What Petit-Spot Volcanoes Tell us about the Lithosphere-Asthenosphere Boundary?

Sebastien Pilet1, Natsue Abe2, Laetitia Rochat3, Mary-Alix Kaczmarek4, Annelore Bessat3, Thibault Duretz1 and Othmar Muntener5, (1)University of Lausanne, Institute of Earth Sciences, Lausanne, Switzerland, (2)Japan Agency for Marine-Earth Science and Technology (JAMSTEC), Mantle Drilling Promotion Office, MarE3, Yokohama, Japan, (3)University of Lausanne, Lausanne, Switzerland, (4)GET Géosciences Environnement Toulouse, Toulouse, France, (5)University of Lausanne, Institute of mineralogy and geochemistry, Lausanne, Switzerland