These deposits form a caprock that confines water in the Koolau Basalt inland and in the coastal plains.
(These deposits; form; a caprock that confines water in the Koolau Basalt inland and in the coastal plains) (a caprock; confines; water in the Koolau Basalt inland and in the coastal plains)
These deposits a caprock
form confines
a caprock that confines water in the Koolau Basalt inland and in the coastal plains
water in the Koolau Basalt inland and in the coastal plains