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SUMMARY:The metamorphic rock record: insights from eclogites - Owen Weller
 \, University of Cambridge
DTSTART:20170307T120000Z
DTEND:20170307T130000Z
UID:TALK67936@talks.cam.ac.uk
CONTACT:John Maclennan
DESCRIPTION:Due to advances in instrumentation and thermodynamic datasets\
 , metamorphic petrologists are able to quantify the pressure\, temperate a
 nd time of tectonic events with increasing precision and accuracy. Subsequ
 ent compilation of these data has led to significant progress in our under
 standing of the evolution of the lithosphere\, particularly in relation to
  Precambrian geodynamics (Brown\, 2014). In this talk I will give a brief 
 overview of the global metamorphic rock record\, followed by discussion of
  two case studies that explore eclogite-facies metamorphism in the Phanero
 zoic of Japan (Weller _et al._\, 2015) and the Proterozoic of Arctic Canad
 a (Weller & St-Onge\, 2017). Finally\, I will highlight future research di
 rections into the Archaean. The results will span\, challenge and develop 
 our understanding of the metamorphic rock record\, and highlight the usefu
 lness of phase equilibria modelling for solving geological and tectonic pr
 oblems.\n\n\nBrown\, M. (2014) The contribution of metamorphic petrology t
 o understanding lithosphere evolution and geodynamics. _Geoscience Frontie
 rs_ 5\, 553–569.\n\nWeller\, O.M.\, Wallis\, S.R.\, Aoya\, M.\, & Nagaya
 \, T. (2015) Phase equilibria modelling of blueschist and eclogite from th
 e Sanbagawa metamorphic belt of south-west Japan reveals along-strike cons
 istency in tectonothermal architecture. _Journal of Metamorphic Geology_ 3
 3\, 579–596. \n\nWeller\, O.M. & St-Onge\, M.R. (2017) Record of modern-
 style plate tectonics in the Palaeoproterozoic Trans-Hudson orogen. In pre
 ss\, _Nature Geoscience_\, doi: 10.1038/ngeo2904.\n
LOCATION:Tilley Lecture Theatre\, Department of Earth Sciences
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