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DOI | 10.1038/s41467-017-00192-5 |
Metamorphic pressure variation in a coherent Alpine nappe challenges lithostatic pressure paradigm | |
Luisier, Cindy1; Baumgartner, Lukas1; Schmalholz, Stefan M.1; Siron, Guillaume1,2; Vennemann, Torsten3 | |
2019-10-18 | |
发表期刊 | NATURE COMMUNICATIONS |
ISSN | 2041-1723 |
出版年 | 2019 |
卷号 | 10 |
文章类型 | Article |
语种 | 英语 |
国家 | Switzerland; USA |
英文摘要 | Pressure-temperature-time paths obtained from minerals in metamorphic rocks allow the reconstruction of the geodynamic evolution of mountain ranges under the assumption that rock pressure is lithostatic. This lithostatic pressure paradigm enables converting the metamorphic pressure directly into the rock's burial depth and, hence, quantifying the rock's burial and exhumation history. In the coherent Monte Rosa tectonic unit, Western Alps, considerably different metamorphic pressures are determined in adjacent rocks. Here we show with field and microstructural observations, phase petrology and geochemistry that these pressure differences cannot be explained by tectonic mixing, retrogression of high-pressure minerals, or lack of equilibration of mineral assemblages. We propose that the determined pressure difference of 0.8 +/- 0.3 GPa is due to deviation from lithostatic pressure. We show with two analytical solutions for compression- and reaction-induced stress in mechanically heterogeneous rock that such pressure differences are mechanically feasible, supporting our interpretation of significant outcrop-scale pressure gradients. |
领域 | 资源环境 |
收录类别 | SCI-E |
WOS记录号 | WOS:000490981900003 |
WOS关键词 | MONTE-ROSA NAPPE ; CONSISTENT THERMODYNAMIC DATA ; WESTERN ALPS ; CHEMICAL-EQUILIBRIUM ; ELLIPTIC INCLUSIONS ; SHEAR ZONE ; EXHUMATION ; SCALE ; SUBDUCTION ; ASSEMBLAGE |
WOS类目 | Multidisciplinary Sciences |
WOS研究方向 | Science & Technology - Other Topics |
URL | 查看原文 |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://119.78.100.173/C666/handle/2XK7JSWQ/203406 |
专题 | 资源环境科学 |
作者单位 | 1.Univ Lausanne, Inst Earth Sci, CH-1015 Lausanne, Switzerland; 2.Univ Wisconsin, Dept Geosci, Madison, WI 53706 USA; 3.Univ Lausanne, Inst Earth Surface Dynam, CH-1015 Lausanne, Switzerland |
推荐引用方式 GB/T 7714 | Luisier, Cindy,Baumgartner, Lukas,Schmalholz, Stefan M.,et al. Metamorphic pressure variation in a coherent Alpine nappe challenges lithostatic pressure paradigm[J]. NATURE COMMUNICATIONS,2019,10. |
APA | Luisier, Cindy,Baumgartner, Lukas,Schmalholz, Stefan M.,Siron, Guillaume,&Vennemann, Torsten.(2019).Metamorphic pressure variation in a coherent Alpine nappe challenges lithostatic pressure paradigm.NATURE COMMUNICATIONS,10. |
MLA | Luisier, Cindy,et al."Metamorphic pressure variation in a coherent Alpine nappe challenges lithostatic pressure paradigm".NATURE COMMUNICATIONS 10(2019). |
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