Abstract. The northeast Atlantic encompasses archetypal examples of
volcanic rifted margins. Twenty-five years after the last ODP (Ocean Drilling Program) leg on these
volcanic margins, the reasons for excess melting are still disputed with at
least three competing hypotheses being discussed. We are proposing a new
drilling campaign that will constrain the timing, rates of volcanism,
and vertical movements of rifted margins. This will allow us to parameterise
geodynamic models that can distinguish between the hypotheses. Furthermore,
the drilling-derived data will help us to understand the role of breakup
magmatism as a potential driver for the Palaeocene–Eocene thermal maximum
(PETM) and its influence on the oceanographic circulation in the earliest
phase of the northeast Atlantic Ocean formation. Tackling these questions
with a new drilling campaign in the northeast Atlantic region will advance
our understanding of the long-term interactions between tectonics,
volcanism, oceanography, and climate and the functioning of subpolar
northern ecosystems and climate during intervals of extreme warmth.
The role of structural inheritance in the development of high-displacement crustal faults in the necking domain of rifted margins: The Klakk Fault Complex, Frøya High, offshore mid-Norway
