What Sediment Type Is The Rarest Found In The Ocean?

What Sediment Type Is The Rarest Found In The Ocean? Siliceous ooze is a type of biogenic pelagic sediment located on the deep ocean floor. Siliceous oozes are the least common of the deep sea sediments, and make up approximately 15% of the ocean floor. Oozes are defined as sediments which contain at least 30%