Massive collapse of volcano edifices triggered by hydrothermal pressurization

Research Article| May 01, 2004 Massive collapse of volcano edifices triggered by hydrothermal pressurization Mark E. Reid Mark E. Reid 1U.S. Geological Survey, 345 Middlefield Road, MS 910, Menlo Park, California 94025, USA Search for other works by this author on: GSW Google Scholar Author and Article Information Mark E. Reid 1U.S. Geological Survey, 345 Middlefield Road, MS 910, Menlo Park, California 94025, USA Publisher: Geological Society of America Received: 28 Oct 2003 Revision Received: 16 Jan 2004 Accepted: 18 Jan 2004 First Online: 02 Mar 2017 Online ISSN: 1943-2682 Print ISSN: 0091-7613 Geological Society of America Geology (2004) 32 (5): 373–376. https://doi.org/10.1130/G20300.1 Article history Received: 28 Oct 2003 Revision Received: 16 Jan 2004 Accepted: 18 Jan 2004 First Online: 02 Mar 2017 Cite View This Citation Add to Citation Manager Share Icon Share Facebook Twitter LinkedIn Email Permissions Search Site Citation Mark E. Reid; Massive collapse of volcano edifices triggered by hydrothermal pressurization. Geology 2004;; 32 (5): 373–376. doi: https://doi.org/10.1130/G20300.1 Download citation file: Ris (Zotero) Refmanager EasyBib Bookends Mendeley Papers EndNote RefWorks BibTex toolbar search Search Dropdown Menu toolbar search search input Search input auto suggest filter your search All ContentBy SocietyGeology Search Advanced Search Abstract Catastrophic collapse of steep volcano flanks threatens lives at stratovolcanoes around the world. Although destabilizing shallow intrusion of magma into the edifice accompanies some collapses (e.g., Mount St. Helens), others have occurred without eruption of juvenile magmatic materials (e.g., Bandai). These latter collapses can be difficult to anticipate. Historic collapses without magmatic eruption are associated with shallow hydrothermal groundwater systems at the time of collapse. Through the use of numerical models of heat and groundwater flow, I evaluate the efficacy of hydrothermally driven collapse. Heating from remote magma intrusion at depth can generate temporarily elevated pore-fluid pressures that propagate upward into an edifice. Effective-stress deformation modeling shows that these pressures are capable of destabilizing the core of an edifice, resulting in massive, deep-seated collapse. Far-field pressurization only occurs with specific rock hydraulic properties; however, data from numerous hydrothermal systems illustrate that this process can transpire in realistic settings. You do not have access to this content, please speak to your institutional administrator if you feel you should have access.