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| 1 | The timing of tectonic transition from compression to extension in Dabieshan: Evidence from Mesozoic granites显示文摘With the methods of single grain zircon U-Pb and hornblende-biotite Ar-Ar dating, a U-Pb zircon age (135.4(2.7) Ma of Liujiawa high Sr/Y granite and 40Ar-39Ar plateau ages (139.0(1.0) Ma and (125.3(0.2) Ma of hornblende and biotite respectively of Fenliupu high Sr/Y granite in the Dabieshan high- and ultrahigh-pressure metamorphic belt are yielded. Following the emplacement of the high Sr/Y granites, extension-related mafic intrusions and late granitoids with negative Sr and Eu anomalies and isotopic ages of 105-130 Ma were emplaced. Geochemical comparison between the two types of granitoids shows that, from early to late, the alkalinities, the K2O contents and the Sr/Y ratios as well as FeO/(FeO+MgO) ratios of the rocks increase, while the abundance of Sr reduces, suggesting that as time goes on the depth of crustal melting decreases. Rheological stratification of the crust due to early Cretaceous partial melting of crustal rocks resulted in crustal extension and deep-buried rock exhumation. Therefore, the high Sr/Y granite that appeared at ~135 Ma is the product of the tectonic transition from early shortening to late overall extension. | MA Changqian YANG Kunguang MING Houli LIN Guangchun | 2004 | Science China Earth Sciences2004，47，5： | 51 |
| 2 | Discovery of Paleoproterozoic rapakivi granite on the northern margin of the Yangtze block and its geological significance显示文摘The Huashanguan rapakivi pluton in Zhongxiang,Hubei Province,China,is the first discovered Proterozoic rapakivi pluton in the Yangtze block.Based on field and petrographical observations,a typical rapakivi texture was found in the northern portion of the Huashanguan granitic pluton.Almost all the K-feldspar phenocrysts were round to oval in shape and most had plagioclase coatings known as rapakivi phenocrysts.Alkali feldspars and quartz had two or more generations.Petrochemically,the Huashanguan rapakivi granites were characterized as having high values of Si,K,Fe,Th,U,La,Ga,Ce,Sm and LREE,low values of Ca,Mg,Sr,Nb,Y and HREE,and a negative Eu anomaly.These geochemical characteristics of the Huashanguan granites were concordant with typical rapakivi granites,and had an affinity to A-type granites.LA-ICP-MS U-Pb zircon dating also was conducted.The dating yielded a 207Pb/206Pb weighted mean age of 1851±18 Ma (MSWD =1.2),which represents the age of the pluton emplacement.The age of 803±170 Ma at the lower intercept in the concordia diagram corresponds to the age of a later deformation event which affected the pluton,and suggests that the Huashanguan pluton was influenced by Neoproterozoic thermo-tectonic events after its formation.The discovery of Paleoproterozoic Huashanguan rapakivi granites indicates continental rifting or a post-orogenic extensional event that took place in the Paleoproterozoic in the Yangtze block.These events may be related to the breakup of the Paleoproterozoic Columbia supercontinent. | ZHANG LiJuan MA ChangQian WANG LianXun SHE ZhenBing WANG ShiMing | 2011 | Chinese Science Bulletin2011，56，3： | 37 |
| 3 | Discovery of the Indosinian aluminum A-type granite in Zhejiang Province and its geological significance显示文摘Zircon LA-ICP-MS U-Pb dating of the Jingju syenogranites in the southwestern part of Zhejiang Province shows that these rocks were crystallized in the Late Triassic at 215±2 Ma, rather than in the Cretaceous as previously proposed. The Jingju syenogranites are characterized by relatively high K 2 O and FeO*, and low MgO. They have high concentrations of large ion lithophile elements (LIL) and LREE, such as K, Th, La, and Ce, but are depleted in high field strength elements (HFSE) such as Nb, Ta, and Ti. Their 10 4 Ga/Al ratios and (Zr+Nb+Ce+Y) contents are also high. These characteristics are similar to those of A-type granites. The syenogranites have high I Sr (0.7179-0.7203), low ε Nd (t) (from 14.2 to 13.2), and relatively old T 2DM ages, similar to those of the ancient metamorphic basement in the Cathaysia Block. It is suggested that the Jingju syenogranites were formed by partial melting of the Cathaysia basement rocks during tectonic extension. This identification of Indosinian A-type granite in Jingju has significant implications for understanding the early Mesozoic tectonic evolution of South China. | LI WanYou MA ChangQian LIU YuanYuan Paul T.ROBINSON | 2012 | Science China Earth Sciences2012，55，1： | 19 |
