A study on the geochemical characteristics and petrogenesis of Holocene volcanic rocks in the Tengchong volcanic eruption field, Yunnan Province, SW China
文献类型：期刊论文
| 作者 | Li Xin; Liu JiaQi |
| 刊名 | ACTA PETROLOGICA SINICA
 |
| 出版日期 | 2012-05-01 |
| 卷号 | 28期号:5页码:1507-1516 |
| 关键词 | High potassium calc-alkaline volcanic rocks Petrochemistry Holocene Tengchong |
| ISSN号 | 1000-0569 |
| 文献子类 | Article |
| 英文摘要 | Studies of major element, trace element and Sr-Nd-Pb isotopic compositions of the Holocene volcanic rocks in the Tengchong volcanic eruption field, including Heikongshan, Dayingshan and Maanshan volcanic rocks, indicate they are high potassium calc-alkaline series rocks including trachybasalt, basaltic trachyandesite, trachyandensite, and dacite. These rocks are enriched in LILE and LREE, and depleted in Nb-Ta-Ti in mantle-normalized incompatible trace element patterns. They have relatively high Sr-87/Sr-86 (0. 705862 similar to 0. 710614), low Nd-143/Nd-144 (0. 511941 similar to 0. 512526) and relatively high radiogenic Pb isotopes (Pb-208/Pb-204 = 38. 962 similar to 39. 155, Pb-207/Pb-204 = 15. 620 similar to 15. 659 and, Pb-206/Pb-204 = 17. 872 similar to 18. 269). The geochemical characteristics of the Holocene volcanic rocks in the Tengchong volcanic eruptive field indicate that the magma sources of Heikongshan, Dayingshan, Maanshan are from enriched mantle which possibly resulted from palaeo-oceanic crust subduction. The magma sources of these three volcanoes are same but with different evolution stage. The magma evolution of Dayingshan is higher than that of Heikongshan and Maanshan. The comparison with geochemical characteristics of post - collisional K-rich rocks in South Tibet shows that the magma sources of Holocene volcanic rocks in the Tengchong volcanic eruption field and post-collisional K-rich rocks in South Tibet are different. |
| WOS关键词 | MANTLE SOURCE ; MAGMA ; AREA ; ORIGIN ; TIBET |
| WOS研究方向 | Geology |
| 语种 | 英语 |
| WOS记录号 | WOS:000304784400013 |
| 出版者 | SCIENCE PRESS |
| 源URL | [http://ir.iggcas.ac.cn/handle/132A11/84130]  |
| 专题 | 中国科学院地质与地球物理研究所 |
| 通讯作者 | Li Xin |
| 作者单位 | Chinese Acad Sci, Inst Geol & Geophys, Key Lab Cenozo Geol & Environm, Beijing 100029, Peoples R China |
| 推荐引用方式 GB/T 7714 | Li Xin,Liu JiaQi. A study on the geochemical characteristics and petrogenesis of Holocene volcanic rocks in the Tengchong volcanic eruption field, Yunnan Province, SW China[J]. ACTA PETROLOGICA SINICA,2012,28(5):1507-1516. |
| APA | Li Xin,&Liu JiaQi.(2012).A study on the geochemical characteristics and petrogenesis of Holocene volcanic rocks in the Tengchong volcanic eruption field, Yunnan Province, SW China.ACTA PETROLOGICA SINICA,28(5),1507-1516. |
| MLA | Li Xin,et al."A study on the geochemical characteristics and petrogenesis of Holocene volcanic rocks in the Tengchong volcanic eruption field, Yunnan Province, SW China".ACTA PETROLOGICA SINICA 28.5(2012):1507-1516. |
入库方式： OAI收割
来源：地质与地球物理研究所
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