[1] Deep Carbon Observ, Geophys Lab, Washington, DC 20015 USA
[2] Univ Calif San Diego, IGPP, Scripps Inst Oceanog, La Jolla, CA 92093 USA
[3] Univ Montpellier 2, CNRS, Geosci Montpellier, F-34095 Montpellier 05, France
[4] Consortium Ocean Leadership, Engn & Technol, Dept Ocean Drilling, Washington, DC 20005 USA
[5] Cornell Univ, Earth & Atmospher Sci, Ithaca, NY 14853 USA
[6] East Carolina Univ, Dept Biol, Greenville, NC 27858 USA
[7] Tokyo Univ Marine Sci & Technol, IODP MI, Koto Ku, Off Liaison & Cooperat Res 3rd Floor, Tokyo 1358533, Japan
[8] Japan Agcy Marine Earth Sci & Technol, Inst Res Earth Evolut IFREE, Yokosuka, Kanagawa 2370061, Japan
[9] Stanford Univ, Sch Earth Sci, Dept Geol & Environm Sci, Stanford, CA 94305 USA