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SIMS U-Pb dating of rutile within eclogitic xenoliths in the Early Cretaceous adakitic rocks of the Xuzhou-Huaibei area, China: Constraints on the timing of crustal thickening of the eastern North China Craton被引量：4: 2015年; This paper reports the results of secondary ion mass spectrometry （SIMS） U-Pb dating of rutile within eclogitic xenoliths from the Early Cretaceous adakitic rocks in the Xuzhou-Huaibei area of China and discusses the geological significance of these new dates. The dating of rutile from pargasite-bearing eclogite and garnet clinopyroxenite （retrograde eclogite） yielded ages of 209 ± 25 and 132 ± 7 Ma, respectively. The former is consistent with the timing of the first stage of exhumation of the Dabie-Sulu orogenic belt and provides evidence of crustal thickening within the southeastern margin of the North China Cra- ton during the early Mesozoic, related to subduction and collision between the Yangtze and North China cratons. The latter age is similar to the timing of emplacement of the hosting intrusion and indicates that the rutile U-Pb system was triggered after uplifting by the intrusion of the hosting magmas. It implies that garnet clinopyroxenite was previously at the depth where the temperature was above the futile U-Pb closure temperature.; XIONG BoQinXU WenLiangLI QiuLiYANG DeBinZHOU QunJun; 关键词：RUTILE

Composition and distinction of white nephrite from Asian deposits: <正>The major and minor element compositions and textures of white nephrite samples from 6 different deposits i...; Xiaoxiao LingEsther SchmdickeRuihua WuShiqi WangJürgen Gose; 关键词：TREMOLITE; 文献传递

Diagenetic xenotime age constraints on the Sanjiaotang Formation,Luoyu Group,southern margin of the North China Craton:Implications for regional stratigraphic correlation and early evolution of eukaryotes: Eukaryote fossil-bearing Ruyang and Luoyu groups are extensively exposed along the southern margin of the Nort...; Zhongwu LanXianhua LiZhong-Qiang ChenQiuli LiAxel HofmannYanbin ZhangYan ZhongYu LiuGuoqiang TangXiaoxiao LingJiao Li; 文献传递

Monazite and xenotime U-Th-Pb geochronology by ion microprobe:dating highly fractionated granites at Xihuashan tungsten mine,SE China: <正>Zircon,monazite,and xenotime have proven to be valuable chronometers for various geological processes due t...; Q.L.LiX.H.LiZ.W.LanC.L.GuoY.N.YangY.LiuG.Q.Tang; 关键词：MONAZITE XENOTIME; 文献传递

榴辉岩中金红石U-Pb定年:对大陆碰撞造山带形成和演化的制约: 金红石是高压-超高压变质岩石中标志性变质矿物之一,通常被认为是峰期变质矿物组合.其主要成分除TiO_2外,因含有众多其他微量元素(如:Nb,Ta,Zr,Hf,Cr,V,W和U等)而成为主要研究对象.通过对相应元素变化特征...; 李秋立杨亚楠石永红林伟; 关键词：金红石榴辉岩离子探针超高压变质作用; 文献传递

徐淮地区早白垩世adakitic岩石中榴辉岩类捕虏体中金红石的SIMSU-Pb定年:对华北克拉通东部陆壳加厚时间的制约被引量：8: 2015年; 报道了徐淮地区早白垩世adakitic岩石中榴辉岩和石榴辉石岩(退变榴辉岩)捕虏体中金红石的SIMS U-Pb定年结果,并讨论了其地质意义.含有韭闪石的榴辉岩中金红石的定年结果为(209±25)Ma,而石榴辉石岩中金红石的定年结果为(132±7)Ma.前者与大别-苏鲁超高压变质带的第一次折返时间相近,揭示中生代早期华北克拉通东南缘陆壳加厚事件的存在和这一加厚事件与扬子-华北克拉通之间的俯冲碰撞有关,后者与寄主岩浆的侵位时间相当,反映寄主岩浆捕获石榴辉石岩后金红石U-Pb体系才开始计时,而之前处于高于封闭温度的地壳深度.; 熊伯琴许文良李秋立杨德彬周群君; 关键词：金红石 SIMS U-PB定年

Diagenetic xenotime dating to constrain the initial depositional time of the Yan-Liao Rift: In the Mesoproterozoic and Neoproterozoic,the North China Craton(NCC)underwent long-lived sedimentation with m...; Yan-Bin ZhangQiu-Li LiZhong-Wu LanFu-Yuan WuXian-Hua LiJin-Hui YangMing-Guo Zhai; 关键词：MONAZITE; 文献传递

Towards higher precision SIMS U-Pb zircon geochronology via dynamic multi-collector analysis: The U-Pb dating system has been widely used in geochronology because the system contains two independent paren...; Yu LiuQiu-Li LiGuo-Qiang TangXian-Hu LiQing-Zhu Yin; 文献传递

离子探针第四纪锆石U-Pb和U-Th定年方法及应用被引量：4: 2016年; 第四纪年代学是第四纪地质研究的重要组成部分。高精度、高效率第四纪U—Th-Pb定年技术已在气候一环境演化、全球变化、火山-岩浆作用、生物迁徙-灭绝等研究中得到广泛应用并取得重大成果。本文以离子探针（SIMS）第四纪锆石U—Th—Ph定年方法为主，对其定年的原理和方法、分析技术与误差校正以及国内外研究进展进行介绍。相较于其他定年方法，SIMS微区原位定年可以提供样品内部的微观年龄信息。对于〉350ka的锆石，可以用常规SIMSU—Pb方法定年，经过适当的普通Pb和^230Th校正，得到准确的年龄；对于〈350ka的锆石，不平衡U系（^238U-^230Th）定年精度高于^238U-^206pb定年，可以根据样品Th—U含量情况选择微区原位定年方法或者通过对样品。^230Th进行富集后再进行测定。在过去10余年里，SIMS第四纪锆石U-Th—Pb定年技术取得了长足进步，在矿物结晶机制、岩浆过程以及火山活动中显示出巨大的应用前景。我国已有3个实验室装备了大型高分辨率高灵敏度SIMS，迅速建立SIMS第四纪锆石U—Th定年方法并推广应用，对提高我国高分辨率第四纪年代学以及第四纪地质研究有重要的意义。; 高钰涯李秋立刘宇唐国强凌潇潇李献华

Age determination of nephrite by in-situ SIMS U-Pb dating syngenetic titanite:A case study of the nephrite deposit from Luanchuan,Henan,China: Nephrite is a kind of valuable jade which forms during metamorphism under greenschist facies conditions.Most i...; Xiao-Xiao LingEsther SchmadickeQiu-Li LiJurgen GoseRui-Hua WuShi-Qi WangYu LiuGuo-Qiang TangXian-Hua Li; 关键词：NEPHRITE GEOCHRONOLOGY TITANITE TREMOLITE; 文献传递

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国家自然科学基金(41222023)