Seismic Stratigraphic Framework – Eastern Scotian Shelf and Slope

Seismic Stratigraphic Framework – Eastern Scotian Shelf and Slope

Regional seismic horizons were correlated across the shelf and slope of the study area and were used to separate the stratigraphic succession into seven mega-sequences. The boundaries between these mega-sequences mark distinct phases in the seismic-stratigraphic evolution of the slope. Following a description of the basement architecture, we describe each mega-sequence (MS), including bounding horizon characteristics, sediment thickness distribution, seismic facies character, distribution and style of structures (including evidence for salt movement), and where possible the interpreted linkage to shelf depositional systems, including the location of shelf-edge trajectories. Except for MS-6, which encompasses about 60 Ma, most of the mega-sequences are believed to range from 10 to 35 Ma in duration, though there is considerable uncertainty about the age of strata in MS-1 and MS-2.