Re-os isotopic geochronology and fluid inclusion study of the lailisigao'er porphyry cu-mo deposit in western tianshan, xinjiang, nw china
文献类型：期刊论文
| 作者 | Zhu MingTian1,2; Wu Guang3,4; Xie HongJing1,2; Wan Yu5; Zhong Wei1; Mei Mei1; Liu Jun1,2 |
| 刊名 | Acta petrologica sinica
 |
| 出版日期 | 2010-12-01 |
| 卷号 | 26期号:12页码:3667-3682 |
| 关键词 | Molybdenite re-os isotope age Fluid inclusion Porphyry cu-mo deposit Lailisigao'er Western tianshan |
| ISSN号 | 1000-0569 |
| 通讯作者 | Zhu mingtian(zhuzibj@163.com) |
| 英文摘要 | Lailisigao'er cu-mo deposit is located between the late paleozoic yilianhabirga remnant oceanic basin to the north and the early paleozoic bolehelou island arc to the south. the ore bodies are hosted in both granodiorite porphyry and the contact zone between the granodiorite porphyry and its wall rock. re-os isotopic ages for five molybdenite samples range from 367 +/- 2.0ma to 378 +/- 2.9ma, with a weighted mean age of 372.5 +/- 5.0ma and an isochronic age of 379.9 +/- 8.3ma, respectively, indicating that the lailisigao'er cu-mo deposit was formed in the late devonian. fluid inclusions in quartz crystals can be classified into aqueous two-phase (w-type), co2-bearing three-phase (c-type) and daughter mineral-bearing multiphase (s-type) inclusions, as well as minor pure-co2 and ch4 types. the early stage fluid inclusions in quartz phenocrysts from k-feldspathized granodiorite porphyry are mainly aqueous two-phase inclusions that yield homogenization temperatures of 358 degrees c to 395 degrees c and salinities of 7.59% to 11.22% nacl equivalent, respectively. the ore-forming stage quartz-molybdenite veins in both granodiorite porphyry and hornfels contain aqueous two-phase, co2-bearing three-phase, daughter mineral-bearing multiphase, and minor pure co2 fluid inclusions. these fluid inclusions have homogenization temperatures of 230 degrees c to 378 degrees c and salinities of 0.02% to 52.00% nacl equivalent, respectively. fluid inclusions of the late stage quartz-calcite vein are characterized by aqueous two-phase inclusions, with homogenization temperatures of 118 degrees c to 241 degrees c and salinities of 1.57% to 9.54% nacl equivalent. fluid boiling in the main stage is evidenced by the co-existence of three types of fluid inclusions with similar homogenization temperatures. fluid inclusions of main stage were trapped at temperatures of 210 similar to 343 degrees c and pressures of 17 similar to 59mpa, respectively, corresponding to depths of 1.7 similar to 2.2km. immiscibility or boiling of ore-forming fluid is the dominant factor for metallic sulfide deposition. the lailisigao'er deposit was likely formed in a late devonian continental arc which might be related to the southward subduction of the yilianhabirga oceanic basin beneath the yili-central tianshan micro-continent. |
| WOS关键词 | CARBONIFEROUS VOLCANIC-ROCKS ; FREEZING-POINT DEPRESSION ; TECTONIC EVOLUTION ; NORTHWESTERN CHINA ; NORTHERN XINJIANG ; GOLD DEPOSITS ; CALC-ALKALINE ; CENTRAL-ASIA ; MINERALIZATION ; MAGMATISM |
| WOS研究方向 | Geology |
| WOS类目 | Geology |
| 语种 | 英语 |
| WOS记录号 | WOS:000286452000018 |
| 出版者 | SCIENCE PRESS |
| URI标识 | http://www.irgrid.ac.cn/handle/1471x/2409162 |
| 专题 | 中国科学院大学 |
| 通讯作者 | Zhu MingTian |
| 作者单位 | 1.Chinese Acad Sci, Guangzhou Inst Geochem, Key Lab Metallogenic Dynam, Guangzhou 510640, Peoples R China 2.Chinese Acad Sci, Grad Sch, Beijing 100049, Peoples R China 3.Chinese Acad Geol Sci, Inst Mineral Resources, Beijing 100037, Peoples R China 4.Lingbao Jinyuan Min Ltd Liabil Co, Lingbao 472500, Henan Province, Peoples R China 5.Xinjiang Uigur Autonomous Reg Bur Geol & Mineral, Wusu 833000, Peoples R China |
| 推荐引用方式 GB/T 7714 | Zhu MingTian,Wu Guang,Xie HongJing,et al. Re-os isotopic geochronology and fluid inclusion study of the lailisigao'er porphyry cu-mo deposit in western tianshan, xinjiang, nw china[J]. Acta petrologica sinica,2010,26(12):3667-3682. |
| APA | Zhu MingTian.,Wu Guang.,Xie HongJing.,Wan Yu.,Zhong Wei.,...&Liu Jun.(2010).Re-os isotopic geochronology and fluid inclusion study of the lailisigao'er porphyry cu-mo deposit in western tianshan, xinjiang, nw china.Acta petrologica sinica,26(12),3667-3682. |
| MLA | Zhu MingTian,et al."Re-os isotopic geochronology and fluid inclusion study of the lailisigao'er porphyry cu-mo deposit in western tianshan, xinjiang, nw china".Acta petrologica sinica 26.12(2010):3667-3682. |
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来源：中国科学院大学
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