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A Seismic Refraction Study of the Koolau Volcanic Plug
|Title:||A Seismic Refraction Study of the Koolau Volcanic Plug|
|Authors:||Adams, William Mansfield|
Furumoto, Augustine S.
|Date Issued:||Jul 1965|
|Publisher:||University of Hawai'i Press|
|Citation:||Adams WM, Furumoto AS. 1965. A seismic refraction study of the Koolau volcanic plug. Pac Sci 19(3): 296-305.|
|Abstract:||The seismic data from the GASHOUSE line suppOrt the gravity and
magnetic data as indicating a plutonic body occurring beneath the center of the
Koolau caldera in the vicinity of Kailua, Oahu. This plug has a velo city greater
than 7 krn/sec and adjoins material with a velocity of about 4.6 km / sec at the top
and to the southeast. The width of the plug is estimated to be about 6 km down
to 3-4 km. Reflections from a horizon greater than 3 km deep may indicate an
und erlying magma chamber. The top of the plug is about 1600 m deep.
Drilling of this plug would have considerable scientific value both geologically
and geophysically. An appropriate drilling site would be at the southwest
corner of Kaelepulu Pond, which "lies close to the center of the plug as now defined
geophysically. Seismic reflection work directly above the dome is also recommended
to test the present estimate of the depth based on refraction results .
|Appears in Collections:||
Pacific Science Volume 19, Number 3, 1965|
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