What setting has the thinnest cover of sediment in the oceans?

Question

Quizplus · Accepted Answer

Mid-ocean ridges have the thinnest cover of sediment in the oceans because they are constantly being created by volcanic activity, and the new rock that is formed has not had much time to accumulate sediment. In contrast, abyssal plains, oceanic trenches, and continental shelves and slopes along passive margins have had more time to accumulate sediment, resulting in a thicker cover.

What Setting Has the Thinnest Cover of Sediment in the Oceans