IAVCEI 2023 session: Understanding and utilising melt inclusions to elucidate magmatic systems

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From: Zoltan Taracsak <zoltan.taracsak@xxxxxxxxxxxxxx>


Dear All,



Please find details below of a melt inclusion focussed IAVCEI 2023 session
that may be of interest.


*IAVCEI 2023 session: Understanding and utilising melt inclusions to
elucidate magmatic systems*



Kia ora everyone,



Weâ??d like to highlight following sessing at IAVCEI 2023: Understanding and
utilising melt inclusions to elucidate magmatic systems (see description
below) in the Using field data, geophysics, geochemistry, statistics, and
modelling to probe volcanic and plutonic systems symposia.



Abstract deadline is 2nd September 2022 (Aotearoa New Zealand timeâ?¦ so best
to submit the day before just in case!) -
https://urldefense.com/v3/__https://confer.eventsair.com/iavcei2023/call-for-abstracts__;!!IKRxdwAv5BmarQ!dlr3xSn55YEjjqSJxmoKI5X_m1325nYUdfuRpxCdu5mzsbPz1wvFyevuyJVpdyXaTr1wmz_qsANq5I_u$ 
<https://urldefense.com/v3/__https://confer.eventsair.com/iavcei2023/call-for-abstracts__;!!IKRxdwAv5BmarQ!d-kTeoyWllk0Zddv49lnBamEYxtvMfZKKQx7exjqmhRJuH1F2IDxJC9oMpS3tCcTL8QMqls5EAdtxwyjiO-cQ2eniDBdsjX63PBy$>



NgÄ? mihi,

Ery Hughes, Anna Barth, Alex Iveson, Damaris Butters, and Zoltán Taracsák



*Understanding and utilising melt inclusions to elucidate magmatic systems*

Melt inclusions (MIs) are small pockets of typically silicate melt, which
become trapped inside crystals as they grow from a magma, providing a
unique sample of the melt from the magmatic system. Suites of MIs are often
used to reconstruct the volatile budget and degassing history of volcanic
eruptions, as the mineral host acts as a pressure vessel, theoretically
preventing post-entrapment modification of the volatiles. MIs can also be
used to understand the conditions of ore deposit formation in plutonic
systems, where the rocks are otherwise often highly altered at the surface.
MIs can be difficult to analyse due to their small size, multi-phase
componentry, and beam sensitive nature. Despite these challenges, there are
a wide variety of existing and developing experimental and microanalytical
techniques to quantify their compositions (element concentrations, isotope
ratios, speciation/oxidation states, including diffusion profiles) and
structure (size/type of phases). These data provide invaluable information
on the changes in composition prior to eruption during magmatic processes
when combined with experimental petrology and computer modelling.
Unfortunately, it is becoming increasingly evident that various
post-entrapment processes (e.g., crystallisation, bubble formation, and
diffusion) change the composition and structure of MIs, which requires new
methods for MI treatment and data collection/reduction. This session aims
to bring together topics relating to the utility of MIs in elucidating the
magmatic processes occurring prior to eruption and in relation to ore
deposit formation. These include experimental studies on volatile and melt
evolution prior to eruption, post-entrapment effects and how to reconstruct
MI composition/structure, as well as new analytical techniques. We also
welcome studies of natural MIs (especially those including complementary
datasets, e.g., geophysical, experimental, diffusion chronometry, etc.) to
understand plutonic and volcanic systems, from the generation of ore
deposits to understanding eruption triggers and, more generally, the
architecture of magmatic plumbing systems.




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