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Laguna del Maule caldera (photo: B. Singer / GSA)
Tuesday, Dec 09, 2014
Вулканическое поле Лагуна дель Мауле — потенциально опасный вулкан. Sscientists нашли вызывающий тревогу уровень поднятия, предложив его камера магмы засыпается. Что это значит? В недавнем исследовании, опубликованном в GSA ученые пытаются дать ответ. [подробнее]
Saturday, Apr 20, 2013
Последний доклад Sernageomin указывает, что вулканические беспорядков продолжается снижение интенсивности. GPS измерения показывают, что в центральной части вулканические сооружения наблюдается подъём в размере 1,4 см/месяц и горизонтальное смещение на запад со скоростью 0,64 см в месяц. ... [подробнее]
 

Laguna del Maule вулкан

Кальдера 3092 m / 10,144 ft
Central Chile, -36.02°S / -70.58°W
Текущее состояние: normal or dormant (1 из 5) | Reports
Laguna del Maule volcano books
Last update: 19 Aug 2018
Типичный извержения стиль: explosive
Laguna del Maule Вулкан-извержения: unknown, but less than 10,000 years ago Нет недавних землетрясений
ВремяМагнитный / ГлубинаРасстояниеМестоположение
Laguna del Maule is a 15x25 km wide lake-filled volcanic caldera in central Chile near the border to Argentina, east of Nevados de Longavi volcano. The complex is less than 30,000 years old and covers 300 km2 contains a cluster of small stratovolcanoes, lava domes, and cinder cones some of which are younger than 10,000 years.

Справочная информация:

In this region of the Andes, the volcanoes are about 90 km above the top of the subducting slab of the Nazca place, the so-called Benioff zone, which dips at an angle of 25 degrees. The subducting plate is broken into different segments subducting at different angles under continental crust of varying thickness. This results in zones of different magma generation. Volcanoes around 33-34 deg S are predominantly andesitic, while volcanoes south of 37 deg S are more basaltic. The Laguna del Maule volcano lies in this transition zone. It has more silica-rich, even rhyolite lavas than the volcanoes further to the south, which are mainly basaltic.

4 volcanic units are distinguished in the evoution of the Laguna del Maule volcanic complex:
1) Valley unit
2) Dikes and Volcanic neck unit
3) Volcanic Cones
4) Lake unit

Valley unit: 14 lava flows are found exposed in the upper part of the Maule river valley. Their vents are covered by younger lava flows of the Lake unit.
The Lake unit consists of rhyolitic domes and flows, as well a cluster of Pleistocene cones found around Maule Lake. The individual vents include Domo del Maule, Loma de los Espejos, Colada Occidental, Colada Dendrifonne, Colada las Nieblas, Cerro Barrancas, Colada Cari-Launa, and an explosion crater on the eastern side of the lake. The latter represents the latest activity from Laguna del Maule.
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Source:
- Frederick A. Frey, David C. Gerlach, Rosemary L. Hickey, Leopoldo Lopez-Escobar and Francisco Munizaga-Villavicencio (1984) "Petrogenesis of the Laguna del Maule volcanic complex, Chile (36° S)", Contributions to Mineralogy and Petrology, Volume 88, Numbers 1-2, 133-149


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