Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1130/B31653.1 |
Petrogenesis of mafic and felsic rocks from the Comei large igneous province, South Tibet: Implications for the initial activity of the Kerguelen plume | |
Zhou, Qing1; Liu, Zheng2,3; Lai, Yang1; Wang, Guo-Chang3; Liao, Zhenwen1; Li, Ying-Xu1; Wu, Jian-Yang1; Wang, Shengwei1; Qing, Cheng-Shi1 | |
2018-05-01 | |
发表期刊 | GEOLOGICAL SOCIETY OF AMERICA BULLETIN |
ISSN | 0016-7606 |
EISSN | 1943-2674 |
出版年 | 2018 |
卷号 | 130页码:811-824 |
文章类型 | Article |
语种 | 英语 |
国家 | Peoples R China |
英文摘要 | The role of the Kerguelen plume in breaking up eastern Gondwana is so far unclear. Recently, the initial magmatic record of the plume has been identified in the Comei igneous province, Tethyan Himalaya. In this contribution, we investigated a group of basaltic intrusions (Juelongpu and Zhaxikang) and felsic lavas (Sangxiu) from the Comei igneous province. Laser ablation-inductively coupled plasma-mass spectrometry zircon U-Pb dating indicates that these mafic and felsic rocks were emplaced in the Early Cretaceous (ca. 140-137 Ma). Probably originating from the Kerguelen plume, the Juelongpu and Zhaxikang mafic rocks are characterized by high incompatible element abundances, high Nb/Y ratios, and oceanic-island basalt- like rare earth element and trace-element patterns. The Sangxiu felsic samples share A-type affinities and were derived by partial melting of crustal rocks. These mafic and felsic rocks represent a magmatic response to the initial activity of the Kerguelen plume. Their ages (ca. 140-137 Ma) are older than the timing of initial breakup of eastern Gondwana (ca. 137-136 Ma), indicating that the plume must have been incubating underneath the supercontinent before the breakup. Recent plate reconstructions coupled with our geochemical and geochronological constraints suggest that the Kerguelen plume head was resident under the Comei area of Greater India at ca. 140 Ma. Our results, in conjunction with previous studies, support the viewpoint that the Kerguelen plume played an active role in breaking up eastern Gondwana. |
领域 | 地球科学 |
收录类别 | SCI-E |
WOS记录号 | WOS:000432588700007 |
WOS关键词 | A-TYPE GRANITOIDS ; TETHYAN HIMALAYA ; FLOOD BASALTS ; MANTLE PLUME ; GEOCHEMICAL CHARACTERISTICS ; WESTERN-AUSTRALIA ; SANGXIU FORMATION ; EASTERN GONDWANA ; SHILLONG PLATEAU ; INTRUSIVE ROCKS |
WOS类目 | Geosciences, Multidisciplinary |
WOS研究方向 | Geology |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://119.78.100.173/C666/handle/2XK7JSWQ/25089 |
专题 | 地球科学 |
作者单位 | 1.Chinese Geol Survey, Chengdu Inst Geol & Mineral Resources, Chengdu 610081, Sichuan, Peoples R China; 2.Lanzhou Univ, Sch Earth Sci, Gansu Key Lab Mineral Resources Western China, Lanzhou 730000, Gansu, Peoples R China; 3.Nanjing Univ, Sch Earth Sci & Engn, State Key Lab Mineral Deposits Res, Nanjing 210046, Jiangsu, Peoples R China |
推荐引用方式 GB/T 7714 | Zhou, Qing,Liu, Zheng,Lai, Yang,et al. Petrogenesis of mafic and felsic rocks from the Comei large igneous province, South Tibet: Implications for the initial activity of the Kerguelen plume[J]. GEOLOGICAL SOCIETY OF AMERICA BULLETIN,2018,130:811-824. |
APA | Zhou, Qing.,Liu, Zheng.,Lai, Yang.,Wang, Guo-Chang.,Liao, Zhenwen.,...&Qing, Cheng-Shi.(2018).Petrogenesis of mafic and felsic rocks from the Comei large igneous province, South Tibet: Implications for the initial activity of the Kerguelen plume.GEOLOGICAL SOCIETY OF AMERICA BULLETIN,130,811-824. |
MLA | Zhou, Qing,et al."Petrogenesis of mafic and felsic rocks from the Comei large igneous province, South Tibet: Implications for the initial activity of the Kerguelen plume".GEOLOGICAL SOCIETY OF AMERICA BULLETIN 130(2018):811-824. |
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