Tectonics controls the nature of oceanic crust and melt production at magma-poor ultraslow ridges.

Leila Mezri, MARUM - Center for Marin Environmental Sciences, Bremen, Germany, Javier Garcia-Pintado, MARUM - University of Bremen, Bremen, Germany, Marta Perez-Gussinye, MARUM– Center for Marine Environmental Sciences, Bremen, Germany, Zhonglan Liu, Key Laboratory of Orogenic Belts and Crustal Evolution, School of Earth and Space Sciences, Peking University, Beijing, China and Wolfgang Bach, University of Bremen, Faculty of Geosciences, Bremen, Germany