Calderas

The following article is from The Great Soviet Encyclopedia (1979). It might be outdated or ideologically biased.

Calderas

large oval-shaped or round depressions of volcanic origin, with steep sides that are frequently stepped. Calderas are up to 10-20 km across and several hundred meters deep. A distinction is made between explosion calderas, which are formed during powerful explosions of gases escaping from volcanic vents, and collapse calderas, which occur when the roof of an underground volcanic focus sinks along circular fractures because material has been discharged from the focus during volcanic eruptions. Collapse calderas are more common and larger than explosion calderas.

References in periodicals archive ?

The new approach was applied in southern Italy to the Campi Flegrei, a caldera close to Naples, which has a population of nearly one million.

Scientists forecast where volcano would erupt

"One question that has puzzled scientists is where magma is located beneath the caldera, and our study provides the first evidence of a hot zone under the city of Pozzuoli that extends into the sea at a depth of [2.5 miles]," lead researcher Luca De Siena said in a statement from the (https://www.abdn.ac.uk/news/11141/) University of Aberdeen .

Is This Supervolcano In Italy Ready To Erupt?

And when the day was especially clear, I also saw glimpses of the Batangas side of the Taal Caldera.

Summer is for quick Tagaytay getaways

The massif has geologic and morphologic characteristics widely different from the above-mentioned volcanic calderas. The main constituent rocks are holocrystalline aegirine phonolite, so-called tinguaite, nepheline syenite, and vent-filling intrusive pyroclastic rocks.

Principle and geomorphological applicability of summit level and base level technique using Aster Gdem satellite-derived data and the original software Baz/Principio e aplicabilidade das tecnicas de seppomen e sekkokumen para analises geomorfologicas com base nos dados de satelites do Aster Gdem e o software original Baz

(1984) Formation of the Aira Caldera, southern Kyushu, ~22,000 years ago.

Cause and risk of catastrophic eruptions in the Japanese Archipelago

Calderas, which typically exhibit high levels of seismic and hydrothermal activity, often swell, suggesting movement of fluids beneath the surface.

Scientists find "Rosetta Stone" of supervolcanoes in Italian Alps

UMISA (based in Barcelona, Spain) has a technical assistance and sales agreement with Cuba's Asociacion Nacional de Calderas (National Boiler Association, Alastor) to modernize the production of industrial boilers and to improve the quality of industrial boilers manufactured by the 18-division Alastor.

INDUSTRIAL BOILER DEALS

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