“…Palmer (1955) interpreted several low mounds on the Schofield Plateau as "small lava shields" which may have been supplied with lava from dikes striking transverse to the main Koolau rift zone. Shettigara and Peterson (1985), using one-and two-dimen- Dale and Takasaki, 1976Swartz, 1939Broadbent, 1980Shettigara, 1985Mink and Lau, 1990 TOPOGRAPHIC DIVIDE sional models to interpret their resistivity sounding and profile data, concluded that the ground-water dams were shallow dikes. The dikes making up the northern dam were estimated to be within 100 ft of the ground surface.…”