Collecting a piston core of seafloor sediment off British Columbia
Collecting a piston core of seafloor sediment off British ColumbiaScientists prepare to lower a piston corer off Haida Gwaii, British Columbia, to sample seafloor sediment near the Queen Charlotte-Fairweather fault. Expedition scientists are studying layers of sediment in the cores they collected to identify and determine ages of past earthquakes along the fault.