The turbidity currents probably started near land.
Marine biologists call this the zone of maximum turbidity -- literally, where the water becomes cloudy from mixing.
Heezen also studied the role of turbidity currents (underwater rivers of mud) in shaping the contours of the sea floor, and theorized that glassy particles called tektites in the .
Dr John Blatherwick in National Post We'll make the decision based on those factors the turbidity coming down, and the bacteriological counts,Blatherwick said.