Payún Matrú is a shield volcano in the Malargüe Department of Mendoza
Province, Argentina. Activity in its volcanic field commenced at least
2.5 million years ago and continued until about 515 years ago. Payún
Matrú lies in the Payenia volcanic province in the back-arc region of
the Andean Volcanic Belt, formed by the subduction of the Nazca Plate
beneath the South American Plate. The volcano developed over sediments
and volcanic rocks ranging from Mesoproterozoic to Tertiary age. It
consists of a large shield volcano capped off by a 7–8 km
(4.3–5.0 mi) caldera that formed during a large explosive eruption
between 168,000 and 82,000 years ago, along with a compound volcano
3,680–3,797 m (12,073–12,457 ft) high, and scoria cones and lava
flows due west and east from the main shield volcano. One of these lava
flows, the Pleistocene Pampas Onduladas flow, is the longest one in the
world from the Quaternary, at 167–181 km (104–112 mi).
Read more: <https://en.wikipedia.org/wiki/Pay%C3%BAn_Matr%C3%BA>
Today's selected anniversaries:
London Waterloo station, Britain's busiest railway station by
passenger usage, was opened by the London and South Western Railway.
USS Nevada, the United States Navy's first "super-
dreadnought", was launched.
To Kill a Mockingbird, a novel by Harper Lee featuring themes
of racial injustice and the loss of innocence in the Deep South of
America, was published.
The Islamist militia group Al-Shabaab carried out multiple
suicide bombings in Kampala, Uganda, killing 74 people and injuring 85
Wiktionary's word of the day:
(historical) A furnace or stove designed and used to maintain uniform
heat, primarily used by alchemists.
Wikiquote quote of the day:
Folks don’t like to have somebody around knowin’ more than
they do. It aggravates ‘em. You’re not gonna change any of them by
talkin’ right, they’ve got to want to learn themselves, and when
they don’t want to learn there’s nothing you can do but keep your
mouth shut or talk their language.
--To Kill a Mockingbird
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