Caroline Seyler¹, James D Kirkpatrick¹, Heather M Savage², Takehiro Hirose³ and Dan Faulkner⁴, (1)McGill University, Earth & Planetary Sciences, Montreal, QC, Canada, (2)University of California Santa Cruz, Santa Cruz, CA, United States, (3)JAMSTEC, Kochi Institute for Core Sample Research, Nankoku, Japan, (4)University of Liverpool, Liverpool, L69, United Kingdom