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4-D ADAMELLO: an integrated approach to understand crustal growth processes from a geodynamical, petrological and isotope geochemical perspective
English title
4-D ADAMELLO: an integrated approach to understand crustal growth processes from a geodynamical, petrological and isotope geochemical perspective
Applicant
Müntener Othmar
Number
123074
Funding scheme
ProDoc
Research institution
Institut de Minéralogie et Géochimie Université de Lausanne
Institution of higher education
University of Lausanne - LA
Main discipline
Geochemistry
Start/End
01.04.2009 - 31.05.2013
Approved amount
426'027.00
Show all
All Disciplines (4)
Discipline
Geochemistry
Geophysics
Geochronology
Other disciplines of Earth Sciences
Keywords (10)
igneous petrology; crustal growth; computational geodynamics; metamorphic petrology; geochemistry; batholith formation; magma dynamics; isotope geochemistry; high precision dating; Adamello
Lay Summary (English)
Lead
Lay summary
This ProDoc project is for a multi-year, interdisciplinary study of the Tertiary Adamello batholith in the southern Alps. Detailed studies on exposed batholiths can provide a crucial link between geophysical observations, geochemical studies in active arcs and processes in magma chambers of active volcanoes. We will address key questions such as: what is the rate and mechanism of batholith growth at convergent plate boundaries ? What are the processes that allow magmas to segregate from its source and migrate upwards ? What are the required rheological boundary conditions for successful models of batholith emplacement in the upper crust ? How is the regional deformation regime controlled by the emplacement of mafic to silicic magmas and how do internal and external stress fields interact in space and time ?Our research goals are to (1) conduct detailed investigations on mafic to intermediate plutonic rocks to determine the 3-dimensional arrangement of fractionation levels in the crust; (2) to accurately determine the emplacement of single magma batches, identify and date accessory phases and thereby better constrain how much of the magmas are crystallizing during decompression and how much might crystallize in-situ; (3) conduct major, trace and isotopic analysis, to delineate how many different liquid lines of descent are represented in the Adamello batholith, which are the volumetrically most important ones, and which can be related to, or are similar to syn- to post-plutonic dike generations; (4) make systematic determinations of T-P-X in contact metamorphic silicic rocks to ultimately quantify the contact aureole in 3-D and use these data as input data for high resolution thermomechanical modelling of the Adamello plutonic rocks; (5) to use the 3-dimensional dataset as initial and boundary conditions for creating detailed high-resolution 3D numerical models, and to provide constraints on the density and viscosity structure of the middle and lower crust during and after cessation of arc magmatism; and (6) to provide boundary conditions to understand subvolcanic magma chambersOur teaching goals are (1) to establish a new program for the formation of PhD students by combining present expertise in solid Earth Science in Switzerland into a single doctoral school aiming at formally integrate inter-disciplinary approaches to Earth sciences at the highest level of education and research. Thereby a significantly larger return on the investment is expected than from the sum of individual projects.
Direct link to Lay Summary
Last update: 21.02.2013
Responsible applicant and co-applicants
Name
Institute
Müntener Othmar
Institut des sciences de la Terre Université de Lausanne
Brack Peter
Institut für Geochemie und Petrologie ETH Zürich
Gerya Taras
Institut für Geophysik ETH Zürich
Schaltegger Urs
Département des sciences de la Terre Université de Genève
Baumgartner Lukas P.
Institut des sciences de la Terre Université de Lausanne
Ulmer Peter
Institut für Geochemie und Petrologie ETH Zürich
Employees
Name
Institute
Hürlimann Niklaus
Publications
Publication
Crustal growth at active continental margins: Numerical modeling
Vogt K. Gerya T.V Castro A. (2012), Crustal growth at active continental margins: Numerical modeling, in
Physics of the Earth and Planetary Interiors
, 192(2), 1-20.
Formation of garnet clusters during polyphase metamorphism
Floess Davis, Baumgartner Lukas, Formation of garnet clusters during polyphase metamorphism, in
Terra Nova
, 25, 144-150.
Fractional crystallization of primitive, hydrous arc magmas: an experimental study at 0.7 GPa,
Nandedkar Rohit, Fractional crystallization of primitive, hydrous arc magmas: an experimental study at 0.7 GPa,, in
Contrib Min Pet
.
Scientific events
Self-organised
Title
Date
Place
The 4-D Adamello conference, Bagolino 2012
04.09.2012
Bagolino, Italy
European Union of Geosciences, Vienna 2012
23.04.2012
Vienna (Austria), Austria
American Geophysical Union, Fall Meeting 2011
05.12.2011
San Francisco, USA, United States of America
Swiss Geoscience Meeting 2011
26.11.2011
Zürich, Switzerland
Communication with the public
Communication
Title
Media
Place
Year
Media relations: print media, online media
La relève académique, un enjeu prioritaire
l'uniscope, n 568, p 18-19
Western Switzerland
2011
Awards
Title
Year
Keller T., Winner of the best Geophysical Journal International student paper award 2013
2013
Arne Richter Award for Outstanding Young Scientists 2011, awarded to Prof. Boris Kaus, which also mentions magma migration modelling in the award description (http://www.egu.eu/awards-medals/award/arne-richter/2011/boris-jp-kaus.html)
2011
-