Quantitative P-T-X constraints on orthopyroxene-bearing high-pressure granulites in felsic-metapelitic rocks: evidence from the Huangtuling granulite, Dabieshan Orogen
文献类型：期刊论文
| 作者 | Chen, Y.1; Ye, K.1; Liu, J-B.1; Sun, M.2 |
| 刊名 | JOURNAL OF METAMORPHIC GEOLOGY
 |
| 出版日期 | 2008 |
| 卷号 | 26期号:1页码:1-15 |
| 关键词 | high-pressure granulite NCKFMASHTO system orthopyroxene P-T-X pseudosections |
| ISSN号 | 0263-4929 |
| DOI | 10.1111/j.1525-1314.2007.00742.x |
| 文献子类 | Article |
| 英文摘要 | High-pressure granulites are generally characterized by the absence of orthopyroxene. However, orthopyroxene is reported in a few high-pressure, felsic-metapelitic granulites, such as the Huangtuling felsic high-pressure granulite in the North Dabie metamorphic core complex in east-central China, which rarely preserves the high-pressure granulite facies assemblage of garnet + orthopyroxene + biotite + plagioclase + K-feldspar + quartz. To investigate the effects of bulk-rock composition on the stability of orthopyroxene-bearing, high-pressure granulite facies assemblages in the NCKFMASHTO (Na2O-CaO-K2O-FeO-MgO-Al2O3-SiO2-H2O-TiO2-Fe2O3) system, a series of P-T-X pseudosections based on the melt-reintegrated composition of the Huangtuling felsic high-pressure granulite were constructed. Calculations demonstrate that the orthopyroxene-bearing, high-pressure granulite facies assemblages are restricted to low X-Al [Al2O3/(Na2O + CaO + K2O + FeO + MgO + Al2O3) < 0.35, mole proportion] or high X-Mg [MgO/(MgO + FeO) > 0.85] felsic-metapelitic rock types. This study also reveals that the X-Al values in the residual felsic-metapelitic, high-pressure granulites could be significantly reduced by a high proportion of melt loss. We suggest that orthopyroxene-bearing, high-pressure granulites occur in residual overthickened crustal basement under continental subduction-collision zones and arc-continent collision belts. |
| WOS关键词 | MINERAL EQUILIBRIA CALCULATIONS ; HIGH-TEMPERATURE METAMORPHISM ; PARTIAL MELTING EQUILIBRIA ; ULTRAHIGH-TEMPERATURE ; SOUTH HARRIS ; SYSTEM K2O-FEO-MGO-AL2O3-SIO2-H2O-TIO2-FE2O3 ; GRANITE CONNECTION ; NW SCOTLAND ; EVOLUTION ; COMPLEX |
| WOS研究方向 | Geology |
| 语种 | 英语 |
| WOS记录号 | WOS:000251811300001 |
| 出版者 | BLACKWELL PUBLISHING |
| 源URL | [http://ir.iggcas.ac.cn/handle/132A11/70160]  |
| 专题 | 中国科学院地质与地球物理研究所 |
| 通讯作者 | Chen, Y. |
| 作者单位 | 1.Chinese Acad Sci, Inst Geol & Geophys, State Key Lab Lithospher Evolut, Beijing 100029, Peoples R China 2.Univ Hong Kong, Dept Earth Sci, Hong Kong, Hong Kong, Peoples R China |
| 推荐引用方式 GB/T 7714 | Chen, Y.,Ye, K.,Liu, J-B.,et al. Quantitative P-T-X constraints on orthopyroxene-bearing high-pressure granulites in felsic-metapelitic rocks: evidence from the Huangtuling granulite, Dabieshan Orogen[J]. JOURNAL OF METAMORPHIC GEOLOGY,2008,26(1):1-15. |
| APA | Chen, Y.,Ye, K.,Liu, J-B.,&Sun, M..(2008).Quantitative P-T-X constraints on orthopyroxene-bearing high-pressure granulites in felsic-metapelitic rocks: evidence from the Huangtuling granulite, Dabieshan Orogen.JOURNAL OF METAMORPHIC GEOLOGY,26(1),1-15. |
| MLA | Chen, Y.,et al."Quantitative P-T-X constraints on orthopyroxene-bearing high-pressure granulites in felsic-metapelitic rocks: evidence from the Huangtuling granulite, Dabieshan Orogen".JOURNAL OF METAMORPHIC GEOLOGY 26.1(2008):1-15. |
入库方式： OAI收割
来源：地质与地球物理研究所
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