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Ghegam vulkaan

stratovolcano, cinder cones 3597 m
Armenia, 40.23°N / 44.95°E
Current status: normal or dormant (1 out of 5) | Reports
Ghegam vulkaan boeken
Typical eruption style: explosive
Ghegam vulkaanuitbarstingen: none in historic times
TijdMag. / DiepteAfstandLocatie
Thu, 14 Mar 2019
Thu, 14 Mar 05:51 UTCM 2.4 / 5 km10 kmAzerbaycan (Armenia)
The Ghegam Ridge, located in west-central Armenia between the capital city of Yerevan and Lake Sevan, contains a broad concentration of lava domes and pyroclastic cones of Pleistocene-to-Holocene age.

Background:

The volcanoes and associated lava flows cover a 65-km-long, 35-km-wide area west of Lake Sevan and south of the Hrazdan River and are concentrated along 3 NNW-SSE-trending alignments. Lava flows from the central and eastern clusters flowed into Lake Sevan. Initial explosive eruptions at the Ghegam Ridge volcanic field were followed by the extrusion of rhyolitic obsidian lava domes and flows. The latest activity produced a series of andesitic and basaltic-andesite cinder cones and lava flows. The central and eastern portions of the Ghegam Ridge contains large areas of Holocene eruptions with morphologically fresh lava flows devoid of vegetation.

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