Magma-thermal field: Its basic characteristics, and differences with geothermal field
文献类型：期刊论文
| 作者 | Zhang Qi1; Jin WeiJun1 ; Li ChengDong2; Jiao ShouTao1
|
| 刊名 | ACTA PETROLOGICA SINICA
 |
| 出版日期 | 2014-02-01 |
| 卷号 | 30期号:2页码:341-349 |
| 关键词 | Geothermal field Magma-thermal field Isotherms Fluid Difference Scale Instantly |
| ISSN号 | 1000-0569 |
| 文献子类 | Article |
| 英文摘要 | The magma-thermal field indicates the instantaneous thermal field caused by magma. The heat in the thermal field mainly from unconsolidated magma has heated the surrounding rock. The lower crust, middle crust and the lower part of the upper crust maintains a high temperature state in a short time. There are many differences between a magma-thermal field and a geothermal field: (1) The different heat source. The heat in geothermal field is generated by the crustal radioactive material of the overlay rocks; otherwise the heat in a magma-thermal field comes from the magma. (2) The different distribution. The isotherm of the geothermal field was of horizontal, and it increases with increasing depth; the temperature contour of magma thermal fields is of surrounding about the intrusions, it is of high temperature close to intrusion, and lower one away from the intrusions, the isotherm of the magma thermal fields is perpendicular to the geothermal field isotherm. (3) The different scales of thermal field. The geothermal field is global; the magma thermal field is localized only where the magma exists, small scale with smaller intrusion (only a few meters or tens of meters in the width), large scale with larger intrusion (a few kilometers in the width). The magma thermal field is of up to hundreds or thousands of kilometers in the length and width if there is large-scale magmatic activity, such as large-scale magmatic activity in eastern China during the Mesozoic era. (4) The different duration of heat maintain. The geothermal field can last for a very long time (tens, hundreds or thousands of millions of years); the magma thermal field is instantaneous event, last from a few years to a few million years. It is the most important implication that the magma thermal field supplies the hydrothermal rise channel on which it is fever to fluid (hydrothermal) activities under the crust bottom and crust-mantle transition zone, so that the ore-bearing hydrothermal rise smoothly, active fully, convect, and extract mineralization metal elements in the surrounding rock, and precipitation enrichment and mineralization in a suitable site on the shallow crust within the thermal field scope. The concept 'Magma-thermal field' relies on the deep understanding of the physical properties and processes of magma, and is still very superficial due to our relative lack of knowledge. |
| WOS关键词 | GRANITE EMPLACEMENT ; IGNEOUS INTRUSIONS ; CONTINENTAL-CRUST ; HEAT-TRANSFER ; SOUTH CHINA ; GRADIENTS ; TEMPERATURE ; CHAMBERS ; SIMULATION ; MECHANISM |
| WOS研究方向 | Geology |
| 语种 | 英语 |
| WOS记录号 | WOS:000333224500003 |
| 出版者 | SCIENCE PRESS |
| 源URL | [http://ir.iggcas.ac.cn/handle/132A11/85177]  |
| 专题 | 中国科学院地质与地球物理研究所 |
| 通讯作者 | Zhang Qi |
| 作者单位 | 1.Chinese Acad Sci, Inst Geol & Geophys, Beijing 100029, Peoples R China 2.China Geol Survey, Tianjin Inst Geol & Mineral Resources, Tianjin 300170, Peoples R China |
| 推荐引用方式 GB/T 7714 | Zhang Qi,Jin WeiJun,Li ChengDong,et al. Magma-thermal field: Its basic characteristics, and differences with geothermal field[J]. ACTA PETROLOGICA SINICA,2014,30(2):341-349. |
| APA | Zhang Qi,Jin WeiJun,Li ChengDong,&Jiao ShouTao.(2014).Magma-thermal field: Its basic characteristics, and differences with geothermal field.ACTA PETROLOGICA SINICA,30(2),341-349. |
| MLA | Zhang Qi,et al."Magma-thermal field: Its basic characteristics, and differences with geothermal field".ACTA PETROLOGICA SINICA 30.2(2014):341-349. |
入库方式： OAI收割
来源：地质与地球物理研究所
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