Geochemistry, provenance, and metamorphic evolution of Gabal Samra Neoproterozoic metapelites, Sinai, Egypt

► Lower-sillimanite isograde, upper amphibolite facies metapelites. ► Immature Fe-shale protoliths, from dominantly intermediate composition. ► Clockwise P-T path; isothermal decompression followed by isobaric cooling. ► Isothermal exhumation, enhanced by heat flux from an active magmatic arc.