How do sedimentary rocks form on the Hawaiian Islands?

I think they form on the Hawaiian islands because of the volcano.

Explanation: The heat may help them form,hope this helps.

oh it is true if thats what you are asking

the mantle

explanation:

earth is divided into three layers: the crust or the outermost layer on which we live; the underlying, middle layer - the mantle - and the core (the innermost layer of earth).