5-5-5-5-5-5-5-5-5-5-5-5-5-5 From: Rebecca DeGraffenried <rdegraff@xxxxxxxxxx> Dear Colleagues, We would like to draw your attention to Goldschmidt 2020 session 05m "*Magma on the Move: Influence of Rheology on Igneous Processes on Earth and Beyond*". A major topic our community strives to address is the influence of fluid rheology on igneous processes, ranging from magma transport in the subsurface to conduit flow to lava behavior on the Earth's surface. Additionally, rheology of erupted fluids on other celestial bodies is an active area of research. Thus, we welcome submissions on these topics, and we hope to receive a broad range of submissions that represent the scope of techniques used to tackle these topics. Please see below for additional session details. *Invited Speaker*: Edward Llewellin (Durham University) *Session Description*: The rheological behavior of magma exerts an important control on igneous processes, including separation of liquid from crystal mush, magma pooling and transport in the subsurface, conduit ascent dynamics, and whether magma erupts at the surface as pyroclasts or flowing lava. Rheological properties can change dramatically through space and time in response to changes in magma temperature and composition, and to processes such as crystallization and vesiculation. Many of these factors have non-linear effects, and in concert they can potentially trigger abrupt transitions between brittle and ductile behavior. External factors also matter; for example gravity, ambient temperature, and lava composition may all be different elsewhere in the solar system. Additionally, the stress field can orient particles and deform vesicles, changing the apparent viscosity as a function of time. All of these inter-dependent factors make modeling and/or predicting the movement of magma a complex challenge. However, innovations in computational and experimental techniques, as well as recent developments in monitoring and surface imaging at active volcanoes, have greatly improved our capacity to quantify factors that influence rheology. This session aims to synthesize various perspectives on the study of magma rheology and its influence on shallow-to-surface igneous processes on Earth and elsewhere in the solar system. We welcome contributions that utilize analog materials, high pressure/temperature experiments, analytical or numerical modeling, field observations, or newly developed methods. Studies that integrate various techniques or are directly relevant to Hawaiian volcanoes are particularly welcome. *Session Conveners*: Rebecca deGraffenried (University of Hawaii at Manoa), Atsuko Namiki (Hiroshima University), and Alan Whittington (University of Texas at San Antonio) Abstract submission is currently open and will close on February 14th. We look forward to seeing you in beautiful Honolulu! 5-5-5-5-5-5-5-5-5-5-5-5-5-5 ============================================================== Volcano Listserv is a collaborative venture among Arizona State University (ASU), Portland State University (PSU), the Global Volcanism Program (GVP) of the Smithsonian Institution's National Museum of Natural History, and the International Association for Volcanology and Chemistry of the Earth's Interior (IAVCEI). ASU - http://www.asu.edu/ PSU - http://pdx.edu/ GVP - http://www.volcano.si.edu/ IAVCEI - https://www.iavceivolcano.org/ To unsubscribe from the volcano list, send the message: signoff volcano to: listserv@xxxxxxx, or write to: volcano-request@xxxxxxx. To contribute to the volcano list, send your message to: volcano@xxxxxxx. Please do not send attachments. ============================================================== ------------------------------
