| 山西铝土矿Rb-Sr同位素定年 |
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| 引用本文：王银喜,李惠民,顾连兴,吴昌志,柴东浩,陈平,王随生,张京俊.2003.山西铝土矿Rb-Sr同位素定年[J].地球学报,24(6):589-592. |
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| 基金项目:国土资源部“山西铝土矿矿床成因与矿床模式研究”(原地质矿产部治科定:9405)项目，地质矿产部“九五”科技攻关项目(95011020401)，国家自然科学基金(46973197)，南京大学成矿作用国家重点实验室基金，南京大学分析测试基金 |
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| 中文摘要:采用Rb Sr全岩与粘土矿物等时线年龄方法测得山西五台剖面 (RS0 1) ,临县剖面 (RS0 2 )和孝义剖面 (RS0 3)的 3个含矿粘土岩的Rb Sr同位素年龄分别为 :316 .9± 1.2Ma ,87Sr/86Sr为 0 .710 5 4± 14 ;315 .5± 1.3Ma ,87Sr/86Sr为 0 .710 86±18;317.3± 1.1Ma ,87Sr/86Sr为 0 .710 5 0± 14。它们代表了铝土矿和含矿系列成矿的同位素年龄 ,相当于晚石炭世早期 |
| 中文关键词:山西铝土矿 Rb-Sr铝土粘土岩同位素年龄 晚石炭世早期 |
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| Rb-Sr Isotope Dating of Bauxite Deposits in Shanxi Province |
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| Abstract:The authors determined Rb-Sr isotope ages and initial 87Sr/ 86Sr ratios of three bauxite whole rock and clay mineral samples from Wutai(RS01), Linxian(RS02) and Xiaoyi (RS03)in Shanxi Province. They are 316.9±1.2 Ma and 0.71054±14, 315.5±1.3 Ma and 0.71086±18, and 317.3±1.1 Ma and 0.71050±14, respectively. These ages indicate that the bauxite and the ore-hosting sedimentary sequence in Shanxi Province were deposited in the time interval between 315 Ma and 317 Ma, corresponding to the Late Carboniferous Epoch. |
| keywords:bauxite deposit Rb-Sr isotope dating Late Carboniferous Shanxi |
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