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The giant tin polymetallic mineralization in southwest China:Integrated geochemical and isotopic constraints and implications for Cretaceous tectonomagmatic event

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Geoscience Frontiers 2020年第5期11卷 1593-1608页

作者： Yanbin Liu Lifei Zhang Xuanxue Mo M.Santosh Guochen Dong hongying zhou MOE Key Laboratory of Orogenic Belts and Crustal Evolution School of Earth and Space SciencesPeking UniversityBeijing 100871China State Key Laboratory of Geological Processes and Mineral Resources And School of Earth Science and ResourcesChina University of Geosciences(Beijing)Beijing 100083China Department of Earth Sciences University of AdelaideSA5005Australia Tianjin Institute of Geology and Mineral Resources China Geological SurveyTianjin 300170China

The Gejiu-Bozushan-Laojunshan W-Sn polymetallic metallogenic belt(GBLB)in southeast Yunnan Province is an important part of the southwestern Yangtze Block in South *** polymetallic mineralization in this belt includes the Niusipo,Malage,Songshujiao,Laochang and Kafang ore fields in the Gejiu area which are spatially and temporally associated with the Kafang-Laochang and Songshujiao granite *** granites are characterized by variable A/CNK values(mostly>1.1,except for two samples with 1.09),high contents of SiO2(74.38-76.84 wt.%)and Al2 O3(12.46-14.05 wt.%)and variable CaO/Na2 O ratios(0.2-0.65)as well as high zirconδ18O values(7.74‰-9.86‰),indicative of S-type *** rocks are depleted in Rb,Th,U,Ti,LREE[(La/Yb)N=1.4-20.51],Ba,Nb,Sr,and Ti and display strong negative Eu and Ba *** rocks possess high Rb/Sr and Rb/Ba ratios,relatively low initial 87Sr/86Sr ratios(0.6917-0.7101),and less radiogenicεNd(t)values(-8.0 to-9.1).The zircon grains from these rocks show negativeεHf(t)values in the range of-3.7 to-9.9 with mean TDM2(Nd)and TDM2(Hf)values of 1.57 Ga and 1.55 *** show initial 207Pb/204Pb ranging from15.69 to 15.71 and 206Pb/204Pb from 18.36 to *** from Songshujiao granites exhibits higher U and lower Th/U ratios,lowerδ18O values and higherεHf(t)values than those of the zircon grains in the KafangLaochang *** geochemical and isotopic features indicate that the Laochang-Kafang granites originated by partial melting of Mesoproterozoic crustal components including biotite-rich metapelite and metagraywacke,whereas the Songshujiao granites were derived from Mesoproterozoic muscovite-rich metapelite crustal *** zircon grains from the Songshujiao,Laochang and Kafang granites have high-U concentrations and their SIMS U-Pb ages show age scatter from 81.6 Ma to 88.6 Ma,80.7 Ma to 86.1 Ma and 82.3 Ma to 87.0 Ma,suggesting formation earlier than the monazite and *** SIMS U-Pb ages and Th-Pb ag

关键词： S-type granite SIMS monazite and zircon geochronology Cassiterite U–Pb age Zircon Hf–O isotope Sr–Nd–Pb isotope Yangtze Block

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Advance in Matrix Effect Study of LA-MC-ICPMS U-Pb Dating on U-Bearing Oxide Minerals

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Acta Geologica Sinica(English Edition) 2018年第4期92卷 1680-1681页

作者： CUI Yurong TU Jiarun GENG Jianzhen YE Lijuan zhou hongying LI Huimin Tianjin Center China Geological Survey

Objective With the development of analytic technologies, in-situ dating on U-bearing oxide minerals （e.g., cassiterite, rutile and baddeleyite） has been widely used in geological chronological researches and has attracted remarkable attention to explore evolution of the earth and obtain age information of various geological processes. Matrix effect related studies are especially important during in-situ U- Pb dating based on Laser Ablation Multiple Collector Inductively Coupled Plasma Mass Spectrometry （LA-MC- ICPMS）. However, to our knowledge, only few thorough and systematical matrix effect study of U-bearing oxide minerals has been reported. In this study, we systematically analyzed the matrix effect of U-bearing oxide minerals in order to take place the standards which are difficult to prepare with available standards.

