basalt, oceanic-island ba-salt and radiolarian silicalite, and it was formed during D3-P. The rock series, rock types and petrogeochemical characteristics of metamorphic tholeiites in the Nan area of the Nan-Uttaradit zone are similar to those of ocean-ridge basalts (C1) in China's Ailaoshan zone. As for the Hawaiites in the Nan area of the Nan-Uttaradit zone, their major elements, REEs and trace elements are similar to those of oceanic-island basalts in China's Jinshanjiang zone (P11). In the Uttaradit area of this zone the metamorphic alkaline basalts show transitional petrogeochemical characteristics between ocean-ridge basalts and oceanic-island basalts, which were still formed in oceanic-island environments. The above-described basalts are all oceanic volcanic rocks and they are the most important part of the Paleo-Tethys oceanic crust in the Nan-Uttaradit zone.

关键词：岩石地球化学特征洋岛玄武岩火山岩洋脊泰国放射虫硅质岩微量元素蛇绿混杂岩