The Quaternary geology of the Labrador Shelf

摘要: The regional distribution of glacial and postglacial sediments on the Labrador Shelf was mapped by medium- high-resolution seismics shows a succession tills that extend to continental shelf edge at approximately 600 m. uppermost these is less laterally extensive does not occur bank tops in water depths than 160 m. We infer last episode preceding ones. Glaciomarine stratified silts muds are found overlying upper till deep basins separate banks. till, glaciomarine silts, interpreted constitute one complete deglacial cycle. Radiocarbon age determination suggests this sequence began 20 000 years BP. On northernmost Hudson Strait, seismic evidence indicates late readvance locally deposited overlies associated with advance...