Patilla Pata is a

stratovolcano A stratovolcano, also known as a composite volcano, is a conical volcano built up by many layers (strata) of hardened lava and tephra. Unlike shield volcanoes, stratovolcanoes are characterized by a steep profile with a summit crater and per ...

in the

Oruro Department Oruro (; Quechua: ''Uru Uru''; Aymara: ''Ururu'') is a department of Bolivia, with an area of . Its capital is the city of Oruro. According to the 2012 census, the Oruro department had a population of 494,178. Provinces of Oruro The departme ...

Bolivia , image_flag = Bandera de Bolivia (Estado).svg , flag_alt = Horizontal tricolor (red, yellow, and green from top to bottom) with the coat of arms of Bolivia in the center , flag_alt2 = 7 × 7 square p ...

. It is situated in the

Sajama Province Sajama is a province in the northwestern parts of the Bolivian Oruro Department. Location ''Sajama'' province is one of the sixteen provinces in the Oruro Department. It is located between 17° 39' and 18° 39' South and between 67° 38' and 68° ...

, in the west of the Curahuara de Carangas Municipality, at the border with

Chile Chile, officially the Republic of Chile, is a country in the western part of South America. It is the southernmost country in the world, and the closest to Antarctica, occupying a long and narrow strip of land between the Andes to the east a ...

. Patilla Pata lies south-west of the mountain

Jisk'a Kunturiri Jisk'a Kunturiri (Aymara ''jisk'a'' little, ''kunturi'' condor, ''-ri'' a suffix, ''Kunturiri'' the name of a neighboring mountain, "little Kunturiri", Hispanicized spelling ''Jiskha Condoriri'') is a mountain in the Andes of Bolivia which rises ...

, north-east of the lake Q'asiri Quta ''(Khasiri Kkota)'' and the mountain Qullqi Warani, west of the little lake Sura Pata, south-east of the mountains Laram Q'awa, Kunturiri and Milluni and south of the little lake named Ch'iyar Quta. The river Junt'uma K'uchu (Aymara ''junt'u'' warm, hot, ''uma'' water, ''k'uchu'' corner, "warm water corner", ''Junthuma Khuchu'') originates south of Patilla Pata. It flows to the south-east as a right affluent of the Sajama River. (unnamed, south of ''Chiar Kkota'') The date of its last eruption is unclear, but it is unlikely to be during the

Holocene The Holocene ( ) is the current geological epoch. It began approximately 11,650 cal years Before Present (), after the Last Glacial Period, which concluded with the Holocene glacial retreat. The Holocene and the preceding Pleistocene togethe ...

as the mountain is heavily glaciated. The composition of the volcano is largely

andesitic Andesite () is a volcanic rock of intermediate composition. In a general sense, it is the intermediate type between silica-poor basalt and silica-rich rhyolite. It is fine-grained (aphanitic) to porphyritic in texture, and is composed predomina ...

, but there are also a number of

basaltic Basalt (; ) is an aphanitic (fine-grained) extrusive igneous rock formed from the rapid cooling of low-viscosity lava rich in magnesium and iron (mafic lava) exposed at or very near the surface of a rocky planet or moon. More than 90% of a ...

lava Lava is molten or partially molten rock (magma) that has been expelled from the interior of a terrestrial planet (such as Earth) or a moon onto its surface. Lava may be erupted at a volcano or through a fracture in the crust, on land or un ...

flows.

References

Sources

* Stratovolcanoes of Bolivia Subduction volcanoes Polygenetic volcanoes Volcanoes of Oruro Department Volcanoes of La Paz Department (Bolivia) Pleistocene stratovolcanoes {{Oruro-geo-stub

See also

References

Sources