Barbara Sherwood Lollar¹, Oliver Warr¹, Chris J. Ballentine², Jesse Dylan Tarnas³, John F Mustard³, Vlada Stamenkovic⁴, Grant A G Ferguson⁵, Ji-Hyun Kim⁶, Mcintosh, Jennifer C⁶ and Jeffrey McDonnell⁷, (1)University of Toronto, Department of Earth Sciences, Toronto, ON, Canada, (2)University of Oxford, Department of Earth Sciences, Oxford, United Kingdom, (3)Brown University, Department of Earth, Environmental and Planetary Sciences, Providence, RI, United States, (4)NASA Jet Propulsion Laboratory, California Institute of Technology, Pasadena, CA, United States, (5)University of Saskatchewan, Civil, Geological and Environmental Engineering, Saskatoon, SK, Canada, (6)University of Arizona, Hydrology and Atmospheric Sciences, Tucson, AZ, United States, (7)University of Saskatchewan, School of Environment and Sustainability, Global Institute for Water Security, Saskatoon, SK, Canada

Carol Finn¹, Paul Bedrosian¹, Steve Holbrook² and Esben Auken³, (1)USGS, Geology, Geophysics, and Geochemistry Science Center, Denver, CO, United States, (2)Virginia Tech, Blacksburg, VA, United States, (3)University of Aarhus, Aarhus, Denmark

Hannah Beth Riegel¹, Gabriele Casale¹, Francesco Mirabella², Lorenzo Talegalli² and Ethan G Hyland³, (1)Appalachian State University, Boone, NC, United States, (2)University of Perugia, Dipartimento di Fisica e Geologia, Perugia, Italy, (3)North Carolina State University Raleigh, Department of Marine, Earth & Atmospheric Sciences, Raleigh, NC, United States

Virginia P Edgcomb¹, David J. Beaudoin², Donna K Blackman³, Gaetan Burgaud⁴, Rebecca Cox⁵, Henry J Dick⁶, Frieder Klein⁷, Jiangtao Li⁸, Sarah Lott⁹, Paraskevi Mara², Lara A.E. Meyer¹⁰, Maxence Quemener⁴, Florence Schubotz¹⁰, Jason B Sylvan¹¹ and Shu Ying Wee¹², (1)Woods Hole Oceanographic Institution, Geology and Geophysics Department, Woods Hole, MA, United States, (2)Woods Hole Oceanographic Institution, Woods Hole, MA, United States, (3)University of California San Diego, La Jolla, CA, United States, (4)University of Brest, LUBEM (Laboratory of Biodiversity and Microbial Ecology), Plouzané, France, (5)Woods Hole Oceanographic Institution, Geology and Geophysics, Woods Hole, United States, (6)Woods Hole Oceanographic Inst, Arlington, MA, United States, (7)Woods Hole Oceanographic Inst., Woods Hole, MA, United States, (8)Tongji University, School of Ocean and Earth Science, Shanghai, China, (9)Woods Hole Oceanographic Institution, Woods Hole, United States, (10)MARUM - University of Bremen, Bremen, Germany, (11)USC-Biological Sciences, Los Angeles, CA, United States, (12)Texas A&M University College Station, Oceanography, College Station, TX, United States

Susan Q Lang, University of South Carolina Columbia, Columbia, SC, United States, Marvin Lilley, University of Washington, Seattle, United States, Tamara Baumberger, University of Bergen, Bergen, Norway, Gretchen L. Frueh-Green, ETH Zurich, Department of Earth Sciences, Zurich, Switzerland, Sharon L Walker, NOAA/PMEL, Seattle, WA, United States, William J Brazelton, University of Utah, School of Biological Sciences, Salt Lake City, UT, United States, Deborah S Kelley, University of Washington Seattle Campus, School of Oceanography, Seattle, WA, United States, Mitchell Elend, University of Washington Seattle Campus, Seattle, United States, David A Butterfield, University of Washington, NOAA/PMEL, Joint Institute for the Study of the Atmosphere and Oceans,, Seattle, WA, United States and Aaron Mau, University of South Carolina, School of the Earth, Ocean, and Environment, Columbia, SC, United States

Pierre Agrinier¹, Magali Bonifacie², Gerard Bardoux¹, Francis Lucazeau³, Thomas Giunta⁴ and Magali Ader¹, (1)Institut de Physique du Globe de Paris, Paris, France, (2)Université de Paris, Institut de Physique du Globe de Paris - OVSG, Gourbeyre, Guadeloupe, (3)Institut de Physique du Globe, Paris, France, (4)IFREMER, Plouzané, France

Rachel Utley¹, Nicholas Utting², Gareth Johnson³, Domokos Gyore⁴, Marta Zurakowska⁴, Finlay M Stuart⁴, Adrian Boyce⁴, Thomas Darrah⁵, Pauline Gulliver⁴, Kirk Osadetz⁶, Stuart Haszeldine⁷, Don Lawton⁸ and Stuart Gilfillan¹, (1)University of Edinburgh, School of GeoSciences, Edinburgh, EH9, United Kingdom, (2)Natural Resources Canada, Ottawa, Canada, (3)University of Strathclyde, Glasgow, United Kingdom, (4)Scottish Universities Environmental Research Center at the University of Glasgow, East Kilbride, United Kingdom, (5)Ohio State University Main Campus, School of Earth Sciences, Columbus, OH, United States, (6)Containment and Monitoring Institute, CMC Research Institutes Inc., Calgary, AB, Canada, (7)University of Edinburgh, Edinburgh, United Kingdom, (8)CMC Research Institutes Inc., Calgary, AB, Canada

Rebecca L L Tyne¹, Peter H Barry², Michael Lawson³, David J Byrne⁴, Oliver Warr⁵, Hao Xie⁶, Michael J Formolo⁷, John M Eiler⁸ and Chris J Ballentine¹, (1)University of Oxford, Earth Sciences, Oxford, United Kingdom, (2)Woods Hole Oceanographic Institution, Woods Hole, MA, United States, (3)ExxonMobil Houston, Houston, TX, United States, (4)CRPG Centre de Recherches Pétrographiques et Géochimiques, CNRS, Vandoeuvre-Les-Nancy, France, (5)University of Toronto, Department of Earth Sciences, Toronto, ON, Canada, (6)JPL/NASA/Caltech, Pasadena, CA, United States, (7)Exxon Mobil Upstream Research, Houston, TX, United States, (8)Caltech, Pasadena, CA, United States