Hotspot Rift Interaction & Geochemistry of the North Atlantic Mantle: the Aegir Ridge 'Hole' in the Iceland Hotspot, 2014 ...
Surrounded by extensive breakup volcanism on the margins, and the Iceland-Faeroes volcanic ridge, the magma-starved basin formed by the extinct Aegir Ridge is a major gap in the North Atlantic large igneous province, the latter created by the Iceland hotspot. Wide-angle seismic data show that the Ae...
Main Author: | |
---|---|
Format: | Dataset |
Language: | unknown |
Published: |
Sikt - Norwegian Agency for Shared Services in Education and Research
2024
|
Subjects: | |
Online Access: | https://dx.doi.org/10.18712/nsd-nsd2151-v2 https://surveybanken.sikt.no/study/NSD2151/2 |
Summary: | Surrounded by extensive breakup volcanism on the margins, and the Iceland-Faeroes volcanic ridge, the magma-starved basin formed by the extinct Aegir Ridge is a major gap in the North Atlantic large igneous province, the latter created by the Iceland hotspot. Wide-angle seismic data show that the Aegir Ridge began creating moderately thick crust (8-11 km) the first 2-4 Myr spreading; but magma production quickly waned to form 3.5-6 km thick crust for the remaining spreading (51.4-25 Ma). This weak or non-existent hotspot influence despite extensive volcanism nearby provides a unique opportunity to learn about the dynamics of hotspot-rift interaction. ... |
---|