*********************************************************************** From: Shan de Silva <desilvas@xxxxxxxxxxxxxxxxxxxxxxx> *********************************************************************** Colleagues We would like to remind you of the upcoming IAVCEI abstract deadline on 1 April, and use this opportunity to draw your attention to the session 2-L "Physical characteristics of ignimbrites". The shape, distribution and physical appearance of ignimbrite deposits is influenced by many factors, occurring on a range of scales, both during and post-emplacement. This session will be concerned with observations and measurements of ignimbrites from field to remote sensing level that can lead to better characterization of ignimbrite extents, sources, lithologies, welding intensity (rank or grade), and depositional, post-depositional, and erosion histories. This increased understand of ignimbrite properties will lead to a greater understanding of emplacement mechanisms and the processes behind large-scale eruptive volcanism. This session will focus on: - Surface characteristics and geomorphology - Physical structure (e.g., layers or zones within ignimbrites and their interpretation) - Ignimbrite features (e.g., degassing pipes) - Welding - Post-emplacement features (e.g., vapor-phase alteration) - Erosional properties and features J. E. Bailey, Alaska Volcano Observatory, jbailey@xxxxxxxxxxxxx S. Self, Volcano Dynamics Group, Open University, Stephen.Self@xxxxxxxxxx S. de Silva, Department of Geosciences, Oregon State University, desilvas@xxxxxxxxxxxxxxxxxxx Andres Pavez A., Departamento de Geofisica, Universidad de Chile, apavez@xxxxxxxxxxxxx For abstract submission, follow this link: http://www.iavcei2008.hi.is/page/I08-absub ============================================================== To unsubscribe from the volcano list, send the message: signoff volcano to: listserv@xxxxxxx, or write to: volcano-request@xxxxxxxx To contribute to the volcano list, send your message to: volcano@xxxxxxxx Please do not send attachments. ==============================================================