| 4 | Geochronology and Petrogenesis of Triassic High-K Calc-Alkaline Granodiorites in the East Kunlun Orogen,West China:Juvenile Lower Crustal Melting during Post-Collisional Extension显示文摘This study reports zircon U-Pb and Hf isotopes and whole-rock elemental data for granodiorites from the East Kunlun orogen. The zircon U-Pb dating defines their crystallization age of 235 Ma. The rocks are characterized by high-K calc-alkaline, magnesian and metaluminous with(K_2O+Na_2O)=6.38 wt.%–7.01 wt.%, Mg#=42–50 [Mg#=100×molar Mg/(Mg+Fe OT)], A/CNK=0.92–0.98, coupled with high εHf(t) values from-0.65 to-1.80. The rocks were derived from partial melting of a juvenile mafic crustal source within normal crust thickness. The juvenile lower crust was generated by mixing lithospheric mantle-derived melt(55%–60%) and supracrustal melt(40%–45%) during the seafloor subduction. Together with available data from the East Kunlun, it is proposed that the studied Middle Triassic granodiorites were formed in post-collisional extension setting, in which melting of the juvenile lower crust in response to the basaltic magma underplating resulted in the production of high-K granodioritic melts. | Fuhao Xiong Changqian Ma Hong’an Jiang Hang Zhang | 2016 | Journal of Earth Science2016，27，3： | 16 |
| 5 | The latest Yanshanian magmatic and metallogenic events in the middle-lower Yangtze River belt: Evidence from the Ningzhen region显示文摘The Ningzhen region in Jiangsu Province represents the easternmost magmatic region in the middle-lower Yangtze River belt.The formation of the polymetallic deposits has close genetic relationships with Early Cretaceous intermediate-acid intrusions.In this study,LA-ICP-MS zircon geochronology of two Mesozoic intermediate-acid intrusive rocks(including the Shima porphyritic granodiorite and Gaozi quartz diorite porphyry)in the Ningzhen region were systematically investigated.These new geochronological data demonstrate that the intermediate-acid magmatism in the Ningzhen region dates to approximately between 109 and101 Ma.We present new40Ar-39Ar phlogopite ages for the Cishantou skarn iron deposits that constrain the timing of the mineralisation in the Ningzhen region.The phlogopite in the Cishantou skarn deposits yielded a40Ar-39Ar plateau age of 104±1 Ma.This result coincides with the ages of the Anjishan and Tongshan Cu(Mo)deposits in the Ningzhen region.Our high-precision geochronological data together with recent high-precision geochronological studies(such as zircon LA-ICP-MS U-Pb,zircon SHRIMP U-Pb,molybdenite Re-Os and single-mineral40Ar-39Ar dates)reveal that there were four periods(152-135 Ma,135-127 Ma,127-121 Ma,109-101 Ma)of magmatism and ore formation in the middle-lower Yangtze River metallogenic belt.The Mesozoic intermediate-acid magmatism and mineralisation in the Ningzhen region belong to the latest episode in the middle-lower Yangtze River metallogenic belt. | SUN Yang MA ChangQian LIU YuanYuan | 2013 | Chinese Science Bulletin2013，58，34： | 13 |
| 6 | Zircon U-Pb Dating on Granitoids from the Northern South China Sea and its Geotectonic Relevance显示文摘163.8100.4 妈和 146.6134.5 妈的锆石 U-Pb 年龄分别地从珍珠河嘴盆,并且从南部的广东省为 granitoids 被获得。与结晶化好的这些新标明日期数据一致在 Nanling 广泛地 Yanshanian granitoids 变老。华南的活跃大陆人边缘由锆石 U-Pb 数据的联合揭示了在 165100 妈经历了关键统治 granitoid 的 magmatism。它的进化时间地,并且空间地变化了,登记在 paleo 和平的平板 subduction 控制下。从华南海广泛地发生在 165150 妈到 Nanling 的 granitoids 是最好与二个背景从有关对背弧扩展暴烈弧分别地。白垩纪 granitoids 的活动从东南的广东(148130 妈) 移居了到珍珠河嘴盆(127112 妈) ,相应于撤退 subduction 的模型。在华南的 subduction 相关的 granitoid magmatism 继续直到 10897 妈。到扩展的从 slab-subduction 的构造转变应该发生在 100 妈。 | SHI Hesheng XU Changhai ZHOU Zuyi MA Changqian | 2011 | Acta Geologica Sinica(English Edition)2011，85，6： | 12 |
