THE CHARACTERISTICS AND MECHANISM OF ISLAND-ARC VOLCANISM ON THE CENTRAL AND SOUTHERN FILDES PENINSULA, KING-GEORGE-ISLAND, ANTARCTICA
文献类型：期刊论文
| 作者 | LI, ZN; LIU, XH; SHANG, RX |
| 刊名 | ACTA GEOLOGICA SINICA-ENGLISH EDITION
 |
| 出版日期 | 1992 |
| 卷号 | 5期号:1页码:39-57 |
| ISSN号 | 1000-9515 |
| 文献子类 | Article |
| 英文摘要 | The volcanic rock series on the Fildes Peninsula is the product of the later subduction of the Pacific plate beneath the Antarctic plate. It consists mainly of basalt, basaltic andesite and andesite with minor dacite. Its isotopic ages range from 64.6 +/- 1 to 43 +/- 2 Ma, belonging to Palaeocene to Eocene. Volcanism in the area may be divided into two phases. The contents of major oxides, rare earth elements (REE) and trace elements in volcanic rocks formed in different phases show regular changes, which are mainly related to the rock associations of these phases. Isotope geochemical studies indicate that the primitive magma in the area originating by partial melting in the upper mantle underwent fractional crystallization and ascended to the high-level (shallow) magma chamber. Before eruption the primitive basalt-andesitic magma was subjected to differentiation in the high-level magma chamber, forming zones of derivative magmas of different compositions. In various phases magma-conducting faults experienced periodic extension and cut through various derivative magma zones in different parts of the peninsula, leading to the eruption of magmas of different compositions on the surface and the formation of volcanic rock associations of corresponding compositions. |
| WOS研究方向 | Geology |
| 语种 | 英语 |
| WOS记录号 | WOS:A1992HT93200003 |
| 出版者 | PERGAMON-ELSEVIER SCIENCE LTD |
| 源URL | [http://ir.iggcas.ac.cn/handle/132A11/80358]  |
| 专题 | 中国科学院地质与地球物理研究所 |
| 通讯作者 | LI, ZN |
| 作者单位 | CHINESE ACAD SCI,INST GEOL,BEIJING,PEOPLES R CHINA |
| 推荐引用方式 GB/T 7714 | LI, ZN,LIU, XH,SHANG, RX. THE CHARACTERISTICS AND MECHANISM OF ISLAND-ARC VOLCANISM ON THE CENTRAL AND SOUTHERN FILDES PENINSULA, KING-GEORGE-ISLAND, ANTARCTICA[J]. ACTA GEOLOGICA SINICA-ENGLISH EDITION,1992,5(1):39-57. |
| APA | LI, ZN,LIU, XH,&SHANG, RX.(1992).THE CHARACTERISTICS AND MECHANISM OF ISLAND-ARC VOLCANISM ON THE CENTRAL AND SOUTHERN FILDES PENINSULA, KING-GEORGE-ISLAND, ANTARCTICA.ACTA GEOLOGICA SINICA-ENGLISH EDITION,5(1),39-57. |
| MLA | LI, ZN,et al."THE CHARACTERISTICS AND MECHANISM OF ISLAND-ARC VOLCANISM ON THE CENTRAL AND SOUTHERN FILDES PENINSULA, KING-GEORGE-ISLAND, ANTARCTICA".ACTA GEOLOGICA SINICA-ENGLISH EDITION 5.1(1992):39-57. |
入库方式： OAI收割
来源：地质与地球物理研究所
浏览0
下载0
收藏0
其他版本
除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。