Mount Chimborazo is in which South American country?
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Chimborazo.txt
Chimborazo
Chimborazo is a currently inactive stratovolcano in the Cordillera Occidental range of the Andes. Its last known eruption is believed to have occurred around A.D. 550.

With a peak elevation of , Chimborazo is the highest mountain in Ecuador. It is the highest peak near the equator. Chimborazo is not the highest mountain by elevation above sea level, but its location along the equatorial bulge makes its summit the farthest point on the Earth's surface from the Earth's center.

Geography

Location

Chimborazo is in the Cordillera Occidental of the Andes of central Ecuador, 150 km (93 mi) south-southwest of the capital Quito. It is a neighbor to 5,018 m high Carihuairazo. Chimborazo's summit rises 2,500 m above the surrounding highlands (~3,500 to 4,000 m) with a ~20 km wide base.

Under clear conditions, the summit of Chimborazo can be seen from the coastal city Guayaquil, nearly 140 km away. The nearest cities are Riobamba (~30 km to the southeast), Ambato (~30 km to the northeast) and Guaranda (~25 km to the southwest). Chimborazo is surrounded by the Reserva de Produccion Faunistica Chimborazo, which forms a protected ecosystem to preserve the habitat for the Andes native camelids of vicuña, llama and alpaca.

Chimborazo is at the main end of the Ecuadorian Volcanic Arc, north west of the town of Riobamba. Chimborazo is in la Avenida de los Volcanes (the Avenue of Volcanoes) west of the Sanancajas mountain chain. Carihuairazo, Tungurahua, Tulabug, and El Altar are all mountains that neighbor Chimborazo. The closest mountain peak, Carihuairazo, is  from Chimborazo.  There are many microclimates near Chimborazo, varying from desert in the Arenal to the humid mountains in the Abraspungo valley. 

Glacier

The top of Chimborazo is completely covered by glaciers, with some north-eastern glacier arms flowing down to 4,600 m. Its glacier is the source of water for the population of the Bolivar and Chimborazo provinces of Ecuador. Chimborazo glacier's ice mass has decreased over the past decades, which is thought by some to be due to the combined influences of global warming, ash covers from recent volcanic activity of Tungurahua, and the El Niño phenomenon.  

As on other glaciated Ecuadorian mountains, Chimborazo's glacial ice is mined by locals (the so-called Hieleros from Spanish Hielo for Ice) to be sold in the markets of Guaranda and Riobamba. In earlier days, the people transported ice for cooling uses down to coastal towns such as Babahoyo or Vinces. 

Elevation

With an elevation of , Chimborazo is the highest mountain in Ecuador and the Andes north of Peru; it is higher than any more northerly summit in the Americas.

Farthest point from Earth's center

The summit of Mount Everest reaches a higher elevation above sea level, but the summit of Chimborazo is widely reported to be the farthest point on the surface from Earth's center,  with Huascarán a very close second. The summit of the Chimborazo is the fixed point on Earth that has the utmost distance from the center – because of the oblate spheroid shape of the planet Earth, which is "thicker" around the Equator than measured around the poles.It has been difficult to resolve this issue definitively because of error margins in summit elevations and geoid data. Application of the formula at Earth radius#Radius at a given geodetic latitude shows that the Earth's radius is 520 m greater at Chimborazo than at Huascaran, with most recent data showing another 5 m due to local variations in gravity, for a total of 525 m. Two heights are given for Huascarán -  from the Peruvian National Geographic Institute (IGN) map, and  from the Austrian Alpine Club (OeAV) survey map. Chimbaro is now . Thus Chimborazo's summit is roughly either 20 m or 40 m further from the Earth's center than that of Huascaran. Chimborazo is one degree south of the Equator and the Earth's diameter at the Equator is greater than at the latitude of Everest ( above sea level), nearly 27.6° north, with sea level also elevated. Despite being  lower in elevation above sea level, it is  from the Earth's center,  farther than the summit of Everest ( from the Earth's center).In this ranking, several other Andean peaks as well as Africa's highest mountain, Kilimanjaro, exceed Everest. However, by the criterion of elevation above sea level, Chimborazo is not even the highest peak of the Andes.

