全部文献期刊学位论文会议报纸专利标准年鉴图书|学者科研项目
中外文文献  中文文献  外文文献
作者:Xiachen Zhi
来源:[J].Chinese Science Bulletin(IF 1.319), 2000, Vol.45 (3), pp.193-200Springer
摘要:Abstract(#br)The determination of the formation age of subcontinental Lithosphere Mantle (SCLM) is a widely concerned issue in mantle geochemistry. It is difficult to obtain the formation age of SCLM using lithophile isotopic systems such as Rb-Sr, Sm-Nd, U-Th-Pb, etc., but as si...
作者:LaiMin Zhu , ZhenJu Ding , ShuZhen Yao ...
来源:[J].Chinese Science Bulletin(IF 1.319), 2009, Vol.54 (13), pp.2309-2324Springer
摘要:... Molybdenite Re-Os isotopic dating gave Os model ages of 212.7±2.6 Ma to 215.1±2.6 Ma with a weighted mean of 214.1±1.1 Ma, and an Re-Os isochron age of 214.4±7.1 Ma. These ages are close to K-Ar ages (223 to 226 Ma) and a SHRIMP zircon U-Pb age (223±7 Ma) for the Wenqu...
作者:XuDong Ma , JingHui Guo , Liang Chen ...
来源:[J].Chinese Science Bulletin(IF 1.319), 2010, Vol.55 (27-28), pp.3197-3204Springer
摘要:... Re-Os isotopic compositions of 9 samples were analyzed to date the komatiites. The Os contents are from 0.88 to 2.63 ppb, identical with typical komatiites, and slightly lower than the normal mantle. The 187 Os/ 188 Os ratios are from 0.1115 to 0.1197, which are lower enoug...
作者:Li Wenjun , Gao Bingyu , Zhang Lianchang ...
来源:[J].Journal of Geochemical Exploration(IF 1.952), 2018Elsevier
摘要:... New Re-Os data for chalcopyrite from the Xiaotongchang Cu deposit show tens of ppb Re abundances (1–86 ppb) and contain essentially no common Os. All the samples have extremely high 187 Re/ 188 Os (up to 2.3 × 10 4 ), and the dominance of radiogenic Os and high 187 Re/...
作者:Mohammad Boomeri , Rahele Moradi , Holly Stein ...
来源:[J].Ore Geology Reviews(IF 2.417), 2018Elsevier
摘要:... Re-Os dating of two molybdenite samples from two different drill holes yields dates of 29.72 ± 0.11 and 31.95 ± 0.11, suggesting that the system was active for at least 2.0 m.y.
作者:David Selby , Robert A. Creaser
来源:[J].Geochimica et Cosmochimica Acta(IF 3.884), 2004, Vol.68 (19), pp.3897-3908Elsevier
摘要:Abstract(#br)We present a detailed study of Re-Os age determinations for eight natural molybdenite samples of like polytype (2H), spanning a range of age, natural grain size and deposit type. The focus of the study is to critically evaluate the effects of sampling, sample prepa...
作者:聂凤军 , 李香资 , 李超 ...
来源:[J].地质论评, 2013, (01), pp.175-181CNKI
摘要:...为了进一步查明曹四夭矿床的形成时间,对主要钼矿体4件辉钼矿样品进行了Re-Os同位素分析,所获同位素年龄值分别为131.9±2.3Ma、131.2±2.3Ma、129.7±2.0Ma和128.6±2.4Ma,平均值为130.4±2.4Ma,与花岗斑岩体锆石U-Pb年龄(134~...
被引频次:5下载频次:202
作者:杨泽强
来源:[J].矿床地质, 2007, (03), pp.289-295CNKI
摘要:为查明商城县汤家坪大型钼矿床形成的时代,建立钼多金属矿成矿模式,利用电感耦合等离子体质谱仪对汤家坪等3个钼矿床的7件辉钼矿样品进行了Re-Os同位素年龄测定,获得汤家坪钼矿床辉钼矿Re-Os等时线年龄为(113...
被引频次:83下载频次:452
作者:张达 , 吴淦国 , 刘乃忠 ...
来源:[J].地质学报, 2010, (10), pp.1428-1437CNKI
摘要:...已有同位素年代学研究成果表明该区存在早侏罗世、中侏罗世以及早白垩世成矿作用,但缺少与晚侏罗世大规模岩浆作用相关的成矿年代学记录。本文选取漳平北坑场钼多金属矿床开展辉钼矿的Re-Os同位素年...
被引频次:14下载频次:198
作者:陈宣华 , 屈文俊 , 韩淑琴 ...
来源:[J].地质学报, 2010, (09), pp.1333-1348CNKI
摘要:...本文对巴尔喀什成矿带巴尔喀什—阿克沙套地区11件辉钼矿样品进行了Re-Os同位素分析,得到博尔雷大型斑岩型铜(钼)矿床和东科翁腊德、扎涅特、阿克沙套石英脉-云英岩型钨钼矿床的辉钼矿模式年龄(平均值)...
被引频次:12下载频次:322

我们正在为您处理中,这可能需要一些时间,请稍等。

资源合作:cnki.scholar@cnki.net, +86-10-82896619   意见反馈:scholar@cnki.net

×