Fluorite Sm-Nd isochron and pitchblende U-Pb dating in the Baiyanghe Be-U deposit, Xinjiang and their geological significances
文献类型：期刊论文
| 作者 | Yi LongSheng1,2; Fan HongRui1; Zhai MingGuo1; Li YueXiang2; Ma HanFeng2; Tian JianJi2; Xiu XiaoQian2 |
| 刊名 | ACTA PETROLOGICA SINICA
 |
| 出版日期 | 2016-07-01 |
| 卷号 | 32期号:7页码:2099-2110 |
| 关键词 | Sm-nd Isotopic Chronology Fluorite U-pb Isotopic Dating Pitchblende Bertrandite Baiyanghe Deposit Xinjiang |
| 文献子类 | Article |
| 英文摘要 | Baiyanghe deposit, located in the northwestern Xinjiang, is a super-large Be-U deposit. The beryllium ore mineral was defined as bertrandite and the uranium minerals were identified to be pitchblende and uranophane, with minor uranniobite. Fluorites are dominantly closely associated with Be and U mineralization. In order to restore the ore-forming evolution processes and separate the ore-forming stages, this paper systematically sampled various fluorites from bore holes for Sm-Nb isotopic chronology. Three groups of isochronal ages have been obtained, 291 +/- 16Ma, 265 +/- 33Ma and 207 +/- 37Ma which respectively represent the pre-ore, ore-forming and post-ore fluorites. The U-Pb isotopic dating of pitchblende has obtained apparent ages of Pb-206/U-28 as 237.8 +/- 3.3Ma, 224 +/- 3.1Ma, 197.8 +/- 2.8Ma, 97.8 +/- 1.4Ma and 30.0 +/- 0.4Ma, and the uranium ore-forming process could be separated into 4 stages: Middle Triassic, Late Triassic to Early Jurassic, Late Cretaceous and Middle Paleogene. Therefore, in the Baiyanghe deposit, the beryllium mineralization was earlier than the uranium mineralization, and pitchblende has formed for four times at least. |
| WOS关键词 | WESTERN TRANSBAIKAL REGION ; NORTHERN XINJIANG ; BERYLLIUM DEPOSITS ; TECTONIC EVOLUTION ; GRANITE PORPHYRY ; TOPAZ RHYOLITES ; VOLCANIC-ROCKS ; JUNGGAR BASIN ; PETROGENESIS ; CHINA |
| WOS研究方向 | Geology |
| 语种 | 英语 |
| WOS记录号 | WOS:000381327100012 |
| 源URL | [http://ir.iggcas.ac.cn/handle/132A11/53332]  |
| 专题 | 地质与地球物理研究所_中国科学院矿产资源研究重点实验室 |
| 作者单位 | 1.Chinese Acad Sci, Inst Geol & Geophys, Key Lab Mineral Resources, Beijing 100029, Peoples R China 2.Beijing Res Inst Uranium Geol, Beijing 100029, Peoples R China |
| 推荐引用方式 GB/T 7714 | Yi LongSheng,Fan HongRui,Zhai MingGuo,et al. Fluorite Sm-Nd isochron and pitchblende U-Pb dating in the Baiyanghe Be-U deposit, Xinjiang and their geological significances[J]. ACTA PETROLOGICA SINICA,2016,32(7):2099-2110. |
| APA | Yi LongSheng.,Fan HongRui.,Zhai MingGuo.,Li YueXiang.,Ma HanFeng.,...&Xiu XiaoQian.(2016).Fluorite Sm-Nd isochron and pitchblende U-Pb dating in the Baiyanghe Be-U deposit, Xinjiang and their geological significances.ACTA PETROLOGICA SINICA,32(7),2099-2110. |
| MLA | Yi LongSheng,et al."Fluorite Sm-Nd isochron and pitchblende U-Pb dating in the Baiyanghe Be-U deposit, Xinjiang and their geological significances".ACTA PETROLOGICA SINICA 32.7(2016):2099-2110. |
入库方式： OAI收割
来源：地质与地球物理研究所
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