Geology

Chimborazo is an ice-capped inactive volcano in Ecuador. Chimborazo is a double volcano composed of one volcanic edifice on top of another.  Chimborazo shows four summits; Veintimilla, Whymper, Politecnica, and Nicolas Martínez. The Veintimilla peak is about 6230 m high. The Whymper peak is the highest point on the mountain at 6,263 meters. The Politecnica peak is 5820 m high. The last peak, Nicolas Martínez, is 5570 m high. This peak was named after the father of Ecuadorian mountaineering. The volcano is categorized as a stratovolcano. This type of volcano is characterized as having low slopes at the bottom that gradually get steeper the higher up the mountain. Chimborazo has a circumference of 78 mi and a diameter of 30 mi. Chimborazo's upper elevations are covered in glaciers that are decreasing in size due to climate change and falling ash from the nearby volcano, Tungurahua. In addition to the glaciers, the volcano is covered with craters. The volcano is dominantly andesitic to dactic. This means that the lava is blocky, or flowing down the sides of the volcano, or somewhere in between.

The highest point on Chimborazo is the farthest point from the center of the earth, thus it is also the point on the earth's surface which is at some time closer to the sun than any other point on the earths surface at any time during one year. Chimborazo is the farthest point from the center of the earth because the earth bulges out at the equator and Chimborazo is located just one degree south of the equator. Mount Everest is 28° north of the equator. This is why Chimborazo is 2.1 kilometres farther from the earth's center than Everest. Chimborazo is 73.5 metres  higher than the highest mountain in North America. Chimborazo is often associated with the nearby volcano Cotopaxi, although the two volcanoes have completely different structures.

Volcanism

Chimborazo is a dominantly andesitic-dacitic stratovolcano. About 35,000 years ago a collapse of Chimborazo produced a debris avalanche with an average thickness of forty meters. which underlies the city of Riobamba. It temporarily dammed the Rio Chambe, causing an ephemeral lake.

Chimborazo then erupted several times during the Holocene, the last time around 550 AD ± 150 years. The eruptions after the collapse were primarily andesitic, or blocky, coagulated lava flow. These eruptions produced pyroclastic surges that went down as far as 3800 meters altitude. There has been at least 7 eruptions in the past 10000 years. Chimborazo is officially considered inactive, but studies show that there might be an eruption in the future. The average time between eruptions for Chimborazo is 1000 years, and the last eruption was 1400 years ago.

History

Until the beginning of the 19th century, it was thought that Chimborazo was the highest mountain on Earth (measured from sea level), and such reputation led to many attempts on its summit during the 17th and 18th centuries.

In 1746, the volcano was explored by French academicians from the French Geodesic Mission. Their mission was to determine the sphericity of the Earth. Their work along with another team in Lapland established that the Earth was an oblate spheroid rather than a true sphere. They did not reach the summit of Chimborazo.

In 1802, during his expedition to South America, Baron Alexander von Humboldt, accompanied by Aimé Bonpland and the Ecuadorian Carlos Montúfar, tried to reach the summit. From his description of the mountain, it seems that before he and his companions had to return suffering from altitude sickness they reached a point at 5,875 m, higher than previously attained by any European in recorded history. (Incans had reached much higher altitudes previously; see Llullaillaco). In 1831, Jean Baptiste Boussingault and Colonel Hall reached a new "highest point", estimated to be 6,006 m.  

Other failed attempts to reach the summit followed.

On 4 January 1880, the English climber Edward Whymper reached the summit of Chimborazo.  The route that Whymper took up Chimborazo is now known as the Whymper route. Edward Whymper, and his Italian guides Louis Carrel and Jean-Antoine Carrel, were the first Europeans to summit a mountain higher than 20,000 feet. As there were many critics who doubted that Whymper had reached the summit, later in the same year he climbed to the summit again, choosing a different route (Pogyos) with the Ecuadorians David Beltrán and Francisco Campaña.

