The the peaks of Cerro Negro de Mayasquer (not Cerro Negro, Nicaragua) and Chiles are black and white twins in a volcanic complex on the border of Colombia and Ecuador in the Municipality of Cumbal south of the Department of Nariño. Cerro Negro is a stratovolcano with a 1.8 km crater opening to the west. Andesitic and dacitic…
Situated on the Cascade plateau, the region known as the Tumalo Volcanic Center was active in the Pleistocene epoch with explosive eruptions between 700,000 and 170,000 years ago that left extensive pyroclastic deposits on which basaltic and basaltic andesitic lava flows formed a great number of shields. One of these eruptions resulted in tephra deposits as…
The Caribou was standing on the plains 30 kilometers away from the mountain; it had not fled the roaring mountain more than that. After all, the ash was driven by the fierce wind to the north, and where it stood to the west in the early summer morning it was only a spectacular view. It…
VolcanoCafé 