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: "One of the most eye-catching guides to the world’s volcanoes ever published."
Depuis 2005, VolcanoDiscovery propose des voyages en petits groupes, des randonnées et du trekking, ainsi que des expéditions pour voir des volcans actuellement en activité, des voyages photographiques dans de nombreuses régions d’activité volcanique à travers le monde.
Excellent information for anyone wishing to visit and enjoy active volcanoes safely. Detailed guidelines to 42 different volcanoes around the world.
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Colima volcano (Mexico): July 2015 Montitlán pyroclastic flow deposit a year later
On 11 July 2015, a large dome collapse triggered the second largest block and ash pyroclastic flow of the 21st century (surpassed by Merapi in 2010 only), filling and devastating the Montitlán river valley on Colima's south side to a length of about 10 km.
We visited the deposit approx. 16 months later, in Nov 2016 (compare these to photos taken few days after it was deposited
). This fresh, the deposit is a fantastic geologic showcase. It provides extremely interesting insights into the dynamics of this kind of pyroclastic density currents and its origin:
The pyroclastic flow deposit at the exit of the Montitlán ravine; its surface is still barren, but s... [info
Large, partially burnt or charred tree trunks abound in the deposit, witness of the destructive powe... [info
View towards the volcano in the background, mostly hidden beneath its afternoon cloud (Photo: Tom Pf... [info
View upstream of the flow deposit; Livio gives a scale. (Photo: Tom Pfeiffer) [info
After reaching the exit of the narrow gorge, the flow widened, surpassed the banks of the valley and... [info
During transportation within the turbulent block and ash flow, the blocks constantly bounce against ... [info
New life often starts at the dead wood pieces. (Photo: Tom Pfeiffer) [info
Heike, Ingrid and Livio examine the rocks left by the flow. (Photo: Tom Pfeiffer) [info
First plants manage to grow on the deposit after more than a year. (Photo: Tom Pfeiffer) [info
Close-up of a rock sample: a block of juvenile magma (from the dome or lava flow) made of blackish, ... [info
As we visit the deposit, smaller rockfalls occur on the active lava flow from the volcano behind; th... [info
In the lower part of the deposit, where the flow was about to loose its energy, parts of the old gro... [info
The latest erosion allows to study fresh cross-sections of the pyroclastic flow deposit. (Photo: Tom... [info
Livio standing on top of the deposit viewed from the new river channel. (Photo: Tom Pfeiffer) [info
View of the fine-grained base layer of the block and ash flow (upper portion of section). (Photo: To... [info
The deposit is a chaotic mixture of fine gray ash with blocks and burned wood pieces. (Photo: Tom Pf... [info
Plus sur VolcanoDiscovery:
Videos taken during our volcano expeditions and tours, showing eruptions, volcanic phenomena and more.
A selection of photos of different features: lava flows, lava fountains, lava lakes, fumaroles and more.
Kilauea volcano photos
: The most active volcano in the world with a record long lasting eruption since 1983: images of lava flows, lava lakes, explosions, lava meeting the ocean, aerials and more.