358 
PACIFIC SCIENCE, Voi XIX, July 1965 
the seat of Kauai volcanism than is present be- 
neath the other volcanoes. 
Geologic intuition leads to the conclusion 
that the Hawaiian Chain is growing toward 
the southeast. Younger islands such as Hawaii 
and Maui are thought to be undercompensated. 
Conversely, older islands might be expected to 
be in better adjustment. Were all other factors 
equivalent, this would yield lower Bouguer val- 
ues on Kauai — actually the reverse of our find- 
ings. 
No one has suggested that some of the older 
islands might be emerging due to erosional 
stripping. This would involve the mechanism 
of crustal thinning and would explain an in- 
creased Bouguer field. 
As another alternative, it is conceivable that 
Kauai (as are the other islands) is still under- 
compensated, but that it erupted and grew on 
the ocean floor in a region of inherently thinner 
crust. 
REFERENCES 
Goguel, Jean. 1962. Tidal gravity corrections 
for 1963. Geoph. Prosp., Vol. 10, Suppl. 1, 
Dec. 1962. 
Hawaii Institute of Geophysics. 1965. 
Data from gravity surveys over the Hawaiian 
Archipelago and other Pacific Islands. Ha- 
waii Inst. Geoph. Rept. 65-4, March 1965. 
10 tables. 
Kinoshita, W. T., H. L. Krivoy, D. R. 
Mabey, and R. R. MacDonald. 1963. Grav- 
ity survey of the island of Hawaii. U. S. Geol. 
Survey Prof. Paper 475-0014-016. 
Krivoy, H. L., and J. P. Eaton. 1961. Prelim- 
inary gravity survey of Kilauea volcano, Ha- 
waii. U. S. Geol. Survey Prof. Paper 424-D: 
D205-D208. 
Macdonald, G. A., D. A. Davis, and D. C. 
Cox. I960. Geology and ground- water re- 
sources of the island of Kauai, Hawaii. Ha- 
waii Div. Hydrography Bull. 13, 212 pp. 
Stearns, H. T. 1946. Geology and ground- 
water resources of Lanai and Kahoolawe, 
Hawaii. Hawaii Div. Hydrography Bull. 8, 
Tyypp. 
Woollard, G. P. 1951. A gravity reconnais- 
sance of the Island of Oahu. Am. Geoph. 
Union Trans. 32(3) : 358-368. 
— and W. E. Strange. 1962. Gravity 
anomalies and the crust of the earth in the 
Pacific Basin. In: The crust of the Pacific 
Basin. Am. Geoph. Union Geoph. Monogr. 
6, pp. 60-80. 