关键词： ICPMS ID Pb Advance in Matrix Effect Study of LA-MC-ICPMS U-Pb Dating on U-Bearing Oxide Minerals MC

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Multi-stage metallogeny in the southwestern part of South China,and paleotectonic and climatic implications:A high precision geochronologic study

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Geoscience Frontiers 2023年第3期14卷 131-147页

作者： Yanbin Liu Lifei Zhang MSantosh Guochen Dong hongying zhou Chaoyang Que Cheng-Xue Yang State Key Laboratory of Geological Processes and Mineral Resources and School of Earth Science and ResourcesChina University of GeosciencesBeijing 100083China MOE Key Laboratory of Orogenic Belts and Crustal Evolution School of Earth and Space SciencesPeking UniversityBeijing 100871China Department of Earth Science University of AdelaideAdelaide SA 5005Australia Tianjin Institute of Geology and Mineral Resources China Geological SurveyTianjin 300170China Zijin Mining Industry Groups Co. Ltd.Xiamen 361009FujianChina

The South China Block(SCB)is among the large-scale W-Sn mineralized regions of the *** Laojunshan W-Sn-dominant ore area(LOA)in the western part of the SCB preserves the records of the tectonic history of the Tethys realm extending through North Vietnam,and Yangtze to Cathaysia blocks,with coeval formation of giant metallic *** prolonged tectonic activities and their control on the genesis and spatio-temporal distribution of giant metallic deposits in the LOA provide a window for a holistic understanding of the tectono-metallogenesis of the *** this study,we present results from a multi-chronologic study to determine the timing of formation of the cassiterite-wolframite-schee lite *** results suggest three distinct tectono-metallogenic periods in the LOA during the geodynamic evolution of the surrounding tectonic *** opening of the Proto-Tethys Ocean between the Yangtze-Indochina blocks and the westward Paleo-Pacific subduction beneath the Cathaysia block(420–380 Ma)jointly contributed to the Silurian to early Devonian intracontinental orogeny in the middle of the SCB that involved top-to-the-north thrusting along NE-striking shear *** event generated the Dulong-Song Chay granitoids,together with the formation of Xinzhai Sn deposit related to sheared mylonitic granites(ca.419 Ma)and pegmatites(ca.389 Ma),which include the early-stage Sn-sulfide skarn(ca.418 Ma)and the late-stage Sn-bearing schist(ca.389 Ma).During the Late Permian to Late Triassic(260–220 Ma),with the closure of the Proto-Tethys oceans in the west and ongoing Paleo-Pacific westward subduction in the east,the SCB and Indochina Block(IB)were amalgamated which also marks the time of formation of the Nanwenhe scheelite skarn *** subducted PaleoTethys oceanic crust was likely entrained by the nearby rising Emeishan mantle plume(270–259 Ma),which formed the Maguan diabase(ca.260 Ma)that shows significantly older Re-Os model age of ca.268 Ma,suggesting

关键词： Sn-W mineralization Geochronology Tectonics setting South China Block Tethys realm

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Final-stage Southward Subduction of the Eastern Paleo-Asian Ocean:Evidence from the Middle Permian Mafic Intrusions in the Northern Margin of the North China Craton

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Acta Geologica Sinica(English Edition) 2022年第1期96卷 81-99页

作者： JING Yan GE Wenchun DONG Yu YANG Hao JI Zheng BI Junhui zhou hongying XING Dehe College of Earth Sciences Jilin UniversityChangchun 130061China Key Laboratory of Mineral Resources Evaluation in Northeast Asia Ministry of Land and Resources of ChinaChangchun 130026China Tianjin Center China Geological SurveyTianjin 300170China Shenyang Center China Geological SurveyShenyang 110034China

