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Acta Geologica Sinica(English Edition) 2017年第3期91卷 988-1002页

作者： shi yuruo ZHAO Xitao Beijing SHRIMP Center Institute of GeologyChinese Academy of Geological Sciences Institute of Geology and Geophysics Chinese Academy of Sciences

The Miyun area of Beijing is located in the northern part of the North China Craton （NCC） and includes a variety of Archean granitoids and metamorphic rocks. Magmatic domains in zircon from a tonalite reveal Early Neoarchean （2752±7 Ma） ages show a small range in εHf（t） from 3.1 to 7.4 and tDM1（Hf） from 2742 to 2823 Ma, similar to their U-Pb ages, indicating derivation from a depleted mantle source only a short time prior to crystallization. SHRIMP zircon ages of granite, gneiss, amphibolite and hornblendite in the Miyun area reveal restricted emplacement ages from 2594 to 2496 Ma. They also record metamorphic events at ca. 2.50 Ga, 2.44 Ga and 1.82 Ga, showing a similar evolutionary history to the widely distributed Late Neoarchean rocks in the NCC. Positive eHf（t） values of 1.5 to 5.9, with model ages younger than 3.0 Ga for magmatic zircon domains from these Late Neoarchean intrusive rocks indicate that they are predominantly derived from juvenile crustal sources and suggest that significant crustal growth occurred in the northern NCC during the Neoarchean. Late Paleoproterozoic metamorphism developed widely in the NCC, not only in the Trans-North China Orogen, but also in areas of Eastern and Western Blocks, which suggest that the late Paleoproterozoic was the assembly of different micro-continents, which resulted in the final consolidation to form the NCC, and related to the development of the Paleo-Mesoproterozoic Columbia or Nuna supercontinent.

关键词： SHRIMP zircon dating Neoarchean Miyun North China Craton Hf isotopes

Simulation design of fuze warhead system of air defense missile at very low altitude

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Journal of Systems Engineering and Electronics 2017年第3期28卷 572-584页

作者： Qi Zhao Guangyu Du Bin Zhang Yanbin Zhai yuruo shi Beijing Institute of Electronic System Engineering Beijing 100854China

A novel simulation method for fuze warhead system (FWS) at very low altitude flight is proposed to solve adaptability issues of the traditional one in the naval battle. Firstly, a simulation system framework is presented. Then the detailed implementation of a novel general fuze model, a novel sea echo model and a novel warhead dynamic effectiveness power field algorithm including the simulation system are presented. Finally, simulation results show good performance of the proposed method. The proposed method can simulate the echo signal when the complex fuze antennas detect target and the sea at the same time, and can truly reflect the target positions hit by the warhead fragments. The proposed method can solve the existing problems in the FWS simulation system.

关键词： fuze warhead system (FWS) simulation fuze warhead matching sea echo fragment trajectory drifting

Constraints on sedimentary ages of the Chuanlinggou Formation in the Ming Tombs, Beijing, North China Craton: LA-ICP-MS and SHRIMP U–Pb dating of detrital zircons

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Acta Geochimica 2018年第2期37卷 257-280页

作者： Jing Ding yuruo shi Alfred Kroner J. Lawford Anderson Beijing SHRIMP Center Institute of Geology Chinese Academy of Geological Sciences Beijing 100037 China China University of Geosciences Beijing 100083 China Institut fur Geowissenschaften Universitat Mainz55099 Mainz Germany Department of Earth and Environment Boston University Boston MA 02215 USA

