The oceanic lithosphere is typically coated in a layer of sediment.Which of the following is NOT true about this sediment?
A)Some of the sediment may be scraped off at subduction zones by the overriding plate forming an accretionary prism.
B)All of the sediment is eventually subducted along with the lithosphere into the mantle.
C)The layer of sediment is generally thicker on older oceanic lithosphere.
D)The layer of sediment is generally very thin or nonexistent at mid-ocean ridges.

Question

Quizplus · Accepted Answer

While some sediment may be subducted along with the oceanic lithosphere, not all of it is subducted. Some sediment can be scraped off at subduction zones and form an accretionary prism. Additionally, sediment thickness varies depending on the age of the lithosphere, and it is generally thin or nonexistent at mid-ocean ridges.

The Oceanic Lithosphere Is Typically Coated in a Layer of Sediment.Which