New evidence for an old idea: Geochronological constraints for a paired metamorphic belt in the central European Variscides
文献类型：期刊论文
| 作者 | Will, T. M.1; Schmaedicke, E.2; Ling, X. -X.3; Li, X. -H.3; Li, Q-L.3 |
| 刊名 | LITHOS
 |
| 出版日期 | 2018-03-01 |
| 卷号 | 302页码:278-297 |
| ISSN号 | 0024-4937 |
| 关键词 | Odenwald-Spessart basement Variscan orogeny Paired metamorphic belt U-Pb geochronology Lu-Hf isotope data |
| DOI | 10.1016/j.lithos.2018.01.008 |
| 文献子类 | Article |
| 英文摘要 | New geochronological data reveal a prolonged tectonothermal evolution of the Variscan Odenwald-Spessart basement, being part of the Mid-German Crystalline Zone in central Europe. We report the results from (i) secondary ion mass spectrometry (SIMS) U-Pb dating of zircon, rutile and monazite, (ii) SIMS zircon oxygen isotope analyses, (iii) laser ablation-multicollector-inductively coupled plasma mass spectrometry (LA-MC-ICPMS) zircon Lu-Hf isotope analyses and, (iv) LA-ICPMS zircon and rutile trace element data for a suite of metamorphic rocks (five amphibolite- and eclogite-facies mafic meta-igneous rocks and one granulite-facies. paragneiss). The protoliths of the mafic rocks formed from juvenile as well as depleted mantle sources in distinct tectonic environments at different times. Magmatism took place at a divergent oceanic margin (possibly in a back-arc setting) at 460 Ma, in an intraoceanic basin at ca. 445 Ma and at a continental margin at 329 Ma. Regardless of lithology, zircon in eclogite, amphibolite and high-temperature paragneiss provide almost identical Carboniferous ages of 333.7 +/- 4.1 Ma (eclogite), 329.1 +/- 1.8 to 328.4 +/- 8.9 Ma (amphibolite), and 334.0 +/- 2.0 Ma (paragneiss), respectively. Rutile yielded ages of 328.6 +/- 4.7 and 321.4 +/- 7.0 Ma in eclogite and amphibolite, and monazite in high-temperature paragneiss grew at 330.1 +/- 2.4 Ma (all ages are quoted at the 2 sigma level). The data constrain coeval high-pressure eclogite- and high-temperature granulite-facies metamorphism of the Odenwald-Spessart basement at ca. 330 Ma. Amphibolite-facies conditions were attained shortly afterwards. The lower plate eclogite formed in a fossil subduction zone and the upper plate high-temperature, low-pressure rocks are the remains of an eroded Carboniferous magmatic arc. The close proximity of tectonically juxtaposed units of such radically different metamorphic conditions and thermal gradients is characteristic for a paired metamorphic belt sensu Miyashiro (1961). Thus, the Odenwald-Spessart basement represents the first recognised paired metamorphic belt in the European Variscides. (C) 2018 Elsevier B.V. All rights reserved. |
| WOS关键词 | ODENWALD CRYSTALLINE COMPLEX ; HIGH-PRESSURE METAMORPHISM ; NATURAL REFERENCE MATERIAL ; U-PB SYSTEMATICS ; TI-IN-ZIRCON ; CONTINENTAL LITHOSPHERE ; STRUCTURAL EVOLUTION ; GRANITOID MAGMATISM ; BOLLSTEIN-ODENWALD ; WORKING REFERENCE |
| WOS研究方向 | Geochemistry & Geophysics ; Mineralogy |
| 语种 | 英语 |
| 出版者 | ELSEVIER SCIENCE BV |
| WOS记录号 | WOS:000428497500017 |
| 资助机构 | Chinese Academy of Sciences ; Chinese Academy of Sciences ; Chinese State Key Research and Development Program(2016YFE0203000) ; Chinese State Key Research and Development Program(2016YFE0203000) ; Chinese Academy of Sciences ; Chinese Academy of Sciences ; Chinese State Key Research and Development Program(2016YFE0203000) ; Chinese State Key Research and Development Program(2016YFE0203000) ; Chinese Academy of Sciences ; Chinese Academy of Sciences ; Chinese State Key Research and Development Program(2016YFE0203000) ; Chinese State Key Research and Development Program(2016YFE0203000) ; Chinese Academy of Sciences ; Chinese Academy of Sciences ; Chinese State Key Research and Development Program(2016YFE0203000) ; Chinese State Key Research and Development Program(2016YFE0203000) |
| 源URL | [http://ir.iggcas.ac.cn/handle/132A11/83148]  |
| 专题 | 中国科学院地质与地球物理研究所 |
| 通讯作者 | Will, T. M. |
| 作者单位 | 1.Univ Wurzburg, Inst Geog & Geol, D-97074 Wurzburg, Germany 2.Univ Erlangen Nurnberg, GeoZentrum Nordbayern, Schlossgarten 5A, D-91054 Erlangen, Germany 3.Chinese Acad Sci, Inst Geol & Geophys, State Key Lab Lithospher Evolut, Beijing 100029, Peoples R China |
| 推荐引用方式 GB/T 7714 | Will, T. M.,Schmaedicke, E.,Ling, X. -X.,et al. New evidence for an old idea: Geochronological constraints for a paired metamorphic belt in the central European Variscides[J]. LITHOS,2018,302:278-297. |
| APA | Will, T. M.,Schmaedicke, E.,Ling, X. -X.,Li, X. -H.,&Li, Q-L..(2018).New evidence for an old idea: Geochronological constraints for a paired metamorphic belt in the central European Variscides.LITHOS,302,278-297. |
| MLA | Will, T. M.,et al."New evidence for an old idea: Geochronological constraints for a paired metamorphic belt in the central European Variscides".LITHOS 302(2018):278-297. |
入库方式： OAI收割
来源：地质与地球物理研究所
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