Detrital zircons in five sedimentary samples, MC1 to MC5, from the bottom of the Chuanlinggou Formation in the Ming Tombs District, Beijing, were dated with the LA-ICP-MS and SHRIMP U-Pb methods. Age spectra of the five samples show a major peak at 2500 Ma and a secondary peak at 2000 Ma, suggesting their provenances were mainly from the crystalline basement of the North China Craton and the Trans-North China Orogen. The youngest zircon has an age of 1673 d： 44 Ma, indicating that the Chuanlinggou Formation was deposited after this age. From sample MC4 to MC5, lithology changed from a clastic rock （fine-grained sandstone） to a carbonate rock （fine-grained dolomite）, suggesting that the depositional basin became progressively deeper. The age spectrum of sample MC5 shows a major peak at 2500 Ma and a secondary peak at 2000 Ma. Sample MC4, which is stratigraphically lower than sample MC5, only had one peak at 2500 Ma. We conclude that there was a transgressive event when sediments represented by MC5 was deposited, and seawater carried ca. 2000 Ma clastic materials to the basin where the Chuanlinggou Formation was deposited, leading to the addition of ca. 2000 Ma detritus. Our research indicates that the source area for the sediments became more extensive with time. We conclude that the Chuanlinggou Formation in the Ming Tombs District was deposited in a low-energy mud fiat sedimentary environment in the inter-supra tidal zone because it is mainly composed of silty mudstone and fine-grained sandstone with relatively simple sedimentary structures.

关键词： Detrital zircon LA-ICP-MS U-Pb ages SHRIMP Chuanlinggou Formation Ancient sedimentary environment North China Craton

Age and Origin of Paleogene Granitoids from Western Yunnan Province,China:Geochemistry,SHRIMP Zircon Ages,and Hf-in-Zircon Isotopic Compositions

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Acta Geologica Sinica(English Edition) 2015年第5期89卷 1601-1615页

作者： shi yuruo WU Zhonghai Alfred KRoNER FAN Taoyuan YANG Zhenyu Beijing SHRIMP Center Institute of GeologyChinese Academy of Geological Sciences Institute of Geomechanics Chinese Academy of Geological Sciences Institut für Geowissenschaften Universitat Mainz

We report geochemical data, SHRIMP zircon ages and Hf-in-zircon isotopic compositions for Cenozoic granitoids from major fault systems in the Tethyan belt in western Yunnan Province, southwestern *** magmatic pulses occurred in the Paleogene, namely at ca.57 Ma, ca.50 Ma, 45–40 Ma, and 38–34 *** magmatism of this episode（57–50 Ma） produced S-type granites whose zircons yielded εHf（t） values of-5.0 *** contrast, late magmatism of this episode reflects heterogeneous *** from a granite porphyry along the Ailaoshan-Red River fault system have slightly positive εHf（t） values suggesting derivation from relatively young crust and/or a juvenile ***, zircons from a granite along the Gaoligong fault system have strongly negative εHf（t） values and suggest derivation from a Paleoproterozoic crustal *** composition of the granitoids varies with age（from ca.57 Ma to ca.34 Ma） from peraluminous to metaluminous and also suggests a change from syn-collisional to late-orogenic tectonic setting.A new tectonic model, impacting lithospheric wedge（ILW） is shown for the origin of Paleogene granitoids in this paper.

关键词： Paleogene magmatism SHRIMP zircon ages Hf-in-zircon isotopic compositions western Yunnan

In-Situ SHRIMP U-Pb Dating of Xenotime Outgrowth on Detrital Zircon Grains from the Changzhougou Formation of the Ming Tomb District, Beijing

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Acta Geologica Sinica(English Edition) 2015年第1期89卷 304-305页

作者： shi yuruo Kennedy ALLEN Aleinikoff JOHN SONG Tianrui LI Linlin SUN Huiyi Beijing SHRIMP Center Institute of Geology Chinese Academy of Geological Sciences Department of Applied Physics Curtin University U.S. Geological Survey

SHRIMP U-Pb dating of diagenetic xenotime from sedimentary rocks has provided age constraints for sedimentary diagenesis （McNaughton et al., 1999; Fletcher et al., 2000; England et al., 2001; Rasmussen et al., 2004; Vallini et al., 2007）. Xenotime （YPO4） may grow during early diagenesis, typically being present as a trace constituent in siliciclastic sedimentary rocks （Rasmussen, 2005）, in the form of syntaxial outgrowths on detrital zircon grains. Diagenetic xenotime occurs in a wide variety of rock types, including conglomerate,

