Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1002/2017GL074042 |
Permeability Evolution in Variably Glassy Basaltic Andesites Measured Under Magmatic Conditions | |
Kushnir, A. R. L.1,2; Martel, C.1; Champallier, R.1; Wadsworth, F. B.3 | |
2017-10-28 | |
发表期刊 | GEOPHYSICAL RESEARCH LETTERS
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ISSN | 0094-8276 |
EISSN | 1944-8007 |
出版年 | 2017 |
卷号 | 44期号:20 |
文章类型 | Article |
语种 | 英语 |
国家 | France; Germany |
英文摘要 | Heat from inflowing magma may act to seal permeable networks that assist passive outgassing at volcanic conduit margins and in overlying domes, reducing the efficiency of overpressure dissipation. Here we present a study of the evolution of permeability-measured under magmatic conditions-with increasing temperature in glassy and glass-poor basaltic andesites from Merapi volcano (Indonesia). Whereas the permeability of glass-poor rocks decreases little up to a temperature of 1,010 degrees C, glassy specimens experience a pronounced decrease in permeability above the glass transition once the viscosity of the crystal suspension is low enough to relax under external stresses. Changes in temperature alone are thus not enough to significantly modify the permeability of the glass-poor rocks that commonly form Merapi's dome. However, the presence of glass-rich domains in a dome may lead to local sealing of the volcanic plumbing between eruptions, exacerbating localized overpressure development that could contribute to explosivity. |
领域 | 气候变化 |
收录类别 | SCI-E |
WOS记录号 | WOS:000416761600022 |
WOS关键词 | VOLCANIC CONDUITS ; HIGH-TEMPERATURE ; SILICIC MAGMA ; POROSITY ; GRANITE ; DEFORMATION ; REDUCTION ; ERUPTION ; WATER ; DOME |
WOS类目 | Geosciences, Multidisciplinary |
WOS研究方向 | Geology |
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/27187 |
专题 | 气候变化 |
作者单位 | 1.Univ Orleans, UMR CNRS 7327, BRGM, ISTO, Orleans, France; 2.Univ Strasbourg, UMR CNRS 7516, IPGS, Strasbourg, France; 3.Ludwig Maximilians Univ Munchen, Dept Earth & Environm Sci, Munich, Germany |
推荐引用方式 GB/T 7714 | Kushnir, A. R. L.,Martel, C.,Champallier, R.,et al. Permeability Evolution in Variably Glassy Basaltic Andesites Measured Under Magmatic Conditions[J]. GEOPHYSICAL RESEARCH LETTERS,2017,44(20). |
APA | Kushnir, A. R. L.,Martel, C.,Champallier, R.,&Wadsworth, F. B..(2017).Permeability Evolution in Variably Glassy Basaltic Andesites Measured Under Magmatic Conditions.GEOPHYSICAL RESEARCH LETTERS,44(20). |
MLA | Kushnir, A. R. L.,et al."Permeability Evolution in Variably Glassy Basaltic Andesites Measured Under Magmatic Conditions".GEOPHYSICAL RESEARCH LETTERS 44.20(2017). |
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