The Ronda peridotite (Betic Cordillera, Southern Spain) is the largest alpine-type massif worldwide. Yet, emplacement mechanism of these mantle rocks still a highly debated topic. In this study, we aim at better constraining their context exhumation by focusing on Nieves Unit, which mostly composed Mesozoic metasediments displaying HT metamorphism and deformation along contact with peridotite. ...

The Dinaride Ophiolite Belt formed from the Jurassic part of Neotethys. investigated Ozren ophiolite complex in Bosnia and Herzegovina consists peridotites, plagioclase plagiogranites, troctolites other gabbroic rocks, fewer basalts. Lherzolites harzburgites contain corroded ortho- clinopyroxene1 porphyroclasts enclosed olivine matrix. boundaries between aggregates pyroxene1 spinel1 are infille...

Abstract New zircon U-Pb geochronology from a peridotite suite near Ranau and the Telupid ophiolite in Sabah, eastern Malaysia, contradict previous studies, which assumed that Sabah mafic-ultramafic rocks are largely ophiolitic Jurassic–Cretaceous age. We show these formed during magmatic episode Miocene (9.2–10.5 Ma), is interpreted to reflect infiltration of melts melt-rock reaction subcontin...

The carbon geochemistry of serpentinized peridotites and gabbroic rocks recovered during IODP Expedition 357 on the Atlantis Massif (AM) was examined to characterize sources fate dissolved organic (DOC) inorganic (DIC) in seawater long-lived hydrothermal circulation serpentinization. Carbon isotopes reveal three stages carbonate formation, starting at least 38,000 yr ago: (a) Early dispersed pr...

Flow induced mineral alignment in the Earth s mantle affects the nature of seismic wave propagation. Since measurements of seismic travel-time and shear wave splitting are a key means by which the structure of the upper mantle can be imaged, it is important to understand the factors that contribute to variability in elastic properties. Seismic anisotropy associated with lattice preferred orient...