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- ZIRCON U Pb AGE OF META BASIC LAVA FROM THE KUANPING ROCK GROUP,SHAANXI PROVICE 陕西宽坪岩群变基性熔岩锆石U-Pb年龄
- It intruded in Upper Ordovician Shifeng Formation and is dated as 333 86Ma of U Pb concordant age of zircon, which belongs to middle stage of Variscan. 岩体侵入上奥陶统石缝组(O3s) , 岩体的锆石U?Pb 一致线年龄333-86 Ma, 属华力西中期。
- An in situ zircon Hf isotopic, U-Pb age and trace element study of banded granulite xenoliths from Hannuoba basalt: Tracking the early evolution of the lower crust in the North China Craton. 汉诺坝玄武岩中条带状麻粒岩捕虏体锆石原位Hf同位素、U-Pb 定年和微量元素研究。
- Growth and reworking of the Yangtze continental nucleus: evidence from zircon U-Pb ages and Hf isotopes 扬子陆核的生长和再造:锆石U-Pb年龄和Hf同位素研究
- Minerals or altered minerals such as sericite, biotite and K feldspar in the altered wallrocks are selected to be objects of age determination, and the Ar Ar, K Ar, Rb Sr, U Pb isochron dating methods are adopted. 选用矿石或蚀变围岩中的绢云母、黑云母、钾长石等蚀变矿物作为测年对象 ,采用 Ar- Ar、 K- Ar法或 Rb- Sr等时线法测年在目前的技术条件下是经济可行的 ,关键是要保证被测矿物确为蚀变矿物并且纯度较高。 用 U- Pb法测定矿脉中的水热锆石来确定成矿年龄 ,但如何区分继承锆石和水热锆石尚不成熟。
- Zircon Hf isotopes 锆石Hf同位素
- zircon U - Pb age 锆石U-Pb年龄
- zircon U - Pb geochronology 锆石U-Pb年代学
- single zircon U - Pb ages 颗粒锆石U-Pb年龄
- Zircon Hf isotope compositions of Middle Jurassic-Early Cretaceous intrusions in Shandong Province and its implications 山东中侏罗世-早白垩世侵入岩的锆石Hf同位素组成及其意义
- Zircon U-Pb ages, Hf isotopic compositions and geological significance: a case study of Mesozoic batholiths and mafic enclaves in North Taihang 太行山北段中生代岩基及其包体锆石U-Pb年代学和Hf同位素性质及其地质意义
- Zircon ages and Hf isotopic composition of gneisses from the Rongcheng ultrahigh-pressure terrain in the Sulu orogenic belt 苏鲁造山带荣成超高压地体片麻岩锆石年龄和铪同位素组成特征
- The U,Ba,Zn,Zr,Hf,Pb elements has been considered the indicator elements in the forming of uranium ore,and the gray gritstone is analogical indicator elements and REE characteristics with the gray rock in the forming of uranium ore. U,Ba,Zn,Zr,Hf,Pb等为铀矿的成矿指示元素; 灰色粗砂岩与含矿岩石具有相同的成矿指示元素组合和稀土元素特征;
- The U-Pb Dating Ages and Hf Isotopic Compositions of Zircon from Various Granulitic Xenoliths: The Formation and Reworking of the Lower Crust Beneath the North China 捕虏体麻粒岩锆石U-Pb年龄和铪同位素:华北地块下地壳的形成与再造
- Isotopes that emit radioactive particles; a stove emitting heat. 发射出放射性粒子的同位素; 发出热量的炉子
- Li Huimin, Li Huaikun, Lu Songnian.Ore forming age of the Dongping gold ore: The U - Pb zircon dating of the hydrothermal zircon in the ore vein[J].Journal of Earth, 1997, 18(Sup. ) : 176 - 178. [6]李惠民;李怀坤;陆松年.;用矿脉中热液锆石的U-Pb定年确定东坪金矿的成矿时代[J]地球学报;1997;18(增刊):176-178
- Hf isotopes Hf同位素
- Timing of magmatism of the gneissic-granite plutons along north Qaidam margin and implications for Precambrian crustal accretions: zircon U-Pb dating and Hf isotope evidences 柴北缘花岗片麻岩的岩浆作用计时和前寒武纪地壳增长的锆石U-Pb年龄和Hf同位素证据
- U-Pb and Hf isotopes U-Pb和Hf同位素
- The expedition suffered all the rigo(u)rs of a Canadian winter. 这支探险队饱受了加拿大严冬的折磨。