Widespread hydrothermal ash deposits in sediment cores from Axial Seamount, Juan de Fuca Ridge record deep-marine caldera formation 1300-800 yr BP

Ryan A Portner, Brown University, Providence, RI, United States, Brian M Dreyer, University of California Santa Cruz, Santa Cruz, CA, United States and David A Clague, Monterey Bay Aquarium Research Institute, Moss Landing, CA, United States