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Interior of Incapillo
Interior of Incapillo

Incapillo is a Pleistocene-age caldera – a depression formed by the collapse of a volcano – in La Rioja Province, Argentina. It is part of the southernmost volcanic centre in the Andean Central Volcanic Zone (CVZ). Subduction of the Nazca Plate beneath the South American Plate is responsible for most of the volcanism in the CVZ. Volcanism commenced in the Incapillo region 6.5 million years ago, forming the high volcanic edifices of Monte Pissis, Cerro Bonete Chico and Sierra de Veladero. Incapillo is known to have erupted the Incapillo ignimbrite 0.52 ± 0.03 and 0.51 ± 0.04 million years ago; this has a total volume of about 20.4 cubic kilometres (4.9 cu mi). A caldera with dimensions of 5 by 6 kilometres (3.1 mi × 3.7 mi) formed during the eruptions. Later volcanism generated more lava domes within the caldera and a debris flow in the Sierra de Veladero. The lake within the caldera may overlie an area of ongoing hydrothermal activity. ( Full article...)

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Green kingfisher

The green kingfisher (Chloroceryle americana) is a species of bird in the kingfisher family, Alcedinidae. It is found from the southern United States, south through Central America, and in every mainland South American country except Chile. The green kingfisher is about 20 cm (7.9 in) long and weighs about 35 to 40 g (1.2 to 1.4 oz), with females being larger and heavier than males. It has various vocalisations, including one described as resembling "the striking of two pebbles together" and another as "a harsh, buzzy scold". This male green kingfisher, a member of the subspecies C. a. americana, was spotted close to the Cristalino River in the Pantanal, Brazil.

Photograph credit: Charles J. Sharp

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Saulos Chilima in April 2022
Saulos Chilima
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June 12: First day of Shavuot (Judaism, 2024); Dia dos Namorados in Brazil; Loving Day in the United States ( 1967)

Boeing 777
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ZX Spectrum
ZX Spectrum
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From Wikipedia, the free encyclopedia


Welcome to Wikipedia,
the free encyclopedia that anyone can edit.

single column hide sidebar · advanced mode
Today's featured article
Interior of Incapillo
Interior of Incapillo

Incapillo is a Pleistocene-age caldera – a depression formed by the collapse of a volcano – in La Rioja Province, Argentina. It is part of the southernmost volcanic centre in the Andean Central Volcanic Zone (CVZ). Subduction of the Nazca Plate beneath the South American Plate is responsible for most of the volcanism in the CVZ. Volcanism commenced in the Incapillo region 6.5 million years ago, forming the high volcanic edifices of Monte Pissis, Cerro Bonete Chico and Sierra de Veladero. Incapillo is known to have erupted the Incapillo ignimbrite 0.52 ± 0.03 and 0.51 ± 0.04 million years ago; this has a total volume of about 20.4 cubic kilometres (4.9 cu mi). A caldera with dimensions of 5 by 6 kilometres (3.1 mi × 3.7 mi) formed during the eruptions. Later volcanism generated more lava domes within the caldera and a debris flow in the Sierra de Veladero. The lake within the caldera may overlie an area of ongoing hydrothermal activity. ( Full article...)

Recently featured:
Today's featured picture
Green kingfisher

The green kingfisher (Chloroceryle americana) is a species of bird in the kingfisher family, Alcedinidae. It is found from the southern United States, south through Central America, and in every mainland South American country except Chile. The green kingfisher is about 20 cm (7.9 in) long and weighs about 35 to 40 g (1.2 to 1.4 oz), with females being larger and heavier than males. It has various vocalisations, including one described as resembling "the striking of two pebbles together" and another as "a harsh, buzzy scold". This male green kingfisher, a member of the subspecies C. a. americana, was spotted close to the Cristalino River in the Pantanal, Brazil.

Photograph credit: Charles J. Sharp

Recently featured: Zhou Fang - Oblique shock - Euchloe penia

In the news
Saulos Chilima in April 2022
Saulos Chilima
On this day…

June 12: First day of Shavuot (Judaism, 2024); Dia dos Namorados in Brazil; Loving Day in the United States ( 1967)

Boeing 777
Boeing 777
More anniversaries:
Did you know…
ZX Spectrum
ZX Spectrum
What is Wikipedia?

Wikipedia is an encyclopedia written collaboratively by many of its readers. It is a special type of website, called a wiki, that makes collaboration easy.

Want to help out? Get started with our Introduction.

Explore
Other areas
  • Newcomer's help page — A place to get help with editing and finding your way around Wikipedia.
  • Reference desk — Serving as virtual librarians, Wikipedia volunteers tackle your questions on a wide range of subjects.
  • In other languages — Apart from English, Wikipedia is also available in many other languages.
Sister projects

Wikipedia is hosted by the Wikimedia Foundation, a non-profit organization that also hosts a range of other projects:

Commons
Free media repository
Wikinews
Free-content news
Wiktionary
Dictionary and thesaurus
Wikiquote
Collection of quotations
Wikibooks
Free textbooks and manuals
Wikisource
Free-content library
Wikispecies
Directory of species
Wikiversity
Free learning materials and activities
Meta-Wiki
Wikimedia project coordination

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