Metamorphism and geochronology of the luoning metamorphic terrane, southern terminal of the palaeoproterozoic trans-north china orogen, north china craton
文献类型：期刊论文
| 作者 | Chen, Hong-Xu1; Wang, Juan2; Wang, Hao1; Wang, Guo-Dong1; Peng, Tao1; Shi, Yong-Hong2; Zhang, Qing3; Wu, Chun-Ming1 |
| 刊名 | Precambrian research
 |
| 出版日期 | 2015-07-01 |
| 卷号 | 264页码:156-178 |
| 关键词 | Luoning terrane Taihua metamorphic complex Palaeoproterozoic trans-north china Orogen Metamorphic p-t path Sims u-pb dating North china craton |
| ISSN号 | 0301-9268 |
| DOI | 10.1016/j.precamres.2015.04.013 |
| 通讯作者 | Wu, chun-ming(wucm@ucas.ac.cn) |
| 英文摘要 | Garnet-bearing amphibolites and metapelites of the luoning metamorphic terrane, taihua metamorphic complex, southern terminal of the palaeoproterozoic trans-north china orogen (tnco), preserve different metamorphic mineral assemblages formed at three metamorphic stages in the palaeoproterozoic. the prograde mineral assemblages (m1) comprise of hornblende + plagioclase + quartz biotite inclusions preserved in the garnet porphyroblasts in the amphibolites or quartz + biotite + plagioclase inclusions preserved in the garnet porphyroblasts in the metapelites. the metamorphic peak mineral assemblages (m2) are represented by the garnet porphyroblasts as well as the matrix minerals plagioclase + hornblende biotite +/- quartz in the amphibolites or quartz + biotite + plagioclase +/- hornblende in the metapelites, respectively. the retrograde mineral assemblages (m3) are the worm-like, fine-grained "white-eye socket" symplectitic assemblages formed between the relict garnet porphyroblasts and the matrix minerals, consisting of plagioclase + hornblende +/- biotite intergrowths in the amphibolites or plagioclase + biotite + quartz intergrowths in the metapelites, respectively. geothermobarometric computation shows that the luoning terrane records clockwise p-t trajectories including near isothermal decompression (itd) processes, from 630-790 degrees c/5.3-8.9 kbar through 720-820 degrees c/8.9-10.7 kbar to 690-740 degrees c/7.1-7.7 kbar. sims u-pb dating of zircons separated from the amphibolites and metapelites presents that the age of the protolith of the amphibolites is similar to 2.32 ga and the metamorphism occurred during 1.97-1.94 ga, suggesting that the subduction-collision and the subsequent exhumation occurred in the late palaeoproterozoic. combined with the literature data of the different discrete terranes within the trans-north china orogen, it is further deciphered that the tectono-metamorphic event of the trans-north china orogen started as early as 1.97 ga and lasted as late as 1.80 ga, suggesting that the tectono-metamorphic event of the orogen is a long and complex history. (c) 2015 elsevier b.v. all rights reserved. |
| WOS关键词 | HIGH-PRESSURE GRANULITES ; P-T PATHS ; PALEOPROTEROZOIC TECTONIC EVOLUTION ; TEMPERATURE-TIME PATHS ; LOWER CRUSTAL SECTION ; U-PB ; HENAN PROVINCE ; ZIRCON GEOCHRONOLOGY ; TAIHUA COMPLEX ; REGIONAL METAMORPHISM |
| WOS研究方向 | Geology |
| WOS类目 | Geosciences, Multidisciplinary |
| 语种 | 英语 |
| WOS记录号 | WOS:000356190900010 |
| 出版者 | ELSEVIER SCIENCE BV |
| URI标识 | http://www.irgrid.ac.cn/handle/1471x/2376480 |
| 专题 | 中国科学院大学 |
| 通讯作者 | Wu, Chun-Ming |
| 作者单位 | 1.Univ Chinese Acad Sci, Coll Earth Sci, Beijing 100049, Peoples R China 2.Hefei Univ Technol, Sch Resources & Environm Engn, Hefei 230009, Peoples R China 3.Chinese Acad Geol Sci, Inst Geomech, Beijing 100081, Peoples R China |
| 推荐引用方式 GB/T 7714 | Chen, Hong-Xu,Wang, Juan,Wang, Hao,et al. Metamorphism and geochronology of the luoning metamorphic terrane, southern terminal of the palaeoproterozoic trans-north china orogen, north china craton[J]. Precambrian research,2015,264:156-178. |
| APA | Chen, Hong-Xu.,Wang, Juan.,Wang, Hao.,Wang, Guo-Dong.,Peng, Tao.,...&Wu, Chun-Ming.(2015).Metamorphism and geochronology of the luoning metamorphic terrane, southern terminal of the palaeoproterozoic trans-north china orogen, north china craton.Precambrian research,264,156-178. |
| MLA | Chen, Hong-Xu,et al."Metamorphism and geochronology of the luoning metamorphic terrane, southern terminal of the palaeoproterozoic trans-north china orogen, north china craton".Precambrian research 264(2015):156-178. |
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来源：中国科学院大学
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