Hess Deep Plutonic Crust
Scientists sampled, for the first time, primitive magmatic rocks of the lower crust in the oceanic Pacific in order to understand the manufacturing process of the oceanic crust at a fast-spreading rift.
Atlantis Massif
Expedition 340T measured rock properties, how they varied with depth, and whether adjacent seawater temperatures changed. These data tested hypotheses about how crust forms and evolves at the slow-spreading Mid-Atlantic Ridge.
Costa Rica Seismogenesis Project
Scientists focused on the boundary conditions of lithology, fluid flow, and thermal structure that trigger unstable slip in the seismogenic zone to better understand the processes that control large earthquakes at these sites.
Superfast Spreading Rate Crust 4
Scientists drilled a deep hole into intact oceanic basement to understand the formation of oceanic crust and the magmatic rocks of the lower crust.