Karen G Lloyd¹, Katherine M Fullerton², Matthew O Schrenk³, Mustafa Yucel⁴, Heather Miller⁵, Maarten J de Moor⁶, Peter H Barry¹ and Donato Giovannelli⁷, (1)University of Tennessee, Knoxville, TN, United States, (2)University of Tennessee, Microbiology, Knoxville, TN, United States, (3)Michigan State University, Department of Earth and Environmental Sciences, East Lansing, MI, United States, (4)GEOMAR, Kiel, Germany, (5)Michigan State University, East Lansing, MI, United States, (6)Observatorio Vulcanológico y Sismológico de Costa Rica, Heredia, Costa Rica, (7)University of Naples "Federico II", Naples, Italy