| 7 | Genesis of Highly Fractionated I-Type Granites from Fengshun Complex:Implications to Tectonic Evolutions of South China显示文摘The South China Block is characterized by the large-scale emplacement of felsic magmas and giant ore deposits during the Yanshanian. We present zircon Hf isotopic compositions, whole-rock major and trace element compositions of the Fengshun complex, located in eastern Guangdong Province, South China. The Fengshun complex is a multi-stage magmatic intrusion. It is composed of two main units, i.e., the Mantoushan(MTS) syeno-monzogranites, alkali feldspar granites and the Hulutian(HLT) alkali feldspar granites. LA-ICPMS zircon dating shows that the complex emplaced in 166–161 and 139±2 Ma, respectively. Geochemically, the MTS granites show relatively various geochemical compositions with low REE contents(87.76×10^(-6)–249.71×10^(-6)), Rb/Sr ratios(1.19–58.93), pronounced Eu negative anomaly(0.01–0.37) and low Nb/Ta ratios(2.40–6.82). In contrast, the HLT granites exhibit relatively stable geochemical characteristics with high REE contents(147.35×10^(-6)– 282.17×10^(-6)), Rb/Sr ratios(2.05–10.30) and relatively high Nb/Ta ratios(4.45–13.00). The isotopic data of the MTS granites display relatively enriched values, with I_(Sr) varying from 0.708 2 to 0.709 7, εNd(t) from-7.8 to-6.9 and εHf(t) from-7.4 to-3.2, in comparison with those of the HLT which are I_(Sr)=0.703 05–0.704 77, εNd(t)=-5–-3.4 and εHf(t)=-0.7–1.8). The two-stage model ages of the MTS granites(T_(2DM)(Nd)=1.51–1.59 Ga and T_(2DM)(Hf)=1.26–1.48 Ga) are also higher than those of the HLT granites(T_(2DM)(Nd)=1.21–1.34 Ga and T_(2DM)(Hf)=0.96–1.10 Ga). Thus the MTS and HLT granites might originate from different sources. The former is more likely derived from partial melting of Meso-Proterozoic basement triggered by upwelling of asthenosphere and/or underplate of the basaltic magma and then extensive fractional crystallisation, similar to the genesis of Early Yanshanian granitoids of the EW-trending tectono-magmatism belt in the Nanling range. In comparison, the latter might have involved with asthenosphere component, similar to the Early Cretaceous granitoids of NE-NNE-trending granitoid-volcanic belt in coastal region, southeastern China. We propose that the MTS granites were mainly formed in Paleo-Tethyan post-orogenic extensional tectonic setting whereas the HLT granites were formed in the back-arc extensional tectonic setting. The period at 139 Ma represents the initial time of roll-back of the paleo-Pacific Plate in SE-trending. | Zuomin Zhou Changqian Ma Caifu Xie Lianxun Wang Yuanyuan Liu Wei Liu | 2016 | Journal of Earth Science2016，27，3： | 11 |
| 8 | Discovery and Significance of Diamonds and Moissanites in Chromitite within the Skenderbeu Massif of the Mirdita Zone Ophiolite,West Albania显示文摘In recent years diamonds and other unusual minerals(carbides,nitrides,metal alloys and native elements) have been recovered from mantle peridotites and chromitites(both high-Cr chromitites and high-Al chromitites) from a number of ophiolites of different ages and tectonic settings.Here we report a similar assemblage of minerals from the Skenderbeu massif of the Mirdita zone ophiolite,west Albania.So far,more than 20 grains of microdiamonds and 30 grains of moissanites(SiC) have been separated from the podiform chromitite.The diamonds are mostly light yellow,transparent,euhedral crystals,200~300 μm across,with a range of morphologies;some are octahedral and cuboctahedron and others are elongate and irregular.Secondary electron images show that some grains have well-developed striatums.All the diamond grains have been analyzed and yielded typical Raman