The chemical compositions of all examples of the Honolulu volcanics on land have been modified by the excessive amounts of rainwater that percolate through them.
(The chemical compositions of all examples of the Honolulu volcanics on land; have been modified; by the excessive amounts of rainwater) (the excessive amounts of rainwater; percolate; through them)
The chemical compositions of all examples of the Honolulu volcanics on land the excessive amounts of rainwater
have been modified percolate
by the excessive amounts of rainwater
through them