[Geoinfo] Rv: VOLCANO: IUGG 2011 Session J-V07: Using Paleomagnetism to Understand Volcanic Processes

[Ivan A. Petrinovic]

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IUGG 2011 Session J-V07: Using Paleomagnetism to Understand Volcanic Processes
From: "Massimiliano Porreca" <Massimiliano.Porreca en azores.gov.pt>
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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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