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IUGG 2011 Session J-V07: Using Paleomagnetism to Understand Volcanic Processes
From: "Massimiliano Porreca" <Massimiliano.Porreca@xxxxxxxxxxxxx>
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We encourage researchers to submit abstracts for the following symposium at the IUGG Conference, 28 June-7 July 2011, Melbourne, Australia.
IUGG Symposium J-V07: Using Paleomagnetism to Understand Volcanic Processes
Lead Convenors: Massimiliano Porreca (Azores, Portugal), Massimo Mattei (Italy), Michael Ort (United States of America), Laurie Brown (United States of America), John Geissman (United States of America)
Organiser: IAVCEI; Co-sponsor: IAGA
Scope: In the last two decades, there has been an increasing use of paleomagnetism to study different volcanic processes in active and old volcanoes. The many applications include all types of volcanic products, from extrusive to intrusive rocks, from lava to pyroclastic flows, from fallout to secondary reworked lahar deposits. The paleomagnetic techniques applied to these rocks can provide useful information about their age as well as aid in understanding eruptive, transport, and depositional processes. In active volcanoes, paleosecular variation (PSV) of the Earth's magnetic field is increasingly considered as a valid tool to date historical eruptions. The magnetization of volcanic products contains information about the thermal conditions during their emplacement. The most typical case is that of pyroclastic flows, for which the final temperature of deposition can be estimated by analyzing the magnetization in the lithic clasts. Transport and depositional process are also studied using anisotropy of magnetic susceptibility (AMS), which is a very rapid and reliable technique to investigate the mineral fabric of rocks. It is therefore a very useful method to infer flow directions in ignimbrites, lava and intrusive magmatic bodies (e.g. dikes, sills and plutons). Several other techniques are also being employed to better understand volcanic processes. This session will focus on how paleomagnetism and the study of magnetic fabric can help us better understand different volcanic processes. Approaches that employ a combination of paleomagnetism and other geophysical and geological approaches are particularly encouraged.
Abstracts are due 17 January 2011. Information can be found at www.iugg2011.com.
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