spectra with a shift at ~1325 cm^(-1).The moissanite grains recovered from the Skenderbeu chromitites are mainly light blue to dark blue,but some are yellow to light yeUow.All the analyzed grains have typical Raman spectra with shifts at 766 cm^(-1),787 cm^(-1),and 967 cm^(-1).The energy spectrums of the moissanites confirm that the grains are composed entirely of silicon and carbon.This investigation expands the occurrence of diamonds and moissanites to Mesozoic ophiolites in the Neo-Tethys.Our new findings suggest that diamonds and moissanites are present,and probably ubiquitous in the oceanic mantle and can provide new perspectives and avenues for research on the origin of ophiolites and podiform chromitites. | WU Weiwei YANG Jingsui MA Changqian MILUSHI Ibrahim LIAN Dongyang TIAN Yazhou | 2017 | Acta Geologica Sinica(English Edition)2017，91，3： | 10 |
| 9 | Apatite-fission-track geochronology and its tectonic correlation in the Dabieshan orogen,central China显示文摘AFT data of granitoid and metamorphic samples from the Dabieshan orogen have an age range between 96.4 Ma and 41.9 Ma coupled with confined track lengths of 11.5—14.0 μm, reflecting the cooling time of rocks differentially through the 100℃± isotherm. The Juras- sic-Eogene sediments from the North Huaiyang and Hefei basin, however, yield their AFT ages of 128.8—62.0 Ma with mean track lengths of 8.6—11.9 μm, recording a complicated thermal de- velopment of the basin. These AFT data structurally allowing the coupling between the orogen and the basin are to a great extent considered as the result from the control of NNE-trending regional tectonics. It took place approximately at 95—90 Ma that the orogen developed with an abrupt shift from the doming extension to the differential transtension, which is assumed to be related with the changes of the convergence between the Western Pacific and Eurasia plates. The differentially sinistral strike-slipping from the transtension between Tanlu and Shang- cheng-Macheng faults brought the doming extension of the orogen shrunk sharply in Late Cre- taceous. In Eogene, the full-grown transtension that dominated in East Asia was caused mainly by a rapid decrease of the rates of the Western Pacific convergence, which can be therefore re- garded as a major mechanism creating the zonal anomalies of 60—40 Ma in the orogen. The thermal anomaly of 70—40 Ma zonally along the Tanlu fault cooled more slowly than the anomaly of 60—55 Ma zoning along the Shangcheng-Macheng fault, but the 60—40 Ma anomaly trending E-W in hinterlands of the orogen seems to be relicts of the doming extension as a result of inten- sive rebuilding by the transtension. In addition, the orogen was also reactivated by the far-field effect from India-Asia collision in Eogene, where major NWW-trending faults played an important role in facilitating such far-field tectonic transferring. In Oligocene to Miocene, the Dabieshan orogen remained a few thermal disturbances with their AFT ages particularly in coincidence with the time of opening and closing of the South China Sea. | P. Van Den Haute R. A. Donelick J. De Grave MA Changqian P. W. Reiners | 2005 | Science China Earth Sciences2005，48，4： | 9 |
| 10 | Silurian A-type granitoids in the southern margin of the Tongbai-Dabieshan: Evidence from SHRIMP zircon geochronology and geochemistry显示文摘SHRIMP U-Pb dating on magmatic zircons extracted from a riebeckite quartz syenite in the Huangyangshan pluton in Suizhou, the southern margin of Tongbai-Dabieshan yielded an age of 439±6Ma. According to the morphology and high Th/U ratios of the zircons, the age is interpreted as crystallization timing of the pluton. The Huangyangshan pluton is composed of peralkaline quartz syenite, alkaline granite and syenite. All of the rocks are characterized by high agpaitic index (A.I.=(Na+K)/Al, molar ratio) and Fe-number [FeOT/(FeOT+MgO)], low CaO and MgO contents, enrichment of high field strength elements (i.e. Nb, Zr, Ga, Y, Hf) and light REEs, evidently negative Eu anomalies and high Ga/Al ratios, which are consistent with anorogenic A-type granitoids. Being part of the South Qinling-South Dabieshan Paleozoic alkaline rock belt, the Huangyangshan A-type granitoid pluton results from the Paleozoic extension-initial rifting in the northern margin of the Yangtze Craton related to the opening of the eastern Paleo-Tethyan Ocean. | MA Changqian SHE Zhenbing XU Pin WANG Lingyan | 2005 | Science China Earth Sciences2005，48，8： | 7 |
