Mid-ocean ridge serpentinite in the Puerto Rico Trench: Accretion, alteration, and subduction of Cretaceous seafloor in the Atlantic Ocean

Frieder Klein1, Horst Marschall2, Samuel A Bowring3 and Greg Horning2, (1)Woods Hole Oceanographic Institution, Marine Chemistry and Geochemistry, Woods Hole, United States, (2)Woods Hole Oceanographic Institution, Woods Hole, MA, United States, (3)Massachusetts Institute of Technology, Cambridge, MA, United States