Ebeko volcano
SOTT
SIGNS
OF THE
TIMES
OF THE
TIMES
Welcome to Sott.net
The World for People who Think
VolcanoesS
San Cristobal volcano
During the explosion, "the ash column reached a height of 1,500 meters above (the) crater of the volcano that due to the effect of the wind" reached with "a small layer of ashes the communities Las Grecias 3, Las Grecias 4 and the city of El Viejo", indicated the Nicaraguan Institute of Territorial Studies (Ineter) in a communiqué.
However, the volcano's activity was of "moderate intensity" and did not cause major damage to nearby towns, it said.
© USGSGeological map of Alaska showing various exotic terranes.
The above schematic of Alaska reveals regions of rock strata that appear to have "accreted" to an original craton. Southern Alaska is composed of fragments in all shapes and sizes, each one telling its own tale. They are all "exotic terranes", formed at different places and times. How they were transported to their present location, and why some are rotated with respect to adjoining terranes is a mystery.
Some exotic terranes arrived from regions on the other side of the world, while others are from nearby locations. They are each quite different from one another in their characteristics, representing strata from many so-called "geologic ages". There are deposits from the Quaternary period lying in proximity to those from the Cambrian and Mesozoic periods. Those epochs represent hundreds of millions of years. If the theory of continental movement is correct, then "collisions" between landmasses took place more than a dozen times in Alaska. However, each terrane is not arranged side-by-side with its neighbor, they are intermixed with each other, as the schematic reveals.
Another puzzling aspect to the terrane lithography is that some of it is oceanic crust, while some is continental. Some terranes appear to be from volcanic islands. Others appear to be the remains of continental shelves from South America. Less than one percent of Alaska is thought to be from the "original" North American continent.
In the Journal of Scientific Exploration, Vol. 14, No. 3, pages 307-352, David Pratt took issue with the theory of tectonic displacement of continental and ocean floor structure. As he wrote: "The classical model of thin lithospheric plates moving over a global asthenosphere is shown to be implausible."
Ibu volcano
Mount Bulusan
This video will discuss these volcano related news stories, as told and analyzed by a volcanologist.
© AFPWorkers sweep an ash-covered highway in Juban after the eruption of Bulusan volcano in the Philippines.
The blast from Bulusan volcano lasted 18 minutes, the Philippine seismological agency said, impairing road visibility and forcing airlines to cancel flights.
On June 5, Mount Bulusan sent a grey plume shooting up at least one kilometre (0.6 miles) and covered 10 villages with ash.
Residents of Juban town in Sorsogon province, still reeling from last week's eruption, were woken up Sunday by the volcano's thundering.
"I thought it was just raining, but when I looked outside there was ash everywhere," resident Antonio Habitan told AFP. "Our river was once clear but now it is ash-coloured."
No casualties were reported, but the seismological agency raised the alert level to one on the five-level system, indicating "low-level unrest".
"We still can't say that it is over. It's still possible that this eruption could be followed by another one, that's why we need to be careful with the Bulusan volcano," agency head Renato Solidum told local radio station DZBB.
Hot lava flowing from Italy's Mount Etna
In the last week, Mount Etna in Italy produced one of its largest lava flows during the last 48 months, sending a flow of molten rock 4 kilometers to the east. Meanwhile in Iceland, the Askja volcano is continuing to show signs of unrest through continued magmatic uplift and occasional earthquake swarms. And, in Costa Rica, the Rincon de la Vieja volcano produced a series of phreatic explosions, bringing its total phreatic eruption count during the month of May to nearly 50. This video will discuss these volcano related news stories, as told and analyzed by a volcanologist.
© Ruben BasilioBulusan volcano emits a steam-rich grey plume at least 1 kilometer tall, in Sorsogon on June 5, 2022. Phivolcs has placed the volcano under Alert Level 1 following a phreatic eruption there Sunday.
Alert Level 1 (low level unrest) means that the volcano is currently in an abnormal condition, said Phivolcs.
It said a phreatic eruption occurred at the volcano summit at 10:37 a.m. Sunday and it lasted approximately 17 minutes.
"The event was poorly visible through cloud cover over the edifice although a steam-rich grey plume at least one kilometer tall was observed from Juban, Sorsogon and was subsequently observed to drift west," said Phivolcs in an advisory.
