Investigation of Curie point depth in Sulu ultrahigh-pressure metamorphic belt, eastern China
文献类型：期刊论文
| 作者 | Qiao Qingqing1,2; Liu Qingsheng1; Qiu Ning1; Fu Yuanyuan3; Zhao Sutao4; Wu Yao4; Yang Tao1; Jin Zhenmin4 |
| 刊名 | JOURNAL OF CHINA UNIVERSITY OF GEOSCIENCES
 |
| 出版日期 | 2008-06-01 |
| 卷号 | 19期号:3页码:282-291 |
| 关键词 | aeromagnetic anomaly Curie point geothermal structure Sulu UHP metamorphic belt |
| ISSN号 | 1002-0705 |
| 文献子类 | Article |
| 英文摘要 | The Curie point depth of continental crust can reflect the regional tectonic pattern and geothermal structures. Analysis of magnetism is an efficient way to obtain the Curie point depth on a regional scale. This study systematically investigated the Curie point depth of Sulu ultrahigh pressure (UHP) metamorphic belt (33 degrees 40'N to 36 degrees 20'N and 118 degrees E to 120 degrees E, ca. 60 000 km 2), eastern China using aeromagnetic data. The results show that the Curie point depth of the Sulu region varies from 18.5 to 27 km. The shallowest Curie point depth (ca. 18.5 km) is located in Subei subsidence, where the estimated temperature gradient value is about 31.35 degrees C/km, which is comparable with the measured value of 30 degrees C/km. In addition, a two-dimensional numerical solution of the heat conduction was used to calculate the temperature field to a depth of 30 km along the profile from Tancheng to Lianshui with a length of 139 km. The steady state model solved using the finite element method shows that the temperature around the Curie point depth is about 585.36 degrees C,which is close to the Curie temperature (580 degrees C) of magnetite at atmospheric pressure. These results provide new insights into the tectonic and continuous thermal structures of the Sulu UHP metamorphic belt. |
| WOS关键词 | MAGNETIC ANOMALY DATA ; SCIENTIFIC DRILLING PROJECT ; HEAT-FLOW DATA ; LU FAULT ZONE ; THERMAL STRUCTURE ; SPECTRUM ANALYSIS ; AEROMAGNETIC DATA ; TEMPERATURE ; JAPAN ; ORTHOGNEISS |
| WOS研究方向 | Geology |
| 语种 | 英语 |
| WOS记录号 | WOS:000257294800009 |
| 出版者 | CHINA UNIV GEOSCIENCES |
| 源URL | [http://ir.iggcas.ac.cn/handle/132A11/69116]  |
| 专题 | 中国科学院地质与地球物理研究所 |
| 通讯作者 | Liu Qingsheng |
| 作者单位 | 1.China Univ Geosci, Inst Geophys & Geomat, Wuhan 430074, Peoples R China 2.Chinese Acad Sci, Inst Geol & Geophys, Beijing 100029, Peoples R China 3.Peking Univ, Sch Earth & Space Sci, Beijing 100871, Peoples R China 4.China Univ Geosci, Fac Earth Sci, Wuhan 430074, Peoples R China |
| 推荐引用方式 GB/T 7714 | Qiao Qingqing,Liu Qingsheng,Qiu Ning,et al. Investigation of Curie point depth in Sulu ultrahigh-pressure metamorphic belt, eastern China[J]. JOURNAL OF CHINA UNIVERSITY OF GEOSCIENCES,2008,19(3):282-291. |
| APA | Qiao Qingqing.,Liu Qingsheng.,Qiu Ning.,Fu Yuanyuan.,Zhao Sutao.,...&Jin Zhenmin.(2008).Investigation of Curie point depth in Sulu ultrahigh-pressure metamorphic belt, eastern China.JOURNAL OF CHINA UNIVERSITY OF GEOSCIENCES,19(3),282-291. |
| MLA | Qiao Qingqing,et al."Investigation of Curie point depth in Sulu ultrahigh-pressure metamorphic belt, eastern China".JOURNAL OF CHINA UNIVERSITY OF GEOSCIENCES 19.3(2008):282-291. |
入库方式： OAI收割
来源：地质与地球物理研究所
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