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Zealandia Bank

성층화산 · United States · 0m

Zealandia Bank submarine volcano is seen in this NOAA Vents Program bathymetric model from the SW with 2x vertical exaggeration. It consists of two peaks about 1 km apart that rise to near the ocean surface between Guguan and Sarigan Islands. The 2004 survey detected fumarolic activity.
Zealandia Bank submarine volcano is seen in this NOAA Vents Program bathymetric model from the SW with 2x vertical exaggeration. It consists of two peaks about 1 km apart that rise to near the ocean surface between Guguan and Sarigan Islands. The 2004 survey detected fumarolic activity. · 사진: Image courtesy of Susan Merle (Oregon State University/ NOAA Vents Program). · Wikimedia Commons
화산 유형
성층화산
국가
United States
지역
Northwestern Pacific Volcanic Regions / Mariana Volcanic Arc
해발
0m
좌표
16.880, 145.850
마지막 분화
미확인
판구조 환경
Subduction zone / Crustal thickness unknown
화산 지형
Composite
주요 암석
Basalt / Picro-Basalt
지질학적 요약

Zealandia Bank consists of two pinnacles about 1 km apart rising from a submerged bank to near the ocean surface between Guguan and Sarigan Islands. One pinnacle reaches more than 1 m above water at low tide. Andesitic rocks were dredged at the southern peak, which showed some evidence of coral growth. Freshly broken pahoehoe basaltic rocks were recovered from 1.7 km depth on the western flank. The age of the most recent eruptive activity is not known, but a NOAA bathymetric survey in 2004 detected fumarolic activity.

Wikipedia 요약

영어 요약

Zealandia Bank, also known as Farallon de Torres or Piedras de Torres in Spanish, or Papaungan in Chamorro, consists of two rocky pinnacles about 1.5 kilometers apart, in the Northern Mariana Islands in the Pacific Ocean. One reaches a height of approximately 1 meter (3.3 ft) at low tide; the other does not normally broach the surface. They are located 11 nautical miles north-northeast of Sarigan, in between Sarigan and Guguan, but because of their small size, they are not listed in most maps. Zealandia Bank is one of a number of Volcanic Units within the Mariana Arc of Fire National Wildlife Refuge of the Marianas Trench Marine National Monument.

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