Seismic stratigraphy and late Quaternary sedimentary history of Bonavista Bay, northeastern Newfoundland

The Late Quaternary glacial and sedimentary history of Bonavista Bay, on the NE coast of Newfoundland, is interpreted from 545 line km of high-resolution seismic reflection data and three piston cores. Seismic data from the open, outer region of Bonavista Bay display three seismic units (1-3) overlying acoustic basement within two broad, shallow basins. The surveyed inner region of Bonavista Bay contains narrow, deep basins which commonly host four seismic units (A-D) above acoustic basement. -- Glacial sediments are represented by seismic units 1 and A, both of which are acoustically incoherent. Unit 1 is generally <15 ms thick and has a variable morphology. It is correlated with a stiff, sandy, gravelly mud (diamicton). Unit A is up to 110 ms thick and ponded. Units 2, B and C are proglacial sequences. Unit 2 is acoustically stratified,