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Fall AGU Session: What Makes an Eruption "Super"?
New Methods Yield New Insights About Very Large Calderas and Their
Eruptive Products
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From: Jake Lowenstern <jlwnstrn@xxxxxxxx>
Dear Colleagues:
Please consider submitting an abstract to the following session at
Fall AGU. Abstracts are due September 7, 2006.
V06: What Makes an Eruption "Super"? New Methods Yield New Insights
About Very Large Calderas and Their Eruptive Products
The explosive eruption of large volumes of silicic magma can influence
climate on a global scale, and has direct catastrophic effects, in some
cases spanning continents. Recent television documentaries, movies and
novels speculate on the initiation and aftermath of these rhyolitic
super-eruptions, thereby focusing public attention on the current state
of scientific knowledge. This session aims to summarize present
understanding by inviting contributions on the histories of
super-eruptions and the processes leading to large-volume ignimbrite
sheets, and their atmospheric aftermaths. Invited and submitted
presentations will focus on new lines of research by isotopic and
trace-element methods to unravel the complex histories of crystal and
melt populations in super-eruption deposits. Contributions are also
sought on the physics of caldera formation, pre- and post-caldera
dynamics of shallow silicic magmas chambers and their associated
hydrothermal systems, isotopic studies of erupted aerosols,atmospheric
effects, and field, laboratory and theoretical investigations of
plutonic and volcanic rocks relevant to understanding this largest scale
of silicic volcanic eruptions.
Conveners:
Ilya Bindeman
University of Oregon
USA
bindeman@xxxxxxxxxxx
Jake Lowenstern
USGS
USA
jlwnstrn@xxxxxxxx
Tom Sisson
USGS
USA
tsisson@xxxxxxxx
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