| 11 | U-Pb Geochronology of Detrital and Inherited Zircons in the Yidun Arc Belt, Eastern Tibet Plateau and Its Tectonic Implications显示文摘This paper reports geochronological data of detrital zircons from the country rock and sedimentary xenoliths of the Cilincuo pluton(79±0.7 Ma) in the southern Yidun arc belt and the inherited zircons from the Late Triassic granites in the eastern Yidun arc belt, eastern Tibet Plateau. Detrital zircons ages from the sedimentary xenoliths have four prominent peaks at 2.5–2.4 Ga, 1.9–1.8 Ga, 480–400 Ma, and 350–300 Ma, whereas those from the country rock exhibit another four prominent peaks at 1.9–1.8 Ga, 850–700 Ma, 480–400 Ma, and 300–250 Ma. Based on comparison with age data from previous studies, we suggest that the sedimentary xenoliths are from the Lanashan Formation and the major provenance of them is Qiangtang Block, Zhongza massif and South China Block, whereas the country rock belongs to the Lamaya Formation and the major provenance of them is similar to those of the neighbouring Songpan-Garzê terrane. In addition, the inherited zircons from the Late Triassic granites in the eastern Yidun arc belts have a prominent Neoproterozoic age population(900–700 Ma), which suggests that there is an old basement with west Yangtze Craton affinity beneath the Triassic sediments. Combining with previous studies, we propose that the provenances of the formations vary from the Lanashan Formation to the Lamaya Formation which may indicate a record of the final closure of the Garzê-Litang Ocean. | Tao Wu Long Xiao Changqian Ma | 2016 | Journal of Earth Science2016，27，3： | 6 |
| 12 | Petrogenesis and Tectonic Implications of Peralkaline A-Type Granites and Syenites from the Suizhou-Zaoyang Region,Central China显示文摘In this study, we present systematic petrological, geochemical, LA-ICP-MS zircon U-Pb ages and Nd isotopic data for the A-type granites and syenites from Suizhou-Zaoyang region. The results show that the peralkaline A-type granites and syenites were episodically emplaced in Suizhou-Zaoyang region between 450±3 and 441±7 Ma which corresponds to Late Ordovician and Early Silurian periods, respectively. Petrologically, the syenite-peralkaline granite association comprises of nepheline normative-syenite and alkaline granite in Guanzishan and quartz normative syenite and alkaline granite in Huangyangshan. The syenite-granite associations are ferroan to alkali in composition. They depict characteristics of typical OIB(oceanic island basalts) derived A-type granites in multi-elements primitive normalized diagram and Yb/Ta vs. Y/Nb as well as Ce/Nb vs. Y/Nb binary plots. Significant depletion in Ba, Sr, P, Ti and Eu indicates fractionation of feldspars, biotite, amphiboles and Ti-rich augite. The values of ?Nd(t) in Guanzishan nepheline syenite and alkaline granite are +1.81 and +2.26, respectively and the calculated two-stage model age for these rocks are 1 040 and 1 003 Ma, respectively. On the other hand, the Huangyangshan alkaline granite has ?Nd(t) values ranging from +2.61 to +3.46 and a relatively younger two-stage Nd model age values ranging from 906 to 975 Ma, respectively. Based on these data, we inferred that the Guanzishan nepheline syenites and granites were formed from fractional crystallization of OIB-like basic magmas derived from upwelling of metasomatized lithospheric mantle. The Huangyangshan quartz syenite and granite on the other hand, were formed from similar magmas through fractional crystallization with low input from the ancient crustal rocks. Typically, the rocks exhibit A1-type granite affinity and classified as within plate granites associated with the Ordovician crustal extension and the Silurian rifting. | Hafizullah Abba Ahmed Changqian Ma Lianxun Wang Ladislav A.Palinkas Musa Bala Girei Yuxiang Zhu Mukhtar Habib | 2018 | Journal of Earth Science2018，29，5： | 5 |
