Geologic Implications of Magnetic Surveys — Malahoff and Woollard 
291 
Fig. 15. Bouguer anomaly map of the Kilauea area on the island of Hawaii, p =. 2.3 gm/cc. Contour 
interval at 10 mgals. (After Kinoshita et al., 1963.) 
17 and 18) probably marks an inactive center 
of volcanism containing more magnetic rocks 
than the surrounding basalts but having the 
same density as the surrounding basalts. The 
top of this center appears to be buried now at 
a depth of 0.95 km below sea level beneath the 
lava flows of Kilauea. 
Also, the top of the Kohala volcanic vent 
appears to be located at a depth of 2.65 km 
beneath sea level. 
The remaining major magnetic anomalies 
representing the vents for Mauna Loa, Maun a 
Kea, and Hualalai volcanoes occur at depths 
located above sea level. The Mauna Loa vent 
appears to originate from a depth of 1.9 km 
above sea level, and the Mauna Kea vent appears 
to originate from a depth of 2.7 km above sea 
level. The Hualalai vent has a depth of 1.75 
km above sea level. It is difficult to judge the 
overall accuracy of the depth estimation 
Fig. 16. Map of the geology of Kilauea Volcano, island of Hawaii. 