关键词： SHRIMP Pb Beijing

Geochronologic and petrochemical evidence for the genetic link between the Maomaogou nepheline syenites and the Emeishan large igneous province

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Chinese Science Bulletin 2007年第7期52卷 949-958页

作者： LUO ZhenYu XU YiGang HE Bin shi yuruo HUANG XiaoLong Key Laboratory of Isotope Geochronology and Geochemistry Guangzhou Institute of Geochemistry Chinese Academy of Sciences Guangzhou 510640 China Graduate University of the Chinese Academy of Sciences Beijing 100049 China Beijing SHRIMP Center Beijing 100037 China

The Maomaogou nepheline syenite is located at the inner zone of the Emeishan large igneous province and exhibits intrusive contact with the Emeishan basalts. SHRIMP U-Pb dating on zircons from this syenite yields an age of 261.6±4.4 Ma, in agreement with the age of the Panzhihua layered intrusion and the eruption age of the Emeishan basalts as constrained by stratigraphic data. Geochemical data fur-ther suggest that the Maomaogou syenite has a source analogue to the Emeishan basalt, and may have been formed by partial melting of gabbroic cumulates underplated in the lower crust. As s result, tem-poral and spatial relationships and petrogenetic constraints provide evidence for the genetic link be-tween basalts, mafic/ultramafic and intermediate/acidic intrusives in the Panxi area.

关键词：会理县猫猫沟霞石正长岩峨眉山岩石成因相关性地质年代地球化学

Zircon SHRIMP U-Pb dating for gabbro at Chaotiehe in the Haicheng area, eastern Liaoning

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Chinese Science Bulletin 2010年第4期55卷 403-410页

作者： MIAO LaiCheng ZHANG FuQin LIU DunYi shi yuruo XIE HangQiang Institute of Geology and Geophysics Chinese Academy of Sciences Beijing 100029 China Beijing SHRIMP Centre Institute of Geology Chinese Academy of Geological Sciences Beijing 100037 China

Chaotiehe gabbroic intrusion in the eastern part of Liaoning Province was dated by the zircon SHRIMP U-Pb technique. The results gave an emplacement age of 126±4 Ma, indicating that the intrusion thus formed during the lithospheric thinning of the North China Craton (NCC) in the Early Cretaceous rather than in a rifting setting during the Paleoproterozoic as previously thought. The gabbroic intrusion contains abundant old zircons with Paleoproterozoic (2.10-2.46 Ga and ca. 1.87 Ga) and Neoproterozoic (747-969 Ma) ages. The Paleoproterozoic zircons were probably derived from NCC itself, whereas the Neoproterozoic ones were likely from materials of the Yangtze Craton that had previously been subducted beneath NCC. These geochronological dates are of important implications for understanding the Mesozoic crustal evolution of NCC.

关键词：锆石SHRIMP 辉长岩海城地区辽宁东部 Pb 古元古代同位素年代学侵位年龄

SHRIMP zircon U-Pb dating of the Gangou granitoids,Central Tianshan Mountains,Northwest China and tectonic significances

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Chinese Science Bulletin 2007年第11期52卷 1507-1516页

作者： shi yuruo LIU DunYi ZHANG Qi JIAN Ping ZHANG FuQin MIAO LaiCheng Beijing SHRIMP Center Institute of Geology Chinese Academy of Geological Sciences Beijing 100037 China Institute of Geology and Geophysics Chinese Academy of Sciences Beijing 100029 China

Two types of granitoids,highly deformed augen granitoids and undeformed fine-grained granitoids,are widely distributed in Gangou area,Central Tianshan Mountains,Northwest China. The augen granitoids are high-K calc-alkaline characterized by high K2O,Rb,Y and Th,and low Sr and Sr/Y. They also have high contents of large ion lithophile elements (LILE),such as Ba,Rb,K and Th,and relatively low con-tents of high field strength elements (HFSE),such as Zr,Y and Nb. The fine-grained granitoids are calc-alkaline characterized by high Sr,low Y and HREE,similar to adakitic rocks,and with Na2O/K2Oshigou-Gangou Ocean and the evolution of the Central Tianshan orogenic belt.