| 13 | The Southward Extension of Cathaysia Block: Evidence from Zircon UPb Dates of Borehole Volcanics in the Northern South China Sea显示文摘Five Paleogene volcanics sampled from the northern South China Sea were analyzed via LA-ICP-MS zircon U-Pb dating,including basalt and andesite from Borehole SCSV1 and volcanic agglomerate from Borehole SCSV2,respectively.A total of 162 zircon U-Pb dates for them cover an age range from Neoarchean to Eocene,in which the pre-Paleocene data dominate.The Paleogene dates of 62.5±2.2 Ma and 42.1±2.9 Ma are associated with two igneous episodes prior to opening of South China Sea basin.Those pre-Paleocene zircons are inherited zircons mostly with magmatogenic oscillatory zones,and have REE features of crustal zircon.Zircon U-Pb dates of 2518–2481 Ma,1933– 1724 Ma,and 1094–1040 Ma from the SCSV1 volcanics,and 2810–2718 Ma,2458–2421 Ma,and 1850 –993.4 Ma from the SCSV2 volcanics reveal part of Precambrian evolution of the northern South China Sea,well comparable with age records dated from the Cathaysia block.The data of 927.0±6.9 Ma and 781±38 Ma dated from the SCSV2 coincide with amalgamation between Yangtze and Cathaysia blocks and breakup of the Rodinia,respectively.The age records of Caledonian orogeny from the Cathaysia block are widely found from our volcanic samples with concordant mean ages of 432.0±5.8 Ma from the SCSV1 and of 437±15 Ma from the SCSV2.The part of the northern South China Sea resembling the Cathaysia underwent Indosinian and Yanshannian tectonothermal events.Their age signatures from the SCSV1 cover 266.5±3.5 Ma,241.1±6.0 Ma,184.0±4.2 Ma,160.9±4.2 Ma and 102.8±2.6 Ma,and from the SCSV2 are 244±15 Ma,158.1±3.5 Ma,141±13 Ma and 96.3±2.1 Ma.Our pre-Paleogene U-Pb age spectra of zircons from the borehole volcanics indicate that the northern South China Sea underwent an evolution from formation of Precambrian basement,Caledonian orogeny,and Indosinian orogeny to Yanshannian magmatism.This process can be well comparable with the tectonic evolution of South China,largely supporting the areas of the northern South China Sea as part of southward extension of the Cathaysia. | XU Changhai QUE Xiaoming SHI Hesheng ZHOU Zuyi MA Changqian | 2013 | Acta Geologica Sinica(English Edition)2013，87，5： | 5 |
| 14 | The Early Paleozoic Tiefosi syn-collisional granite in the northern Dabie Orogen:Geochronological and geochemical constraints显示文摘The Tiefosi granitic pluton is located 5 km northwest of Xinyang City,northern Dabie Orogen,and was emplaced in the Proterozoic Qinling Group. SHRIMP zircon U-Pb dating suggests its crystallization at 436 ± 11 Ma. It is composed of monzogranite and syenogranite containing some amounts of muscovite and few mafic minerals. The rocks are characterized by high and restricted SiO2 content,low FeO,Fe2O3 and MgO contents,high K2O/Na2O ratio,and display high-K calc-alkaline and peraluminous (ACNK>1.1) characteristics. They are generally enriched in large ion lithophile elements (LILE) and depleted in high field strength elements (HFSE). They can be divided into three groups in light of rare earth elements (REE) and trace elements. Group I is moderate in ΣREE and characterized by the absence of Eu anom-aly,high (La/Yb)N ratio,and moderate Rb/Sr and Rb/Ba ratios. Group Ⅱ has moderately negative Eu anomaly,low (La/Yb)N ratio and high ΣREE contents,Rb/Sr and Rb/Ba ratios. Group Ⅲ displays positive Eu anomaly,moderate (La/Yb)N ratio,and low ΣREE,Rb/Sr and Rb/Ba ratios. The calculated εNd(440Ma) values of the rocks vary from 8.8 to 9.9 and Nd depleted mantle model ages are