AGU Session V08: The Physics and Chemistry of Ignimbrites: 40 Years of Progress?

[Kirsten Chojnicki <kchojnic@xxxxxxx>]

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AGU Session V08: The Physics and Chemistry of Ignimbrites: 40 Years of Progress?
From: Colin Wilson  colin.wilson@xxxxxxxxx
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Dear Colleagues

It's coming up to that time of the year when the deadlines for the Fall
AGU meeting provide the incentive for some thinking about what to
present. We would invite you to consider a contribution to our session:

V08: The Physics and Chemistry of Ignimbrites: 40 Years of Progress?

Sponsor: Volcanology, Geochemistry and Petrology
CoSponsor:  Mineral and Rock Physics

Ignimbrites, or ash-flow tuffs, represent the largest erupted bodies of
silicic magma on Earth. Their eruptions are the largest credible
terrestrial natural hazard to humanity, and the deposits are the source
of knowledge about physical processes in the largest-scale explosive
eruptions and magmatic processes in the Earth's crust. In the ca. 40
years since R.L. Smith and co-workers published widely influential
reviews of ash-flow tuffs, many studies of the physics and chemistry of
ignimbrites and their eruptions have been presented, but there are
still numerous unanswered questions. This session seeks contributions
across the physical and chemical range of approaches to ignimbrites and
what can be learned about the timing and mechanisms for generation and
emplacement of these rock bodies. We encourage submissions that address
integrated approaches to the dynamics of ignimbrite emplacement,
impacts of such eruptions, and the nature and dynamics of the magmatic
systems that gave rise to these eruptions.

Within this session we would solicit contributions across three interleaved themes:
(a) The timing and eruptive dynamics of ignimbrite-producing events and
how these are reflected in, or revealed by, the shape, distribution and
internal architecture of the deposits.
(b) How information about the nature, form and dynamics of large
silicic magma chambers can be gained from studies of ignimbrites and
their eruptions.
(c) Insights into the internal or external factors that control when,
where and how large ignimbrite-forming eruptions occur from crustal
magma chambers.

We would like to see contributions that apply integrated approaches
(any combination of field, theoretical and laboratory-based) to yield
fundamental insights into how ignimbrite-forming volcanic systems
operate. In addition, we welcome contributions on any topical studies
within the broad area encompassed by the session title, with strong
encouragement for graduate students to submit abstracts. Many of the
concepts outlined by R.L. Smith and co-workers are still adhered to
today - how have we built on, or how can we improve on, these early
insights?

Please consider submitting an abstract for this session, and we look forward to seeing you at the meeting.

The Conveners:

Colin Wilson
Victoria University of Wellington
PO Box 600
Wellington 6040
New Zealand
+64 4 463 9510
colin.wilson@xxxxxxxxx<mailto:colin.wilson@xxxxxxxxx>

Steve Sparks
University of Bristol
Wills Memorial Building
Queens Road
Bristol BS8 1RJ
United Kingdom
steve.sparks@xxxxxxxxxxxxx<

mailto:steve.sparks@xxxxxxxxxxxxx>

Olivier Bachmann
University of Washington
Mailstop 351310
Seattle, WA 98195-1310
USA
bachmano@xxxxxxxxxxxxxxxx<mailto:bachmano@xxxxxxxxxxxxxxxx>

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