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黑龙江三道湾子金矿床锆石U-Pb年龄及其地质意义陈静1,孙丰月1(1.吉林省长春市吉林大学地球科学学院)摘 要:通过LA-ICP-MS锆石原位定年方法,对黑龙江三道湾子金矿床附近的二长花岗岩(三道湾子岩体)和闪长玢岩脉进行了年龄测定.结果显示,原定晚三叠世的二长花岗岩锆石U-Pb年龄为(188.7±1.7)Ma,与区内同期侵入岩及一系列斑岩型,矽卡岩-热液型铜钼铁铅锌矿床共同记录了本区早侏罗世一次重要的成岩成矿事件,该期岩浆热液活动可能与太平洋板块俯冲引起的地壳加厚有关.闪长玢岩脉锆石U-Pb年龄为(112.2......
Significance of zircon trace element geochemistry,the Shihu gold deposit,western Hebei Province,North China曹烨1,2,3,李胜荣1,2,张华锋1,2,刘小滨2,李真真2,敖翀2,要梅娟1,2,31. State key Laboratory of Geological Processes... that the sources of ore-forming materials were from Precambrian host rocks.Our results significantly enhanced the usefulness of zircon in crustal studies of the North China craton and as an indicator mineral......
Significance of zircon trace element geochemistry,the Shihu gold deposit,western Hebei Province,North China曹烨1,2,3,李胜荣1,2,张华锋1,2,刘小滨2,李真真2,敖翀2,要梅娟1,2,31. State key Laboratory of Geological Processes... that the sources of ore-forming materials were from Precambrian host rocks.Our results significantly enhanced the usefulness of zircon in crustal studies of the North China craton and as an indicator mineral......
of zircons of intrusions in Beroen deposit 图5 Beroen岩体的锆石U-Pb年龄谐和及加权平均图 Fig. 5 Zircon U-Pb concordian and weighted mean ages of host intrusions of Beroen 表2 Beroen岩体英云闪长岩和花岗闪长岩体中主元素含量..., BEATE B. Geodynamic controls on Tertiary arc magmatism in Ecuador: Constraints from U–Pb zircon geochronology of Oligocene–Miocene intrusions and regional age distribution trends[J]. Tectonophysics......
Trans. Nonferrous Met. Soc. China 23(2013) 2638-2643 Fabrication of β-Sialon/ZrN/ZrON composites using fly ash and zircon Bei-yue MA, Ming-gang SUN, Yu-shi DING, Chen YAN, Ying LI School of Materials... carbothermal reduction-nitridation process with fly ash, zircon and active carbon as raw materials. The effects of raw materials composition and holding time on synthesis process were investigated......
Preparation of ZrB2-SiC Powders via Carbothermal Reduction of Zircon and Prediction of Product Composition by Back-Propagation Artificial Neural Network刘江昊1,DU Shuang2,LI Faliang1,张海军1,张少伟31. The State Key Laboratory of Refractories and Metallurgy, Wuhan University of Science and Technology2. Refractory Co., Ltd,Wuhan Iron and Steel (Group) Corp.3. College of Engineering, Mathematics and Physical......
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=2.49~3.18 Ga,平均值为2.80 Ga. 表2 北淮阳地区火山岩锆石Hf同位素分析结果 Table 2 Lu-Hf zircon isotopic data of BHY-5 from the North Huaiyang 图3 北淮阳地区火山岩锆石年龄协和图 Fig. 3 Zircon age of volcanic rocks in North Huaiyang area 3... Bohua, LI Li, NI Pei, et al. Formation age and characteristics of magma sources of volcanics related to gold mineralization in the North Huaiyang zone, Anhui: constraints from zircon U-Pb dating and Hf......
presents a systematic study of LA-ICP-MS zircon U–Pb age, major and trace elements, Sr-Nd-Hf isotopes, and the first detailed Li isotope analysis of the Dahongliutan pluton. LA-ICP-MS zircon U–Pb dating...-derived magma results in partial melting of the lower crust. Key words: LA-ICP-MS zircon U–Pb age; petrogeochemistry; Li-Sr-Nd-Hf isotopic composition; Dahongliutan pluton; West Kunlun orogen, China......
; major and minor components; zircon sand; sample prepa-ration by fusion; [全文内容正在添加中] ......