about 2.0 Ga,which resemble those of the paragneisses from the Qinling Group. The results indicate that the Tiefosi granite is crust-derived,syn-collisional S-type granite. Generation of Group I was related to low degree melting of the Qinling Group,while Group Ⅱ was formed by fractionational crystallization of plagioclase from Group I magmas,and Group Ⅲ resulted possibly from magma mingling with plagioclase cumulates. The Tiefosi granite was formed within crustal level related to the collision between the North China and South China blocks in the Early Paleozoic time. | ZHANG JinYang MA ChangQian SHE ZhenBing ZHANG XiangGuo ZHOU HongSheng | 2007 | Science China Earth Sciences2007，50，6： | 2 |
| 15 | The Magma-dynamic Mechaism of Emplacement and Compositional Zonation of the Zhoukoudian Stock, Beijing显示文摘The Zhoukoudian stock in Beijing is a concentric zoned complex intrusive body formed by two successive intrusions. Quartz-diorite formed by the first intrusion is scattered sparsely on the margins of the body, while granodiorite resulting from the second intrusion constitutes the main part of the intrusion. It exhibits three distinct petrographic zones macroscopically, and is chemically characterized by enrichment of high-temperature components, such as Mg, Ca, Sc, Ti, Cr, Mn. Fe and Co, on its border and merely slight enrichment of some low-temperature components, such as Na and Si, in its central part. A series of structural features indicate that the deformation of the intrusion and thermo-metamorphic rocks becomes weaker with an increase of distance from the contact, and that the intrusive body is a product of ballooning or inflating diapiric emplacement. Based on calculations of the density, viscosity and yield strength of magma and the reasonable diffusion constants and oxygen isotopic data, the mechanism of the compositional zonation of the major part of the stock is discussed. It is considered that the Soret effect, combined with double-diffusive convection, can explain the compositional zonation of the intrusion. Calculation of the ascent rates of magma shows that successive upwelling of magma got faster and faster with the progress of time. | Ma Changqian China University of Geosciences, Wuhan, Hubei | 1989 | Acta Geologica Sinica(English Edition)1989，63，2： | 2 |
| 16 | An Early Cretaceous garnet-bearing metaluminous A-type granite intrusion in the East Qinling Orogen,central China:Petrological,mineralogical and geochemical constraints显示文摘Erlangmiao 花岗石侵入位于东方 Qinling Orogen 的东方部分。花岗石与附件石榴石,白云母,黑云母,锆石,和 Fe-Ti 氧化物包含几乎 99 种 vol.% felsic 矿物质。石榴石是主导的附件矿物质,显示出 zoned 质地,并且富于 w (FeO )(14.13%16.09%) 和 w (MnO )(24.21%27.44%) 。岩石有高 SiO2,碱, FeOt/MgO, TiO2/MgO 和低 Al2O3,有 w (Na2O ) 的 CaO /w (K2O )> 1。他们的 Rb, Ga, Ta, Nb, Y,和 Yb 内容高, Sr, Ba, Eu, Zr, P,和 Ti 满足是低的。这些特征显示 Erlangmiao 花岗石是高度发展的 metaluminous A 类型。在损坏黑云母的情况下使结晶从的石榴石 MnO 富有演变融化在黑云母,斜长石, K 长石,锆石,磷灰石,和钛铁矿的分别以后。相对高的起始的 87Sr/86Sr 比率( 0.7060.708 ),低、否定的 Nd ( 120 妈)价值( 6.6~9.0 ),和旧 Nd 模型年龄( 1.51.7 Ga )建议岩石被从地下室的 Paleoproterozoic 花岗石的片麻岩的部分融化可能形成,与在一个 extensional 背景的弄空的披风的参予。 | Jinyang Zhang Changqian Ma Zhenbing She | 2012 | Geoscience Frontiers2012，3，5： | 2 |
| 17 | Regulation of mATG9 trafficking by Src- and ULK1mediated phosphorylation in basal and starvation-induced autophagy显示文摘Autophagy 要求多样的膜来源并且包含 mATG9 的膜 trafficking,在 ATG 家庭的唯一的膜蛋白质。然而,为 autophagy 开始的 mATG9 trafficking 的分子的规定仍然保持不清楚。这里,我们识别了在 mATG9 的 cytosolic N 终点以内排序信号的二保存经典适配器蛋白质,它调停从经由和 AP1/2 建筑群的相互作用的血浆膜和 trans-Golgi 网络(TGN ) 的 mATG9 的 trafficking。在 Tyr8 到的 Src phosphorylates mATG9 处于不着重的条件维持它的 endocytic 和组成的 trafficking。响应饥饿,在由 Src 的 Tyr8 并且在由 ULK1 的 Ser14 的 mATG9 的 phosphorylation 机能上地合作支持在 mATG9 和 AP1/2 建筑群之间的相互作用,为 autophagy 从血浆膜和 juxta 原子的区域导致 mATG9 的再分配到外部水池开始。我们的调查结果揭开 mATG9 trafficking 的新奇机制并且建议基础、导致压力的 autophagy 的协作。 | Changqian Zhou Kaili Ma Ruize Gao Chenglong Mu Linbo Chen Qiangqiang Liu Qian Luo Du Feng Yushan Zhu Quan Chen | 2017 | Cell Research2017，27，2： | 2 |
