International Journal of Earth Sciences International Journal of Earth Sciences, Springer Verlag, 2020, 109 (4), pp.1273-1294. ⟨10.1007/s00531-020-01848-2⟩ International Journal of Earth Sciences, 2020, 109 (4), pp.1273-1294. ⟨10.1007/s00531-020-01848-2⟩