The northern margin of the North China Craton(NCC)contains widespread Permian magmatic rocks,but the origin of these rocks remains *** uncertainty hampers us from better understanding of tectonic framework and evolution of the eastern Paleo-Asian Ocean,particularly with respect to its final-stage subduction and closure *** address these questions,this study presents petrological,zircon U-Pb geochronological,whole-rock geochemical and in situ zircon Hf isotopic data for these Permian mafic intrusions in the northern margin of the *** zircon U-Pb dating results indicate that these mafic intrusions were emplaced in the Middle Permian(ca.260 Ma).Geochemically,the studied mafic intrusions have high MgO and transition metals element contents,with high Mg^(#) values,indicating a mantle *** mafic intrusions are characterized by enrichments in large ion lithophile elements(LILEs;e.g.,Rb,Ba,and K)and light rare earth elements(LREEs),and depletions in high field strength elements(HFSEs;e.g.,Nb,Ta,and Ti)and heavy rare earth elements(HREEs),indicating that they were formed in a subduction-related *** geochemical features,together with zircon ε_(Hf)(t)values(-1.1 to+11.2),indicate that their parental magmas were derived from partial melting of heterogeneous mantle wedge metasomatized by subduction-related fluids,with the contributions of slab *** studied mafic intrusions also show wide range of major and trace elements contents,and variable Mg^(#) values,Eu and Sr anomalies,suggesting that their parental magmas had undergone variable degrees of fractional *** with the E-W trending Permian continental arc along the northern margin of the NCC,we confirm that the generation of the Middle Permian mafic intrusions was related to southward subduction of the Paleo-Asian oceanic lithosphere beneath the NCC and the Paleo-Asian Ocean had not closed prior to the Middle Permian.

关键词： Middle Permian mafic intrusions subduction metasomatism northern margin of the North China Craton Paleo-Asian Ocean

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Generation of Nb-enriched mafic rocks and associated adakitic rocks from the southeastern Central Asian Orogenic Belt:Evidence of crust-mantle interaction

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Geoscience Frontiers 2022年第2期13卷 255-274页

作者： Yan Jing Wenchun Ge M.Santosh Yu Dong Hao Yang Zheng Ji Junhui Bi hongying zhou Dehe Xing College of Earth Sciences Jilin UniversityChangchun 130061China Key Laboratory of Mineral Resources Evaluation in Northeast Asia Ministry of Land and Resources of ChinaChangchun 130026China School of Earth Sciences and Resources China University of Geosciences BeijingBeijing 100083China Department of Earth Science University of AdelaideAustralia Tianjin Center China Geological SurveyTianjin 300170China Shenyang Center China Geological SurveyShenyang 110034China

Melting of subducting oceanic lithosphere and associated melt-mantle interactions in convergent plate margins require specific geodynamic environment that allows the oceanic slab to be abnormally *** we focus on the Early Mesozoic mafic rocks and granite porphyry,which provide insights into slab melting processes associated with final closure of the Paleo-Asian *** granite porphyry samples are calc-alkaline and distinguished by high Sr contents,strong depletion of heavy rare earth elements,resulting in high(La/Yb);and Sr/Y ratios,and negligible Eu *** on their high Na_(2)O and Mg O,low K_(2)O contents,positiveε_(Hf)(t)andε_(Nd)(t)and low(^(87)Sr/^(86)Sr)ivalues,we propose that the granite porphyry was likely derived from partial melting of subducting Paleo-Asian oceanic *** Nb-enriched mafic rocks are enriched in Rb,Th,U,Pb and K,and depleted in Nb,Ta,Ba,P and Ti,corroborating a subduction-related *** heterogeneous Sr-Nd-Hf-O isotopic compositions and other geochemical features suggest that they were likely derived from partial melting of peridotitic mantle wedge interacted with oceanic slab-derived adakitic *** element and isotope modeling results and elevated zirconδ^(18)O values suggest variable subducting sediments input into the mantle wedge,dominated by terrigenous *** the widely-developed bimodal rock associations,conjugated dikes,thermal metamorphism,tectonic characteristics,paleomagnetic constraints,and paleogeographical evidence along the Solonke-Changchun suture zone,we identify a slab window triggered by slab break-off,which accounts for slab melting and formation of the Nb-enriched mafic rocks and associated adakitic granite porphyry in southeastern Central Asian Orogenic Belt.

