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Volcán Bárcena

Barcena

火砕丘 · Mexico · 332m

Bárcena volcano forms the elongate island of San Benedicto, seen here from the SW in March 1955. The circular summit crater at the center and the lava delta to the right of the tuff cone formed during an eruption in 1952-53. Pleistocene lava domes are located at the far NE tip of the island. Dark-colored lava from the 1952-53 eruption can be seen in the summit crater.
Bárcena volcano forms the elongate island of San Benedicto, seen here from the SW in March 1955. The circular summit crater at the center and the lava delta to the right of the tuff cone formed during an eruption in 1952-53. Pleistocene lava domes are located at the far NE tip of the island. Dark-colored lava from the 1952-53 eruption can be seen in the summit crater. · 写真: Photo by Adrian Richards, 1955 (U.S. Navy Hydrographic Office). · Wikimedia Commons
タイプ
火砕丘
国
Mexico
地域
Eastern Pacific Volcanic Regions / Mathematicians Ridge Volcanic Province
標高
332m
座標
19.300, -110.820
最終噴火
1953年
テクトニクス環境
Rift zone / Oceanic crust (< 15 km)
火山地形
Minor
主要岩石
Trachyte / Trachydacite
地質学的概要

Volcán Bárcena, formed by eruptions during 1952-53, is the most prominent feature of the 4.5-km-long Isla San Benedicto, the NE-most of the Revillagigedo Islands, 350 km S of the tip of Baja California. Pleistocene trachytic lava domes form the north end of the island, with Bárcena and Montículo Cinerítico at the southern end. Montículo Cinerítico is a smaller tephra cone that preceded and was largely overtopped by Bárcena, and may also have been constructed during the past few hundred years. Growth of the 300-m-high Bárcena tephra cone beginning in August 1952 was accompanied by strong explosive eruptions and pyroclastic flows. The eruption concluded the following year with the emplacement of two small lava domes in the crater and extrusion of a coastal lava delta at the SE base of the cone.

Wikipedia の要約

英語版の要約

The Bárcena volcano is an active but not currently erupting cinder cone type volcano that encompasses the southern end of the San Benedicto Island, Mexico. It is grouped with a chain of volcanic islands known as the Revillagigedo Islands. These islands are situated in close proximity to each other, and can be found in the Pacific Ocean. They are also considered to be part of the Trans-Mexican Volcanic Belt. Volcán Bárcena is positioned 220 miles off the south-eastern coast of the Baja California peninsula. The closest city to Barcena is Cabo San Lucas, Mexico.

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噴火履歴

概要 (VEI時系列)
バーをクリックすると個別の噴火が表示されます
1952~1952 · 1件 · 最大 VEI 319521952195319531953

詳細タイムライン

  1. 1952年VEI 3観測記録
    1952-08-01 ~ 1953-02-24
    South end of Isla San Benedicto

外部リンク

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