David J. W. Piper has worked in recent years for the GSC on marine geohazards and petroleum basins on the eastern and Arctic Canadian continental margins. He started his career as a Lower Paleozoic sedimentologist and is known for contributions using modern marine analogues to interpret ancient deep-water sedimentary successions, notably turbidites and mass-transport deposits. He has worked for many years on the geology of Greece. He was for 16 years co-Editor in Chief of the journal Marine Geology.