Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1029/2021GL095175 |
The role of tuffs in sealing volcanic conduits | |
Shreya Kanakiya; Ludmila Adam; Michael C. Rowe; Jan M. Lindsay; Lionel Esteban | |
2021-10-01 | |
发表期刊 | Geophysical Research Letters
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出版年 | 2021 |
英文摘要 | Acid-sulfate alteration commonly changes the physicochemical properties of volcanic conduits. Although several conduit pressurization models suggest hydrothermal sealing, little experimental evidence exists from conduit-filling rocks on the development of such a seal. Here we show that acid-sulfate alteration affects conduit-filling lavas and tuffs differently, with implications for their role in sealing the conduit. In lavas, alteration creates fluid pathways and decreases rock stiffness by dissolving primary minerals. In contrast, in the inherently porous tuffs, alteration reduces fluid pathways and increases rock stiffness by precipitating secondary minerals. Compaction of tuffs under subsurface pressures together with such alteration-related sealing can form low porosity and low permeability zones within the conduit. Such zones could promote fluid-pressure build-up and predispose the volcano to explosive eruptions. We discuss our results in the context of observed seismicity and ground deformation and suggest using our elastic properties data to constrain geophysical inversions of acid-sulfate altered volcanic conduits. |
领域 | 气候变化 |
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/338846 |
专题 | 气候变化 |
推荐引用方式 GB/T 7714 | Shreya Kanakiya,Ludmila Adam,Michael C. Rowe,et al. The role of tuffs in sealing volcanic conduits[J]. Geophysical Research Letters,2021. |
APA | Shreya Kanakiya,Ludmila Adam,Michael C. Rowe,Jan M. Lindsay,&Lionel Esteban.(2021).The role of tuffs in sealing volcanic conduits.Geophysical Research Letters. |
MLA | Shreya Kanakiya,et al."The role of tuffs in sealing volcanic conduits".Geophysical Research Letters (2021). |
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