| 18 | Microstructure and magnetic fabric in the Shuanghe pluton:A synkinematic granite in Eastern Dabie Mountains,China显示文摘Strain analyses for the Shuanghe pluton show that the main strain planes suffered distinct deformation. The main strain value (XZ) is up to 1.59—2.18, and the value of Flinn index (K) ranges from 0.11 to 0.82. Anisotropy of magnetic susceptibility (AMS) measurements reveal that the orientations of the magnetic foliation and lineation gently dip SE, consistent with the macroscopic foliation of the pluton. The value of anisotropy degree (P) ranges from 1.109 to 1.639, and the shape parameter (T) from 0.079 to 0.534. These studies prove that the pluton was deformed under strong compression. Quartz c-axis textures, defined by monoclinic or triclinic asymmetry, usually developed the high maxima paralleling the b-axis, which is defined by the prismatic slip (1010)der the high temperature. These fabrics are quite different from those developed in the high-ultrahigh pressure rocks (UHP) which were captured in the pluton or country rocks. It is concluded that the Shuanghe pluton emplaced under regional compression slightly after the formation of UHP, and it is characterized by synkinematic granitic deformation. | YANG Kunguang LIU Qiang LIU Yuyan MA Changqian XU Yajun YANG Kuifeng | 2004 | Science China Earth Sciences2004，47，10： | 2 |
| 19 | Geochronology,Geochemistry and Sr-Nd-Pb Isotopic Study of the Wulong Flower-Like Glomerophyric Diorite Porphyry(Central China):Implications for Tectonic Evolution of Eastern Qinling显示文摘The Wulong diorite porphyry displays a very unusual flower-like glomerophyric texture and is thus well-known as a gemstone type of 'Luoyang peony stone' for non-geologists. Hereby, we present a comprehensive study in terms of petrography, zircon U-Pb geochronology, geochemistry and Sr-Nd-Pb isotope. The rock exposed as small-scale dykes in the field, intruding in the Archean migmatized biotiteplagioclase genesis at the southern margin of the North China Craton. It exhibits typical porphyrite texture with plagioclase and amphibole as dominant and subdominant phenocrysts, respectively. The diorite porphyry rocks contain 51 wt.%–59 wt.% SiO_2, belonging to medium-K calc-alkaline rock series. They are characterized by enrichment of large ion lithophile elements(LILEs, e.g., Ba) and depletion of high field-strength elements(HFSEs, e.g., Nb, Ta, Zr and Hf), resembling island arc magmatic rocks. They show high initial Sr isotopic ratios(0.710 7–0.715 8), low ε_(Nd)(t) values(-9.9 to-13.3) and variable initial Pb isotopic ratios(^(206)Pb/^(204)Pb vary from 17.3 to 19.3), similar to the coeval intermediate and mafic magmatic rocks of adjacent region. These geochemical features indicate that the Wulong diorite porphyry is likely to originate from an enriched mantle with contamination of crustal materials. Zircon U-Pb dating results reveal a magma crystallization age of 480±3 Ma, consistent with the summit of the magmatic events of the Qinling orogenic belt and reflecting the northernmost Paleozoic magmatic activity of the belt. This may indicate the influence of northward subduction of Paleotethyan oceanic slab can extend a distance of ca. 200 km to the north and reach Luoyang-Songshan region in the East Qinling Orogen. | Yuxiang Zhu Lianxun Wang Changqian Ma Chao Zhang Ke Wang | 2018 | Journal of Earth Science2018，29，5： | 2 |
| 20 | Two Contrasting Ophiolites in One Suture Zone: a Case Study from East Kunlun Orogenic Belt, North Tibetan Plateau显示文摘Ophiolites are fragments of upper mantle and oceanic crust(Dewey and Bird,1971;Coleman,1977;Nicolas,1989)that were consisting of mantle peridotites and a suite of magmatic rocks.Importantly,ophiolite suite is the key sign for the boundary between two terranes,and could be produced in varied settings,such as | ZHANG Hang MA Changqian XIONG Fuhao JIANG Hongan LIU Bin GUO Pan | 2015 | Acta Geologica Sinica(English Edition)2015，89，A02： | 2 |
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