1. An upper mantle seismic discontinuity beneath the Galápagos Archipelago and its implications for studies of the lithosphere‐asthenosphere boundary Byrnes, Joseph S.; Hooft, Emilie E. E.; Toomey, Douglas R.; Villagómez, Darwin R.; Geist, Dennis J.; Solomon, Sean C. 2015 Articles SeismologyGeophysicsMantle plumes