James D Muirhead¹, Tobias P Fischer², Amani Laizer³, Amdemichael Zafu⁴, Hyunwoo Lee⁵, Sarah Jaye C Oliva⁶, Raphael Pik⁷, Bernard Marty⁸, Emily Joan Judd⁹, Emmanuel Kazimoto³, Michael Ward Broadley⁸, Antonio Caracausi¹⁰, Yuji Sano¹¹, Naoto Takahata¹², Dereje Ayalew¹³, Cynthia J Ebinger⁶, Gladys Kianji¹⁴, Christel Tiberi¹⁵, Jolante van Wijk¹⁶, Josef Dufek¹⁷, Stephen F Foley¹⁸ and Claire A Currie¹⁹, (1)University of Auckland, Auckland, New Zealand, (2)University of New Mexico, Department of Earth and Planetary Sciences, Albuquerque, NM, United States, (3)University of Dar es Salaam, Dar es Salaam, Tanzania, (4)Addis Ababa University, Addis Ababa, Ethiopia, (5)Seoul National University, Seoul, South Korea, (6)Tulane University of Louisiana, New Orleans, LA, United States, (7)CRPG, Vandoeuvre-lès-Nancy, France, (8)CRPG Centre de Recherches Pétrographiques et Géochimiques, Vandoeuvre-Les-Nancy, France, (9)Syracuse University, Earth Sciences, Syracuse, NY, United States, (10)Istituto Nazionale di Geofisica e Vulcanologia, Palermo, Italy, (11)University of Tokyo, AORI, Bunkyo-ku, Japan, (12)University of Tokyo, AORI, Kashiwa, Japan, (13)Addis Ababa University, School of Earth Sciences, Addis Ababa, Ethiopia, (14)University of Nairobi, Nairobi, Kenya, (15)Universite Montpellier 2, Montpellier, France, (16)New Mexico Institute of Mining and Technology, Earth and Environmental Science, Socorro, NM, United States, (17)University of Oregon, Eugene, OR, United States, (18)Macquarie University, Department of Earth and Planetary Sciences, Sydney, NSW, Australia, (19)University of Alberta, Department of Physics, Edmonton, AB, Canada