Anatomy of dyke intrusion at 15-18 km depth beneath Upptyppingar, north IcelandWhite, Robert S.; Drew, Julian; Martens, Hilary R.; Eilon, Z.; Soosalu, Heidi Elisabet; Key, Julian; Jakobsdottir, Steinunn S.British Geophysical Association New Advances in Geophysics Meeting "Magma Emplacement and Storage in the Earth's Crust", London, 11-12 February 20102010 Seismicity beneath the Askja volcanic system, central Iceland, indicating multiple centres of melt injection from the mantle in a single spreading segmentKey, Julian; Soosalu, Heidi Elisabet; White, Robert S.British Geophysical Association New Advances in Geophysics Meeting "Magma Emplacement and Storage in the Earth's Crust", London, 11-12 February 20102010