These rocks represent sediments deposited by ancient deltas and river systems along the margin of a sea.
(These rocks; represent; sediments deposited by ancient deltas and river systems along the margin of a sea) (sediments; deposited; by ancient deltas and river systems along the margin of a sea)
These rocks sediments
represent deposited
sediments deposited by ancient deltas and river systems along the margin of a sea
by ancient deltas and river systems along the margin of a sea