关键词：测定年龄小虾地域天山

Carboniferous Alaskan-type complex along the Sino–Mongolian boundary,southern margin of the Central Asian Orogenic Belt

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Acta Geochimica 2017年第2期36卷 276-290页

作者： yuruo shi Linlin Li Alfred Kroner Jing Ding Wei Zhang Zengbao Huang Ping Jian Beijing SHRIMP Center Institute of Geology Chinese Academy of Geological Sciences Beijing 100037 China Institut für Geowissenschaften Universitat Mainz 55099 Mainz Germany Geological Survey of Gansu Province Lanzhou 735000 China

We present zircon ages and geochemical data for the Hongshishan Carboniferous Alaskan-type mafic–ultramafic complex exposed in the Beishan area along the Sino–Mongolian boundary, southern margin of the Central Asian Orogenic Belt. This complex mainly consists of dunite,harzburgite, lherzolite, wehrlite, and gabbro, which intrudes Early Carboniferous volcanic rocks and reveals a zoned structure. Zircons of a gabbro sample yielded a 206Pb/238 U age of 357 ± 4 Ma, reflecting the time of Early Carboniferous magmatism. Zircon ages were also obtained for an andesite(322 ± 3 Ma) and a basaltic andesite(304 ± 2 Ma).High initial Nd isotope whole-rock values suggest that the Hongshishan gabbro [e_(Nd(t))= +9.6-+10.2] and basalt[eNd(t)= +10.0-+10.8] were derived from a depleted mantle source. Slightly lower eNd(t)values for the ultramafic rocks [eNd(t)= +8.5-+8.7] suggest some interaction of the parental magma with the continental crust. In contrast, the Late Carboniferous Quershan samples in this area represent subduction-related arc volcanic rocks with Adakite-like compositions. The early Carboniferous Hongshishan Alaskan-type complex was interpreted to represent the remnants of a magma chamber that crystallized at the base of a mature island arc, whereas the Quershan island arc volcanic rockssuggest the resurrection of the subduction process after arccontinent collision and uplift of the roots of the arc.

关键词： Alaskan-type complex Carboniferous Zircon age Sino-Mongolian boundary CAOB

SHRIMP Zircon U-Pb Dating of Gabbro and Granite from the Huashan Ophiolite,Qinling Orogenic Belt,China: Neoproterozoic Suture on the Northern Margin of the Yangtze Craton

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Acta Geologica Sinica(English Edition) 2007年第2期81卷 239-243页

作者： shi yuruo LIU Dunyi ZHANG Zongqing MIAO Laicheng ZHANG Fuqin XUE Hongmei Beijing SHRIMP Center Institute of Geology Chinese Academy of Geological Sciences Beijing 100037 Institute of Geology and Geophysics Chinese Academy of Sciences Beijing 100029 No. 4 Geological Team Xinjiang Bureau of Geology and Mineral Resources Altay Xinjiang 836500

The recently identified Huashan ophiolitic mélange was considered as the eastern part of the Mianlüe suture in the Qinling orogenic belt. SHRIMP zircon U-Pb geochronology on gabbro from the Huashan ophiolite and granite intruding basic volcanic rocks indicates crystallization ages of 947±14 Ma and 876±17 Ma respectively. These ages do not support a recently proposed Hercynian Huashan Ocean, but rather favor that a Neoproterozoic suture assemblage （ophiolite） is incorporated into the younger （Phanerozoic） Qinling orogenic belt.

关键词： SHRIMP Neoproterozoic Ophiolite Huashan Mianlüe Suture Qinling