翻訳と辞書
Words near each other
・ Chaco Petrolero
・ Chaco Province
・ Chaco sanjuanina
・ Chaco side-necked turtle
・ Chaco Slope
・ Chaco socos
・ Chaco tecka
・ Chaco tigre
・ Chaco tortoise
・ Chaco tree frog
・ Chaco tucumana
・ Chaco War
・ Chacalluta International Airport
・ Chacaltaya
・ Chacaltianguis
Chacana
・ Chacang
・ Chacao
・ Chacao (cacique)
・ Chacao Channel
・ Chacao Channel bridge
・ Chacao, Venezuela
・ Chacapalpa District
・ Chacapampa District
・ Chacarera
・ Chacarero
・ Chacarilla Canton
・ Chacarilla Formation
・ Chacarilla Municipality
・ Chacarita


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Chacana : ウィキペディア英語版
Chacana

Chacana is a large 32-km long - 18-24 km wide caldera that has erupted in historical times. It forms one of the largest rhyolite centers in the Northern Andes with major eruptions over the past 240,000, 180,00, and 160,000 years ago and has had andesitic-rhyolitic volcanism.〔 With dactic lava flows continuing into historical times. Lava domes were also constructed in the Holocene. Chacana is located 30 km from Quito and the large Antisana volcano is constructed to the southeast.
==Eruptions==
Eruptions in the past 10,000 years have been limited to small lava flows originating from Fissures.
* 1760 Eruption: A small (VEI 0) Eruption, the first in historical time, came from a flank vent on the SW of the Caldera which caused some damage.
* 1773 Eruption: Another small eruption took place in 1773. It came from a fissure in the South part of the caldera.

抄文引用元・出典: フリー百科事典『 ウィキペディア(Wikipedia)
ウィキペディアで「Chacana」の詳細全文を読む



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