3He evidence for fluid transfer and continental hydration above a flat slab

• Mantle helium in Peruvian springs evidence for slab-to-lithosphere fluid transfer. • Flat slabs lead to hydration and metasomatism in overlying continental lithosphere. • Helium isotope ratios inform of fluid transit times through the crust. • Crustal structures and slab morphology influence flow...
Ausführliche Beschreibung

• Mantle helium in Peruvian springs evidence for slab-to-lithosphere fluid transfer. • Flat slabs lead to hydration and metasomatism in overlying continental lithosphere. • Helium isotope ratios inform of fluid transit times through the crust. • Crustal structures and slab morphology influence flow rates through the crust. • Dehydration and/or melting of lithospheric mantle below northern Altiplano Plateau. Ausführliche Beschreibung