关键词： Early-Middle Triassic Solonker-Changchun suture zone Nb-enriched mafic rocks Adakitic granite porphyry Slab melting

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SHRIMP U-Pb dating for a K-bentonite bed in the Tieling Formation,North China

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Chinese Science Bulletin 2010年第29期55卷 3312-3323页

作者： SU WenBo LI HuaiKun HUFF W D ETTENSOHN F R ZHANG ShiHong zhou hongying WAN YuSheng School of Earth Sciences and Resources China University ofGeosciences (Beijing) Beijing 100083 China Tianjin Institute of Geology and Mineral Resources China Geological Survey Tianjin 300170 China Department of Geology University of Cincinnati Cincinnati OH 45221-0013 USA Department of Earth and Environment Sciences University of Kentucky Lexington KY 40506-0053 USA Beijing SHRIMP Center Institute of Geology Chinese Academy of Geological Sciences Beijing 100037 China

A SHRIMP U-Pb zircon age of 1437±21 Ma was obtained for a recently discovered K-bentonite bed in the Tieling Formation,situated northeast of Beijing at the boundary between Liaoning and Hebei provinces,on the northern margin of the North China Craton(NCC).The SHRIMP U-Pb age places Tieling Formation near the end of the Calymmian Period of the early Mesoproterozoic *** addition,a SHRIMP U-Pb zircon date of 1372±18 Ma was acquired for K-bentonite beds in the overlying,dark-shale-dominated Xiamaling Formation from the same location northeast of *** date assigns a similar Mid-Mesoproterozoic(Ectasian Period) age for the Xiamaling Formation,as have previously determined dates from other sections northwest of *** dates indicate that the Tieling and Xiamaling formations,as well as the related succession in the eastern part of the Yanshan Mountains,represented by the well-known Meso-to Neoproterozoic standard section in Jixian,can be correlated well with sections northwest of Beijing in the western part of the Yanshan *** other words,the boundary between the Calymmian and Ectasian periods in the northern parts of the NCC is marked by the unconformity between the Tieling and Xiamaling formations in the northern *** boundary was previously ascribed to the "Qinyu Orogeny" and thought to be of Grenville *** this regard,the conventional "Qinyu Orogeny" should now be regarded as a short-lived regional uplift during Early Mesoproterozoic time,rather than a result from the Grenvillian assembly of the NCC to the Rodinia Supercontinent(～1.0 Ga).

关键词： SHRIMP 铁岭组膨润土 Pb 锆石中国 Rodinia超大陆中元古代早期

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Palaeoproterozoic Khondalite Belt in the western North China Craton: New evidence from SHRIMP dating and Hf isotope composition of zircons from metamorphic rocks in the Bayan Ul-Helan Mountains area

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Chinese Science Bulletin 2007年第21期52卷 2984-2994页

作者： DONG ChunYan LIU DunYi LI JunJian WAN YuSheng zhou hongying LI ChengDong YANG YueHeng XIE LieWen Institute of Geology Chinese Academy of Geological Sciences Beijing 100037 China Beijing SHRIMP Center Beijing 100037 China Tianjin Institute of Geology and Mineral Resources China Geological Survey Tianjin 300170 China Institute of Geology and Geophysics Chinese Academy of Sciences Beijing 100029 China

