T11-S1. The upper mantle from a petrological point of view: where we come from and where we are going

Costanza Bonadiman (bdc@unife.it)
Michel Grégoire (Michel.gregoire@get.omp.eu)
Magdalena Matusiak-Malek (magdalena.matusiak-malek@uwr.edu.pl)

The nature and evolution of the Earth’s lithospheric mantle is largely constrained from the studies of natural findings such as xenoliths, orogenic peridotite massifs, ophiolites and mantle-derived melts. Partial melting, recycling of volatile and crust, and melts migration, significantly modify the upper mantle from early to modern Earth. Deciphering the interaction of lithosphere with asthenosphere and deeper mantle is critical to understanding the Earth secular evolution and to reconcile geochemical models with natural findings. These various pieces of information, when assembled together and coupled with experiments and geophysical data, allow to better understand, scales and amplitudes of lithospheric heterogeneities as well as their dynamic role. The session’s focus primarily lies on mineralogical, petrological and geochemical studies but experimental and numerical modelling are the essential research corollary. Multidisciplinary contributions are strongly encouraged.