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Data from the Global Volcanism Program of the Smithsonian Institution
Details for: Healy
A bathymetric map of Healy submarine volcano is overlain by dive tracks of the submersible vehicle Pisces V. Dive depths range from 1,120 to 1,490 m. The resolution of the bathymetry data is 25 m, and the contour interval is 20 m. Roughly 600-year-old pumice deposits found on the shores of North Island, New Zealand, originated from Healy. The bathymetry data were obtained during a 2005 New Zealand-American NOAA Ocean Explorer research expedition to the Kermadec Arc. Image courtesy of New Zealand-American Submarine Ring of Fire 2005 Exploration, NOAA Vents Program.
Volcano Number:
241140
Volcano Name:
Healy
Country:
New Zealand
Volcano Type:
Stratovolcano
Last Eruption:
1360 CE
Elevation:
-980m
Tectonic Setting:
Subduction zone / Oceanic crust (< 15 km)
Latitude:
-35.004
Longitude:
178.973
Details
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Healy submarine volcano lies along the South Kermadec Ridge and consists of an elongated edifice with a 3 x 4 km wide caldera at the NE end whose rim reaches to 1,150 m below sea level. A smaller caldera lies to the SW, and a cone, Cotton volcano, rises to 980 below sea level at the SW end of the 15-km-long complex. The flat-lying floor of the larger NE caldera lies 250-400 m below the caldera rim. Rhyodacitic pumice deposits mantle the caldera floor and walls, as well as the flanks. Active hydrothermal venting has been observed on the lower part of the southern caldera wall. The roughly 590-year-old sea-rafted Loisels Pumice deposit found in many Holocene beach sequences of North Island, New Zealand, and as far away as the Chatham Islands, 650 km east of New Zealand, is chemically and texturally similar to pumices from Healy caldera.
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Eruption Data from the Global Volcanism Program of the Smithsonian Institution
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Emissions Data from the Global Volcanism Program of the Smithsonian Institution
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Data from the Earthchem Library
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Data from the Earthchem Portal
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Data from the SESAR Database
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Data from the MaGa Database
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Data from UNAVCO
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Data from USIEI
Sorry. This volcano is not covered by any USIEI projects
Data from IRIS FDSNWS
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