Zircom U-Pb age and Hf isotope analyses were made on gneissic granite and garnet-mica two-feldspar gneiss from the Helanshan Group in the Bayan Ul-Helan Mountains area, the western block of the North China Craton (NCC). Zircons from the gneissic granite commonly show core-mantle-rim structures, with magmatic core, metamorphic mantle and rim having ages of 2323±20 Ma, 1923±28 Ma and 1856±12 Ma, respectively. The core, mantle and rim show similar Hf isotope compositions, with single-stage depleted mantle model ages (TDM1) of 2455 to 2655 Ma (19 analyses). Most of the detrital zircons from the garnet-mica two-feldspar paragneiss have a concentrated U-Pb age distribution, with a weighted mean 207Pb/206Pb age of 1978±17 Ma. A few detrital zircons are older (2871 to 2469 Ma). The age for metamorphic overgrown rim was not determined because of strong Pb loss due to their high U content. The zircons show large variation in Hf isotope composition, with TDM1 ages of 1999 to 3047 Ma. In com- bination with previous studies, the main conclusions are as follows: (1) protolith of the khondalite se- ries in the Helanshan Group formed during Palaeoproterozoic rather than the Archaean as previously considered; (2) The results lend support to the contention that there is a huge Palaeoproterozoic Khondalite (metasedimentary) Belt between the Yinshan Mountains Block and the Ordos Block in the Western Block of NCC; (3) The widely-distributed bodies of early Palaeoproterozoic orthogneisses in the Khondalite Belt might be one of the important sources for detritus material in the khondalite series; (4) Collision between the Yinshan Block, the Ordos Block and the Eastern Block occurred in the same tectonothermal event of late Palaeoproterozoic, resulting in the final assembly of the NCC.

关键词：孔兹岩带古元古生代年代测定贺兰山

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Rutile U-Pb age for the ultra-high pressure eclogite from the Dabie Mountains, central China: Evidence for rapid cooling

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Chinese Science Bulletin 2002年第1期47卷 62-65页

作者： LI Qiuli LI Shuguang zhou hongying LI Huimin HONG Ji’an WANG Qingchen H.J.Massonne Department of Earth and Space Science University of Science and Technology of ChinaHefei 230026China Tianjin Institute of Geology and Mineral Resources Institule of Geology and Geophysics Chinese Academy of SciencesBeijing 100029China Institut fur Mineraloie&Kristallechemie Universitat StuttgartAzenbergster.1870174 StuttgartGermany

The U-Pb isotope compositions of rutile, om-phacite and garnet in the eclogite from the Jinheqiao area in the Southern Dabie ultrahigh-pressure metamorphic zonewere analyzed. The consistent high precision U-Pb age (218± 1.2) Ma of rutile in eclogite from the Dabie Mountains was obtained by two ways of isochron and common Pb correction based on the composition of omphacite. This proves that the omphacite in eclogite has a U/Pb ratio (μ = 2.8) low enough to be used for common Pb correction in the analyses of rutile. Under the rapid cooling condition (40℃/Ma) the closure temperature for U-Pb diffusion in rutile is about 470℃. Thus, this U-Pb age of rutile proves that 218 Ma should be the cooling age of eclogite at 470℃ instead of the peak meta-morphic age.

关键词： U-Pb dating of rutile eclogite Dabie Mountains.

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Formation ages and source regions of the Palaeoproterozoic Gaofan, Hutuo and Dongjiao groups in the Wutai and Dongjiao areas of the North China Craton from SHRIMP U-Pb dating of detrital zircons: Resolution of debates over their stratigraphic relationships

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Chinese Science Bulletin 2010年第13期55卷 1278-1284页

作者： WAN YuSheng MIAO PeiSheng LIU DunYi YANG ChongHui WANG Wei WANG HuiChu WANG ZheJiu DONG ChunYan DU LiLin zhou hongying Institute of Geology Chinese Academy of Geological Sciences Beijing 100037 China Beijing SHRIMP Center Beijing 100037 China Tianjin Institute of Geology and Mineral Resources China Geological Survey Tianjin 300170 China Chinese Academy of Geological Sciences Beijing 100037 China

这份报纸在北方中国 Craton 的 Wutai 和 Dongjiao 区域报导 Gaofan， Hutuo 和 Dongjiao 组的元沉积的岩石的由岩屑形成的锆石年龄分布。由岩屑形成的锆石一从 Gaofan 组的 quartzite 主要是在年龄的 2.5 Ga，与大约 2.7 Ga 并且更旧... 详细信息

