HALIP, first recognized by Tarduno in 1998 on the basis of work in the Axel Heiberg area, has a large footprint. Components include abundant mafic flows and intrusions in Franz Josef Land and the Canadian Arctic area, widespread mafic sill intrusions in Svalbard with some flows to the east, and possibly an extensive dike suite on North Greenland. The core is the Alpha Ridge in the Amerasian basin. The Iceland hotspot has been tracked back to this area, and the mafic but anomalously thick Alpha Ridge is considered either an oceanic plateau or plume influenced spreading ridge. Note than in closing the Tertiary Eurasian basin Northern Svalbard and Franz Josef Land snuggle closer to the Alpha Ridge with the Lomonosov Ridge inbetween. We are focusing on the Svalbard area.

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