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EGU Session Reminder: GMPV2/IG20 Magma mixing and its role in producing compositional diversity in igneous rocks: petrological and volcanological issues
From: "Cristina P. De Campos" <campos@xxxxxxxxxxxxxxxxxxx>
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Dear Colleagues,
We would like to remind you that the deadline for submitting an abstract to
our GMPV2/IG20 session
“Magma mixing and its role in producing compositional diversity in igneous
rocks: petrological and volcanological issues”, during next EGU (European
Geosciences Union) meeting in Vienna (03 – 08 April 2011) has been extended
to Tuesday, 11 January 2011 (24:00, GMT).
Please consider attending the meeting and submitting an abstract.
Sincerely Yours
Cristina de Campos
Diego Perugini
<http://meetings.copernicus.org/egu2011/abstract_management/how_to_submit_an
_abstract.html>
http://meetings.copernicus.org/egu2011/abstract_management/how_to_submit_an_
abstract.html
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GMPV2/IG20
Magma mixing and its role in producing compositional diversity in igneous
rocks: petrological and volcanological issues
Convener: Diego Perugini
Co-Convener: Cristina De Campos
Magma mixing is a process of undoubted importance in the Earth system.
Understanding its development, both in space and time, is crucial for
understanding its impact on the genesis of igneous rocks, both near the
Earth surface and in its deeper interior. From a petrological point of view,
investigation of the interaction between mafic and felsic magmas is often
essential for deciphering the chemical composition of the end-member primary
melts, the latter often essential for constraining tectonic settings. From a
volcanological point of view, the replenishment of a sub-volcanic magma
reservoir with less evolved magmas is considered to be one of the processes
triggering explosive eruptions.
Although increasing natural evidence indicates magma mixing as a major
petrological process in the Earth system, several questions still remain
open. Among them: which rheological conditions promote or inhibit mixing
processes? What is the spatial and temporal compositional variability of
igneous systems affected by magma mixing processes? How do geochemical
heterogeneities produced by mixing processes influence the composition and
textures of crystallizing minerals? What are the time-scales for magma
mixing and hybrid melt production? What are the time-scales of volcanic
eruptions triggered by magma mixing processes?
This session invites contributions focussed on the structural (field
relations), textural (zoning, resorption, chemical and isotopic
disequilibrium in minerals), and geochemical (major and trace elements and
isotopes) study of magma interaction processes in both plutonic and volcanic
environments. Contributions targeting the study of magma mixing by
experimental, theoretical and numerical modelling are also welcome.
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P.S.: We are sorry for multiple posting.
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