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Earth of fire

Actualité volcanique, Articles de fond sur étude de volcan, tectonique, récits et photos de voyage

Publié le par Bernard Duyck
Publié dans : #"Parole aux lecteurs"

In the "Reader's Speech" section, Mathias sends us beautiful images of the active crater of Copahue, a volcano on the border of Chile and Argentina; His video dates from May 20, 2017, and shows us the degassing / the fumarollian activity of the crater.

Copahue - video of 20.05.2017 / The Last Baroud

Copahue - video of 20.05.2017 / The Last Baroud

Difficult to access in this season, the Copahue volcano is an elongated composite cone built in the 6.5 km / 8.5 km Trapa-Trapa caldera, formed between 600,000 and 400,000 years ago, near the northwestern edge of the caldera Caviahue. The summit crater, belonging to a line of nine craters aligned ENE-OSO and 2 km long, is home to an acid crater lake, displaying intense fumarolian activity.
Low to moderate eruptions have been recorded at Copahue since the 18th century; The eruptions of the crater lake in the 20th century ejected pyroclastic rocks and fragments of sulfur. The last eruptions concern the acid lake, also referred to as El Agrio or Del Agrio. They date from 07.2000 to 10.2000; 12.2012-12.2013; 07.2014-12.2014; And 09,2015-12,2016. (GVP)

The Copahue complex - with calderas Del Agrio and Trapa-Trapa - map adapted from a map of O. González-Ferrán / GVP

The Copahue complex - with calderas Del Agrio and Trapa-Trapa - map adapted from a map of O. González-Ferrán / GVP

Copahue, seen from Caviahue / Provincia del Neuquén - picture Vale caviahue 18.04.2017 / Twitter

Copahue, seen from Caviahue / Provincia del Neuquén - picture Vale caviahue 18.04.2017 / Twitter

Copahue - webcam Caviahue 25.05.2017 afternoon - Sernageomin

Copahue - webcam Caviahue 25.05.2017 afternoon - Sernageomin

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