Zircon U-Pb age and Hf isotope of intrusive rocks from the Yawa area in the west part of southern Lhasa terrane, Tibet
文献类型：期刊论文
| 作者 | Zhang Hao1,2; Ji WeiQiang1; Zhang ShaoHua1,2; Wang JianGang1; Wu FuYuan1 |
| 刊名 | ACTA PETROLOGICA SINICA
 |
| 出版日期 | 2019 |
| 卷号 | 35期号:2页码:423-438 |
| 关键词 | Yawa area Southern Lhasa terrane Zircon U-Pb age and Hf isotope Ancient basement Crustal growth |
| ISSN号 | 1000-0569 |
| DOI | 10.18654/1000-0569/2019.02.10 |
| 英文摘要 | The Lhasa terrane developed widespread magmatism along its southern margin in the Mesozoic to Cenozoic Period. However, relative small number of studies has conducted for the magmatic rocks from the west part of the southern Lhasa terrane, especially for the Mesozoic magmatic rocks. This contribution presented a study of zircon U-Pb age and Hf isotope for the newly found Mesozoic to Cenozoic intrusive rocks from the Yawa area in the west part of southern Lhasa terrane, and identified Late Triassic gabbro and dioritic porphyrites (210 similar to 208Ma), Late Jurassic porphyritic monzogranites (ca. 155Ma) and Eocene granitic porphyry (ca. 50Ma). The Late Triassic gabbro and dioritic porphyrite have highly radiogenic zircon Hf isotopic compositions with eHf(t) values of +1.9 similar to +6.2 and-3.0 similar to +7. 4, respectively; while the Late Jurassic porphyritic monzogranite and the Eocene granitic porphyry show low initial zircon Hf isotope values of epsilon(Hf)(t) varying in ranges of- 10. 0 similar to -5. 2 and- 7. 9 similar to -2. 7, respectively, and their corresponding crustal model ages, which can be divided into two groups of 1534 similar to 1836Ma and 1297 similar to 1624Ma, respectively, indicate the existence of the recycled Paleoproterozoic and Mesoproterozoic crustal materials, respectively. In combination with literature data, the Yawa-Dajiaco area underwent obvious crustal growth due to the subduction of Neo-Tethyan ocean. The generation of juvenile crust exhibit gradient trends of increase both from Mesozoic to Early Cenozoic and from inland to trench. |
| WOS关键词 | SIERRA-NEVADA ; GANGDESE BELT ; CRUSTAL GROWTH ; CONSTRAINTS ; EVOLUTION ; MAGMATISM ; GRANITES ; PETROGENESIS ; LITHOSPHERE ; BATHOLITHS |
| WOS研究方向 | Geology |
| 语种 | 英语 |
| WOS记录号 | WOS:000471114000010 |
| 出版者 | SCIENCE PRESS |
| 源URL | [http://ir.iggcas.ac.cn/handle/132A11/92527]  |
| 专题 | 地质与地球物理研究所_岩石圈演化国家重点实验室 |
| 通讯作者 | Ji WeiQiang |
| 作者单位 | 1.Chinese Acad Sci, State Key Lab Lithospher Evolut, Inst Geol & Geophys, Beijing 100029, Peoples R China 2.Univ Chinese Acad Sci, Coll Earth & Planetary Sci, Beijing 100049, Peoples R China |
| 推荐引用方式 GB/T 7714 | Zhang Hao,Ji WeiQiang,Zhang ShaoHua,et al. Zircon U-Pb age and Hf isotope of intrusive rocks from the Yawa area in the west part of southern Lhasa terrane, Tibet[J]. ACTA PETROLOGICA SINICA,2019,35(2):423-438. |
| APA | Zhang Hao,Ji WeiQiang,Zhang ShaoHua,Wang JianGang,&Wu FuYuan.(2019).Zircon U-Pb age and Hf isotope of intrusive rocks from the Yawa area in the west part of southern Lhasa terrane, Tibet.ACTA PETROLOGICA SINICA,35(2),423-438. |
| MLA | Zhang Hao,et al."Zircon U-Pb age and Hf isotope of intrusive rocks from the Yawa area in the west part of southern Lhasa terrane, Tibet".ACTA PETROLOGICA SINICA 35.2(2019):423-438. |
入库方式： OAI收割
来源：地质与地球物理研究所
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