V21A:
Conduit and Surface Dynamics of Silicic Magmas and Lavas I

Submit an Abstract to this Session



Session ID#: 35669

Session Description:
The dynamics of silicic magmas during conduit ascent and effusion are controlled by diverse intensive, extensive, and mechanical parameters. During conduit ascent, those parameters control explosivity, or lack thereof. They also must vary greatly between effusive eruptions; from small, steep domes to extensive, large-volume flows. Recent eruptions in Chile and advances in experimental techniques have produced quantitative constraints on the interplay between rheology, permeability, degassing in silicic magmas. We seek submissions that explore the behavior of pre-fragmentation silicic magmas by investigating the timescales, physical conditions, and mechanical-temporal aspects ongoing during conduit ascent and effusive emplacement.
Primary Convener:  Graham D Andrews, West Virginia University, Department of Geology and Geography, Morgantown, WV, United States
Conveners:  Kenneth S Befus, Baylor University, Waco, TX, United States and Alan G Whittington, University of Texas at San Antonio, Heat And Mass Transfer & Experimental Rheology (HAMsTER) lab, Earth and Planetary Sciences, San Antonio, United States
Chairs:  Kenneth S Befus, Baylor University, Waco, TX, United States, Graham D Andrews, California State University Bakersfield, Geosciences, Bakersfield, United States and Alan G Whittington, University of Missouri, Geological Sciences, Columbia, United States
OSPA Liaison:  Graham D Andrews, California State University Bakersfield, Geosciences, Bakersfield, United States

Cross-Listed:
  • NH - Natural Hazards
  • P - Planetary Sciences
Index Terms:

8414 Eruption mechanisms and flow emplacement [VOLCANOLOGY]
8425 Effusive volcanism [VOLCANOLOGY]
8429 Lava rheology and morphology [VOLCANOLOGY]
8434 Magma migration and fragmentation [VOLCANOLOGY]

Abstracts Submitted to this Session:

There and back again: The life and death of magma permeability in volcanic conduits (Invited) (291088)
Fabian B Wadsworth1, Jeremie Vasseur1, Edward W Llewellin2, Yan Lavallée3, Jackie E Kendrick3, Katherine J Dobson4, Michael John Heap5, Alexandra R Kushnir5 and Donald B Dingwell6, (1)Ludwig Maximilians University of Munich, Munich, Germany, (2)Durham University, Earth Sciences, Durham, United Kingdom, (3)University of Liverpool, Department of Earth, Ocean and Ecological Sciences, Liverpool, United Kingdom, (4)University of Durham, Earth Sciences, Durham, United Kingdom, (5)EOST École et Observatoire des Sciences de la Terre, Strasbourg Cedex, France, (6)LMU, Munich, Germany
Physical mechanisms leading to two-dimensional gas content evolution within a volcanic conduit (211594)
Marielle Collombet, ISTerre, Le Bourget du Lac, France, Alain Burgisser, Institut de Sciences de la Terre, Université Savoie Mont Blanc, Le Bourget du Lac, France and Laure Anne, Claire Chevalier, ISTerre Institute of Earth Sciences, Saint Martin d'Hères, France
Magma shearing and friction in the volcanic conduit: A crystal constraint (255797)
Paul Anthony Wallace1, Jackie E Kendrick1, Sarah Henton De Angelis2, James D Ashworth3, Rebecca Coats2, Takahiro Miwa4, Elisabetta Mariani5 and Yan Lavallée3, (1)University of Liverpool, Department of Earth, Ocean and Ecological Sciences, Liverpool, United Kingdom, (2)University of Liverpool, Liverpool, L69, United Kingdom, (3)University of Liverpool, Liverpool, United Kingdom, (4)NIED National Research Institute for Earth Science and Disaster Prevention, Tsukuba, Japan, (5)University of Liverpool, Earth, Ocean and Ecological Sciences, Liverpool, United Kingdom
Understanding the rheology of two and three-phase magmas (223587)
Rebecca Coats1, Biao Cai2, Jackie E Kendrick3, Paul Anthony Wallace4, Adrian J Hornby4, Takahiro Miwa5, Felix W. von Aulock4, James D Ashworth4, Jose Godinho2, Robert C. Atwood6, Peter D Lee7 and Yan Lavallée3, (1)University of Liverpool, Liverpool, L69, United Kingdom, (2)University of Manchester, Manchester, United Kingdom, (3)University of Liverpool, Department of Earth, Ocean and Ecological Sciences, Liverpool, United Kingdom, (4)University of Liverpool, Liverpool, United Kingdom, (5)NIED National Research Institute for Earth Science and Disaster Prevention, Tsukuba, Japan, (6)Diamond Light Source, Didcot, United Kingdom, (7)University of Manchester, Manchester X-Ray Imaging Facility, Manchester, United Kingdom
Numerical analysis of pressure and porosity evolution in lava domes during periodic degassing conditions (288039)
David Matthew Hyman, University at Buffalo, Buffalo, United States, Marcus I Bursik, University at Buffalo, Department of Earth Sciences, Buffalo, NY, United States and E Bruce Pitman, University at Buffalo, Department of Materials Design and Innovation, Buffalo, NY, United States
Investigating lava flows at Quizapu Volcano, on the ground and in the air (297981)
Einat Lev, Columbia University of New York, Palisades, United States, Philipp Ruprecht, Lamont -Doherty Earth Observatory, Palisades, United States and Robert S Moon, Columbia University, New York, NY, United States

See more of: Volcanology, Geochemistry and Petrology