ISOCHRON

作品数：26被引量：224H指数：8
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Sm-Nd ISOTOPIC AGE OF LAMPRO PHYRES IN THE GEZHEN GOLD BEARING SHEAR ZONE ON HAINAN ISLAND AND ITS GEOLOGICAL IMPLICATIONS
《Geotectonica et Metallogenia》2002年第1期76-81,共6页XU De ru1,2, LIANG Xin quan1, CHEN Guang hao1 and HUANG Zhi long2(1. Changsha Institute of Geotectonics, Chinese Academy of Sciences, Changsha 410013, China 2. Institute of Geochemistry, Chinese Academy of Sciences, Guiyang 550002, China) 
Sm Nd isotopic compositions of eight lamprophyre samples, which come from the Gezhen gold bearing shear zone on western Hainan Island, are measured. The Sm Nd isochron age is 495.98±13.14 Ma, (143Nd/144Nd)0=0.512094,...
关键词：LAMPROPHYRE SM-ND ISOCHRON age Gezhen gold-bearing SHEAR zone western HAINAN ISLAND 
On emplacement ages of lam-proites in Zhenyuan County,Guizhou Province,China被引量：7
《Chinese Science Bulletin》2002年第10期874-880,共7页Weixuan Fang Ruizhong Hu Wenchao Su Jiafei Xiao Liang Qi Guohao Jiang 
This work was jointly supported by the National Outstanding Young Scientist Foundation of China (Grant No. 49925309); the State Key Project of Fundamental Research Planning (Grants No. 1999043200); and 95-Y-25.
Emplacement ages of lamproites that comprise lamproite and olivine lamproite in Zhenyuan County, Guizhou Province, China, have been constrained by the whole-rock Sm-Nd and Rb-Sr isochron methods and the whole rock K-A...
关键词：the SM-ND ISOCHRON age the RB-SR ISOCHRON age whole rock K-AR method LAMPROITE Zhenyuan COUNTY of Guizhou Prov-ince China. 
Sm-Nd isotope study and dating on Honguleleng ophiolite in Xinjiang, China被引量：2
《Chinese Science Bulletin》1999年第20期1914-1917,共4页Zhangdong Jin Jianhua Huang Fuchun Li 
A study of the Sm-Nd isotope composition of Honguleleng ophiolite in Xinjiang, China, isochron age ((626±25)Ma),εNd(t) = 8.40,and its model age (TNdDM) in the range of 1 180-1 208 Ma, indicates that the ophiolite wa...
关键词：OPHIOLITE SM-ND ISOCHRON age Honguleleng Xinjiang. 
Sm-Nd isochron age of ophiolite along northern margin of Altun Tagh Mountain and its tectonic significance被引量：14
《Chinese Science Bulletin》1999年第5期456-458,共3页Zhaojie Guo Zhicheng Zhang Jianjun Wang 
An ophiolite belt is exposed to the northern edge of Altun Tagh Mountain. Geochronological researches were made on gabbro and basalt. Sm-Nd isochron age of gabbro is (829 ± 60) Ma, while the age of gabbro mixed basal...
关键词：Alton Tagh MOUNTAIN OPHIOLITE SM-ND ISOCHRON age. 
The evidence of Sm-Nd isochron age for the early Paleozoic ophiolite in Mangya area,Altun Mountains被引量：39
《Chinese Science Bulletin》1998年第9期754-756,共3页Liang Liu Zicheng Che Yan Wang Jinhai Luo Jianqi Wang Zhangjian Gao 
The REE patterns of the basic volcanic rocks in Mangya area, Altun, are slight rich in LREE with (La/Ya)-N=1.69-3.20, (La/Sm)-N=1.37-1.87, other trace element ratios of the rocks are Th/Ta≈1 (for a few samples greate...
关键词：Altun MOUNTAINS Mangya OPHIOLITE SM-ND ISOCHRON age. 
A　Sm－Nd　mineral　isochron　of　mafic　granulite　from　the　Sφstrene　Island，　East　Antarctica被引量：1
《Chinese Journal of Polar Science》1996年第2期94-98,共5页任留东 刘小汉 
Redetedrination of the metamorphic age of the gsrnet-bearing mafic wholeulite from the Sstrene Island, Esat Antarctica has been made and an isochron of wholerock-garnet-pyroxene-plagioclase is obtained, giving an age...
关键词：Sφstrene Island metamorphic age East Antarctica granulite. 
Discovery of the Early Proterozoic Basement in the Middle-Lower Reaches of Yangtze River and Its Significance被引量：7
《Chinese Science Bulletin》1994年第2期135-139,共5页邢凤鸣 徐祥 李志昌 
The middle-lower reaches of the Yangtze River are a famous copper-ironmetallogenic belt, but many vital basic geologic problems about lithogenesis andmineralization are hard to be solved, since the metamorphic basemen...
关键词：Dongling Group SM-ND ISOCHRON age the early Proterozoic. 
DISCOVERY OF 3.3 Ga ARCHAEAN ROCKS IN NORTH TARiM BLOCK OF XINJIANG, WESTERN CHINA被引量：22
《Chinese Science Bulletin》1992年第18期1546-1549,共4页胡霭琴 G. ROGERS 
Geologists have been paying much attention to the characteristics and age of the basement of the Tarim Block. Recently, some isotopic ages for the Precambrian rocks in the margin areas of the Tarim Block have been obt...
关键词：ARCHAEAN 3.3 GA SM-ND ISOCHRON age Tarim. 
RESETTING OF Sm-Nd ISOTOPIC SYSTEM AMONG MINERALS——DISCOVERY FROM DATING OF CHENCAI GROUP
《Chinese Science Bulletin》1992年第9期764-767,共4页凌洪飞 章邦桐 沈渭洲 刘继顺 杨杰东 陶仙聪 
Project supported by the National Natural Science Foundation of China.
The original rock formation age and metamorphic history of Chencai Group are one of the keys to understanding tectonics and early crustal evolution of Zhejiang and Fujian provinces. For the purpose of obtaining the or...
关键词：whole-rock RB-SR ISOCHRON mineral SM-ND ISOCHRON SM-ND ISOTOPIC system RESETTING AMPHIBOLITE facies metamorphism 
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