Characteristics and geological significance of olivine xenocrysts in Cenozoic volcanic rocks from western Qinling
文献类型：期刊论文
| 作者 | Su Benxun; Zhang Hongfu; Xiao Yan; Zhao Ximmao |
| 刊名 | PROGRESS IN NATURAL SCIENCE
 |
| 出版日期 | 2006-12-01 |
| 卷号 | 16期号:12页码:1300-1306 |
| 关键词 | Western Qinling Dangchang Haoti Cenozoic volcanic rocks olivine xenocrysts zoned texture |
| ISSN号 | 1002-0071 |
| 文献子类 | Article |
| 英文摘要 | Cenozoic volcanic rocks from the Haoti, Dangchang County of the western Qinling Mountains, contain a few clearlyzoned olivines. These olivines are relatively big in grain sizes and usually have cracks or broken features. Their cores have similar compositions (Mg-# 90.4-91.0) to those for the peridotitic xenoliths entrained in host volcanic rocks and their rims are close to the compositions of olivine phenocrysts (Mg-# = 85.5-81.9). The CaO contents in these zoned olivines are lower than 0.1%. These features demonstrate that the clearly-zoned olivines are xenocrysts and disaggregated from mantle peridotites. The zoned texture was the result of the interaction between the olivine and host magma. Available data show that the volcanic rocks would have been derived from the mantle source metasomatized by subducted hydrathermally-altered oceanic crust. The formation of these Cenozoic volcanic rocks was perhaps related to the rapid uplift of the Tibetan Plateau. |
| WOS关键词 | LITHOSPHERIC MANTLE ; GANSU PROVINCE ; NORTH CHINA ; BASALTS ; KAMAFUGITE ; CRATON |
| WOS研究方向 | Materials Science ; Science & Technology - Other Topics |
| 语种 | 英语 |
| WOS记录号 | WOS:000244273500011 |
| 出版者 | TAYLOR & FRANCIS LTD |
| 源URL | [http://ir.iggcas.ac.cn/handle/132A11/66638]  |
| 专题 | 中国科学院地质与地球物理研究所 |
| 通讯作者 | Su Benxun |
| 作者单位 | 1.Chinese Acad Sci, Inst Geol & Geophys, State Key Lab Lithospher Evolut, Beijing 100029, Peoples R China 2.Chinese Acad Sci, Grad Sch, Beijing 100039, Peoples R China |
| 推荐引用方式 GB/T 7714 | Su Benxun,Zhang Hongfu,Xiao Yan,et al. Characteristics and geological significance of olivine xenocrysts in Cenozoic volcanic rocks from western Qinling[J]. PROGRESS IN NATURAL SCIENCE,2006,16(12):1300-1306. |
| APA | Su Benxun,Zhang Hongfu,Xiao Yan,&Zhao Ximmao.(2006).Characteristics and geological significance of olivine xenocrysts in Cenozoic volcanic rocks from western Qinling.PROGRESS IN NATURAL SCIENCE,16(12),1300-1306. |
| MLA | Su Benxun,et al."Characteristics and geological significance of olivine xenocrysts in Cenozoic volcanic rocks from western Qinling".PROGRESS IN NATURAL SCIENCE 16.12(2006):1300-1306. |
入库方式： OAI收割
来源：地质与地球物理研究所
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