Geochemical characteristics of the yao'an and machangqing alkaline-rich intrusions.
文献类型：期刊论文
| 作者 | Bi, XW; Hu, RZ; Peng, JT; Wu, KX; Su, WC; Zhang, XZ |
| 刊名 | Acta petrologica sinica
 |
| 出版日期 | 2005 |
| 卷号 | 21期号:1页码:113-124 |
| 关键词 | Alkaline-rich intrusions Geochemical characteristics Genesis of the intrusions |
| ISSN号 | 1000-0569 |
| 通讯作者 | Bi, xw(xwbi@163.com) |
| 英文摘要 | The yao'an and machangqing alkaline-rich intrusions, lying in east margin of the nw-wnw ailaoshan-jinshajiang fault zone, form parts of the ailaoshan-jinshajiang alkaline-rich intrusive belt. the yao'an intrusion consists mainly of syenite porphyry, and the machangqing intrusion consists mainly of granite porphyry. chemically these two intrusions are characterized by enrichment in alkaline and potassium. they enrich in lree and lile (such as rb, sr, ba, th, la etc.), depict hfse (such as nb, ta and ti etc.), have high rb/sr, la/nb, ba/nb and lree/hree ratios, and don't show obvious eu anomalies. the i-sr values of these two intrusions are relatively high, and epsilon(nd) values are relatively low. it is suggested that the intrusions were derived from partial melting of an enriched upper mantle (emii), a mixture between normal mantle and subducted oceanic crust, in a continental arc of extension tectonic setting. although these two intrusions share similar characteristics on tectonic setting in the himalayan period, age and source region, they have some difference on lithology and chemical composition, which was probably related to the difference on physical-chemical condition (such as t, p and fo(2) etc.) during magmatic crystallization, and on different melted degress of source rocks. an mineralization is considered to be associated with the intrusions of alkaline series while cu mineralization with the intrusions of alkaline-subalkaline series in ailaoshan- jinshajiang alkaline intrusive belt. |
| WOS关键词 | YUNNAN PROVINCE ; CHINA ; DEPOSIT ; BELT ; MINERALIZATION ; HELIUM ; ROCKS ; ZONE ; GOLD ; WEST |
| WOS研究方向 | Geology |
| WOS类目 | Geology |
| 语种 | 英语 |
| WOS记录号 | WOS:000227476000011 |
| 出版者 | SCIENCE CHINA PRESS |
| URI标识 | http://www.irgrid.ac.cn/handle/1471x/2377533 |
| 专题 | 中国科学院大学 |
| 通讯作者 | Bi, XW |
| 作者单位 | Chinese Acad Sci, Grad Sch, Beijing 100039, Peoples R China |
| 推荐引用方式 GB/T 7714 | Bi, XW,Hu, RZ,Peng, JT,et al. Geochemical characteristics of the yao'an and machangqing alkaline-rich intrusions.[J]. Acta petrologica sinica,2005,21(1):113-124. |
| APA | Bi, XW,Hu, RZ,Peng, JT,Wu, KX,Su, WC,&Zhang, XZ.(2005).Geochemical characteristics of the yao'an and machangqing alkaline-rich intrusions..Acta petrologica sinica,21(1),113-124. |
| MLA | Bi, XW,et al."Geochemical characteristics of the yao'an and machangqing alkaline-rich intrusions.".Acta petrologica sinica 21.1(2005):113-124. |
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来源：中国科学院大学
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