Detall

Conferència "Lithosphere Evolution, Geodynamics and Metallogeny"

Notícia | 15-06-2009

A càrrec de Dr. G. Begg (Director, Minerals Targeting International; Society of Economic Geologists International Exchange Lecturer 2009)
SEMINARIS DE LA FACULTAT DE GEOLOGIA I L'INSTITUT DE CIÈNCIES DE LA TERRA JAUME ALMERA

Universitat de Barcelona (UB)
Consell Superior d'Investigacions Científiques (CSIC)

Dia: Dilluns 15 de Juny
Hora: 12.00 h
Lloc: Sala d'actes de l'Institut Jaume Almera

Resum:
Integration of geophysical, geological, and geochemical data on the crust and lithospheric mantle has generated a map of lithospheric composition and architecture that suggests at least 60% of sub-continental lithospheric mantle (SCLM) may have an Archean parentage. Of particular significance is the inference that most preserved Proterozoic crust overlies Archean SCLM that has been variably refertilised and metasomatised by mantle melts associated with convergent margin, post-collisional, and mantle plume processes. These interpretations suggest that consideration of lithospheric preservation and recycling is crucial to understanding Earth evolution.


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