这份报纸在北方中国 Craton 的 Wutai 和 Dongjiao 区域报导 Gaofan， Hutuo 和 Dongjiao 组的元沉积的岩石的由岩屑形成的锆石年龄分布。由岩屑形成的锆石一从 Gaofan 组的 quartzite 主要是在年龄的 2.5 Ga，与大约 2.7 Ga 并且更旧。A 石英岩从 Hutuo 组的基础集团企业的卵石在到 Gaofan 组的 quartzite 的由岩屑形成的锆石年龄分发是类似的。为从 Dongjiao 组的 meta-feldspar-quartz 沙岩，由岩屑形成的锆石的年龄主要在 2.5 Ga 被集中。比 2.6 Ga 旧的锆石都没被识别，但是在年龄与一些是 1.84 Ga 和 2.22.0 Ga。与更早的研究结合了，下列结论能被得出：(1 ) Gaofan 组是在年龄的早 Palaeoproterozoic 并且对迟了的 Neoarchaean Wutai 花岗石绿岩岩层年轻得多、无关，它 unconformably 躺它。因此， Gaofan 组是在诺思中国 Craton 的最旧的 Palaeoproterozoic 元沉积的单位之一。(2 ) Hutuo 组在一个大陆人地下室上在中间的 Palaeoproterozoic (2.14-2.09 Ga ) 被扔，在早 Palaeoproterozoic Gaofan 组后面。(3 ) Dongjiao 组在 1.84 Ga 以后被形成，并且可能属于 Changcheng 系统的更低的部分。(4 ) 从所有三个组的由岩屑形成的锆石显示出 2.5 Ga 的一座明显的年龄山峰，从在北方中国 Craton 在太古代的结束在强烈 tectono-magma-thermal 事件形成的火的岩石被采购。

关键词：碎屑锆石古元古代形成年代地层关系滹沱河五台山克拉通源区

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Strongly peraluminous granites of Mesozoic in Eastern Nanling Range, southern China: Petrogenesis and implications for tectonics

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Science China Earth Sciences 2005年第2期48卷 165-174页

作者： SUN Tao, zhou Xinmin, CHEN Peirong, LI Huimin, zhou hongying, WANG Zhicheng & SHEN Weizhou Department of Earth Sciences, Nanjing University, Nanjing 210093, China Tianjin Institute of Geology and Mineral Resources, China Geological Survey, Tianjin 300170, China 1. Department of Earth Sciences Nanjing University 210093 Nanjing China 2. Tianjin Institute of Geology and Mineral Resources China Geological Survey 300170 Tianjin China

The strongly peraluminous granites (SPGs) of Eastern Nanling Range (ENR) are a characteristic of all bearing highly aluminous minerals, such as muscovite±AI-rich biotite± tourmaline±garnet, and lack of cordierite. In respect of petrography, geochemistry, Nd isotope, and single grain zircon U-Pb dating, the representative granite bodies of them are studied. The research shows that these granites were emplaced in two stages, namely 228-225 Ma BP and J2-3 159-156 Ma BP, belonging to Indosinian and early Yanshanian periods, respectively, and they have low εNd(t) values (-10.6--11.1), high A/CNK, Rb/Sr ratios and tDM values (1887-1817 Ma), and REE's tetrad effect (TE1,3=1.13-1.34). In comparison with related geology, petrology and chronology of granites in adjacent regions, it is suggested that Indosinian SPGs of ENR formed in the circumstance of post-collisional extension 20 Ma after the major collision of Indosinian Movement (258-243 Ma BP) in Indo-China Peninsula, and early Yanshanian SPGs formed in the background of back-arc extension setting controlled by paleo-Pacific tectonic domain, and J1, the interval of two stages, is the interim from Tethyan to Pacific tectonic domains in South China. These SPGs have similar geological and geochemical characteristics, because they all crystallized from the magma of partial melting of early Proterozoic metasedimentary rocks when the thickened crust (≤50 km) became thinning, decompression, and transmitting of water.

关键词： Nanling Range, strongly peraluminous granite, petrogenesis of granite, South China.

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