Etymology

Several theories regarding the origin of the name Chimborazo exist. In many dialects of Quichua or Quechua, "chimba" means "on the other side" as in "on the other side of the river" or "on the opposite bank." Other dialects pronounce this word "chimpa." Also, "razu" means "ice" or "snow." Local Quichua speakers will say that Chimborazo is a hispanicized pronunciation of "chimbarazu," meaning "the snow on the other side."  Another theory suggests it is a combination of the Cayapa Schingbu for Women and the Colorado/Quichua Razo for Ice/Snow resulting in Women of Ice. According to another, Chimbo is Jivaro for Throne of Master/God resulting in Icethrone of God. The locals also used to call the mountain Urcurazu, with the Quichua Urcu for Mountain resulting in Mountain of Ice. In local indigenous mysticism, Chimborazo represents Taita (Father) whereas neighbouring Tungurahua is seen as Mama, hence Taita Chimborazo and Mama Tungurahua.

SAETA Flight 232

In August 1976, SAETA Flight 232 carrying 55 passengers and four crew members aboard a Vickers Viscount from Quito to Cuenca disappeared en route. In February 2003, after 27 years,  the aircraft was found with the bodies of its 59 occupants at 5400 m elevation on Chimborazo by Ecuadorian climbers on the rarely used eastern route Integral. 

Other

* Chimborazo is featured on the Ecuadorian coat of arms, to represent the beauty and richness of the Ecuadorian Sierra (Highlands).
* Simón Bolívar's poem, "Mi delirio sobre el Chimborazo", was inspired by the mountain.
* Walter J. Turner's poem, "Romance" contains the couplet "Chimborazo, Cotopaxi/They had stolen my soul away!"
* Luis Alberto Costales's poem, "Canto al Chimborazo" (Sing of Chimborazo). 

Mountaineering

As Ecuador's highest mountain, Chimborazo is a very popular climb and can be climbed year round with the best seasons being December–January and July–August.

Routes

The easiest (Grade: PD) and most climbed routes are the Normal and the Whymper route. Both are western ridge routes starting at the Whymper hut and leading via the Ventemilla summit to the main (Whymper) summit.
There are several other less used and more challenging routes on the other mountains faces and ridges leading to one of Chimborazo's summits: Main (Whymper, Ecuador), Politecnico (Central), N. Martinez (Eastern). The mountain is contained on the IGM (Instituto Geografico Militar) 1:50000 Map Chimborazo (CT-ÑIV-C1).

Huts

There are two functioning Huts, the Carrel Hut (4,850 m) and the nearby Whymper Hut (5,000 m). The Carrel Hut can be reached by car from Riobamba, Ambato or Guaranda. On the north-west side there is the now defunct Zurita hut (4,900 m), which served as base for the Pogyos route.

Climbing

El Castillo is the most popular route up the volcano. This route is usually climbed December to February and June to September. This route involves climbing the west side of the volcano. The route starts at Whymper hut to a saddle above El Castillo. From the saddle, there is a glacier ridge then you go to the Veintemilla summit. Veintemilla summit is often the turnaround point for climbers. There is a 30-minute snow filled basin between Veintemilla summit and Whymper summit. Whymper summit is the highest point of the mountain. The El Castillo route takes around eight to twelve hours to ascend and about three to five hours to descend. Climbing Chimborazo is dangerous due to risk of avalanches, the severe weather conditions, and the fact that it is covered in glaciers. Climbing should begin at night in order to reach the summit before sunrise when the snow melts increasing the chance of avalanche and rockfall. The climb itself demands skill. The climb is often on black ice in which crampons and other high tech climbing equipment are required. On November 10, 1993 three parties of climbers, one ascending and two descending, were caught in an avalanche on the steep slopes below the Veintimilla summit. This avalanche buried ten climbers in a crevasse at . These climbers comprised: six French, two Ecuadorans, one Swiss, and one Chilean. After the ten climbers were buried in snow, it took twenty people and ten days to find their bodies. This is considered the worst climbing accident in Ecuador to date.
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