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A submarine perspective of the Honolulu Volcanics, Oahu
Journal of Volcanology and Geothermal Research, 2006Lavas and volcaniclastic deposits were observed and collected from 4 submarine cones that are part of the Honolulu Volcanics on Oahu, Hawaii. The locations of these and a few additional, but unsampled, vents demonstrate that nearly all the vents are located on or very close to the shoreline of Oahu, with the most distal vent just 12 km offshore.
David A. Clague +5 more
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Factors governing the nature of submarine volcanism
Bulletin of Volcanology, 1963Examination of the volumetric expansion of vesiculating water vapor at temperatures and pressure corresponding to those of basaltic and rhyolitic magmas erupting under various depths of sea water indicates that explosive ash formation is unlikely at depths greater than 500 meters.
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Petrology and Geochemistry of Submarine Volcanism in the Sicily Channel Rift
The Journal of Geology, 2006Abstract Submarine magmatism in the Sicily Channel Rift began in the early Pliocene and lasted until almost 200 yr ago. We present here petrological and geochemical data on volcanic rocks dredged from Graham and Nameless banks and Pantelleria seamounts in the Pelagian sector of the Sicily Channel Rift.
S. g Rotolo +3 more
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Fallout of Pyroclastic Debris from Submarine Volcanic Eruptions
Science, 1991Volcanic fallout deposits on land, being widespread and accessible for study, have received much attention and have revealed a great deal about subaerial eruption mechanisms. In contrast, virtually nothing is known about equivalent deposits produced by submarine volcanoes, despite the probable abundance of such material in today's oceans and in ...
K V, Cashman, R S, Fiske
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Acoustic observations of nonexplosive submarine volcanism
Journal of Geophysical Research, 1973A seamount having a least depth of 210 meters and located northwest of Saipan in the Mariana Islands has been identified as the most probable source of the volcanic activity detected by sofar in April and May 1966. The nonexplosive character of the sofar signals is ascribed to an eruption of fluid magma that yielded continuous production of steam ...
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Geological Society of America Bulletin, 2006
Three lithostratigraphic units have been distinguished in the volcanic succession of the basal complex of Fuerteventura Island. These units are, from bottom to top: the submarine volcanic group, the transitional volcanic group, and the subaerial volcanic group. These three groups record the submarine growth and emergence of the island. The volcanism is
M. Gutierrez +7 more
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Three lithostratigraphic units have been distinguished in the volcanic succession of the basal complex of Fuerteventura Island. These units are, from bottom to top: the submarine volcanic group, the transitional volcanic group, and the subaerial volcanic group. These three groups record the submarine growth and emergence of the island. The volcanism is
M. Gutierrez +7 more
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Active Submarine Volcanism in the Austral Islands
Science, 1970An active submarine volcano has been found on a southeastward extension of the Austral Islands chain. Its last eruption, in May 1967, was detected by North Pacific hydrophones. The position computed by sofar was 32 kilometers northwest of that found in a search by echo sounder, 29°01′S, 140°17′W. The minimum depth encountered was 460 meters.
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Geologic implications of microfossils in submarine volcanics
Bulletin Volcanologique, 1971Samples of basalt and palagonite tuff-breccia dredged from the East Pacific Rise and Eickelberg Ridge in the northeast Pacific contain Foraminifera, diatoms, and other microorganisms associated with sediments. Microfossils are found in large vesicles in the interior of the rock. Palagonite tuff-breccias include sediments containing microfossils.
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Volcanic events associated with an enigmatic submarine earthquake
Geophysical Journal International, 2000Summary On 1996 September 4, a submarine earthquake occurred underneath the Smith Caldera near Tori-Shima on the Izu-Bonin arc, Japan. Its mechanism was a CLVD with the principal tensile dipole in the vertical direction. The tsunami magnitude Mt of 7.5 was significantly larger than not only the body wave magnitude, mb, of 5.6 but also the moment ...
H. Sugioka +3 more
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Morphological investigations of submarine volcanism: Henderson Seamount
Geology, 1980New, high-quality bathymetric data for Henderson Seamount (about 80 km west of the southern tip of Baja California) reveal complexities of structure that allow comparison with subaerial volcanoes. Henderson is 3.3 km high, with a basal diameter of 33 km, resembling a subaerial shield volcano in gross morphology. The summit is composed of alkali basalts.
Patrick T. Taylor +2 more
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