Abstract
Buried, mounded and acoustically transparent sediment bodies banked up against a basement ridge at the eastern end of the Charlie Gibbs Fracture Zone are interpreted as a type of contourite drift. As they are probably of Eocene—?Palaeocene age, their origin has implications for the little-known deep circulation pattern in the NE Atlantic during this period. Possible sources for the bottom currents responsible for these drifts include Labrador Sea Water, Norwegian Sea Overflow Water, Antarctic Bottom Water or a Gulf Stream deep gyre system. The preferred source is an early development of Antarctic Bottom Water or an arm of a Gulf Stream Gyre flowing eastwards through the fracture zone.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have