Two kinds of granulites (HT-HP and HT-UHT) in North China Craton: Their genetic relation and geotectonic implications.
文献类型：期刊论文
| 作者 | Zhai MingGuo1,2 |
| 刊名 | ACTA PETROLOGICA SINICA
 |
| 出版日期 | 2009-08-01 |
| 卷号 | 25期号:8页码:1753-1771 |
| 关键词 | Early Precambrian HT-HP granulites HT-UHT granulites Tectonic implication North China Craton |
| ISSN号 | 1000-0569 |
| 英文摘要 | High-grade metamorphic rocks are extensively distributed in the North China Craton (NCC), and study on high-temperature and high-pressure granulites (HT-HP) and high- ultrahigh- temperature, granulites (HT-UHT) is a key issue to understanding the tectonic evolution of the Early Precambrian Earth. The HT-HP granulites are mainly garnet-bearing mafic granulites that are metamorphosed and deformed dykes enclosed in the orthogneisses. The HT-UHT rocks are metamorphosed pelites (khondalites), and sapphirine and spinal in khondalite indicates metamorphic temperature > 900 similar to 1000 degrees C. This paper deals with the occurrences, distribution, metamorphic conditions and history, isotopic ages of the two granulites, and emphasizes the following aspects: (1)the peak metamorphic conditions and P-T paths with a relief of pressure for two granulites are similar; (2)their metamorphic ages of the peak and followed decompressional stages are also similar; (3)HT-HP and HT-UHT granulites probably occur in area distribution other than in linear distribution; (4)high-grade granulites represent the Precambrain lowermost crust. Their metamorphic P/T gradients, uplifting rates, rigidities and protolith rock associations are significantly different from those of rocks in Phanerozoic orogenic belts. Therefore, the metamorphic geological setting and their original relation for the two granulites are most important in the future study. |
| 语种 | 英语 |
| WOS记录号 | WOS:000269813000003 |
| 出版者 | SCIENCE PRESS |
| 源URL | [http://ir.iggcas.ac.cn/handle/132A11/70720]  |
| 专题 | 中国科学院地质与地球物理研究所 |
| 通讯作者 | Zhai MingGuo |
| 作者单位 | 1.Chinese Acad Sci, Inst Geol & Geophys, State Key Lab Lithospher Evolut, Beijing 100029, Peoples R China 2.Chinese Acad Sci, Inst Geol & Geophys, Key Lab Mineral Resources, Beijing 100029, Peoples R China |
| 推荐引用方式 GB/T 7714 | Zhai MingGuo. Two kinds of granulites (HT-HP and HT-UHT) in North China Craton: Their genetic relation and geotectonic implications.[J]. ACTA PETROLOGICA SINICA,2009,25(8):1753-1771. |
| APA | Zhai MingGuo.(2009).Two kinds of granulites (HT-HP and HT-UHT) in North China Craton: Their genetic relation and geotectonic implications..ACTA PETROLOGICA SINICA,25(8),1753-1771. |
| MLA | Zhai MingGuo."Two kinds of granulites (HT-HP and HT-UHT) in North China Craton: Their genetic relation and geotectonic implications.".ACTA PETROLOGICA SINICA 25.8(2009):1753-1771. |
入库方式： OAI收割
来源：地质与地球物理研究所
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