Mountain Kilimanjaro
Mount Kilimanjaro is an African mountain with its volcanic cones, "Kibo", "Mawenzi", is a dormant volcano in Tanzania. It is the highest mountain in Africa, and rises approximately 4,900 meters (16,100 ft) from its base to 5,895 meters (19,341 ft) above sea level. The first persons known to have reached the summit of the mountain were Hans Meyer and Ludwig Purtscheller in 1889. The mountain is part of the Kilimanjaro National Park and is a major climbing destination. The mountain has been the subject of many scientific studies because of its shrinking glaciers and disappearing
Geology and physical feature.
Uhuru Peak is the highest summit on Kibo's crater rim. The Tanzania National Parks Authority, a Tanzanian governmental agency, and the United Nations Educational, Scientific and Cultural Organization list the height of Uhuru Peak as 5,895 m (19,341 ft). That height is based on a British Ordnance Survey in 1952 Since then, the height has been measured as 5,892 metres (19,331 ft) in 1999, 5,891 metres (19,327 ft) in 2008, and 5,888 metres (19,318 ft) in 2014
Geology
The interior of the volcanic edifice is poorly known, given the lack of large scale erosion that could have exposed the interiors of the volcano.
Eruptive activity at the Shira centre commenced about 2.5 million years ago, with the last important phase occurring about 1.9 million years ago, just before the northern part of the edifice collapsed.Shira is topped by a broad plateau at 3,800 metres (12,500 ft), which may be a filled caldera. The remnant caldera rim has been degraded deeply by erosion. Before the caldera formed and erosion began, Shira might have been between 4,900 m (16,000 ft) and 5,200 m (17,000 ft) high. It is mostly composed of basic lavas with some pyroclastics. The formation of the caldera was accompanied by lava emanating from ring fractures, but there was no large scale explosive activity. Two cones formed subsequently, the phonolitic one at the northwest end of the ridge and the doleritic "Platzkegel" in the caldera centre
The youngest dated rocks at Mawenzi are about 448,000 years old. Mawenzi forms a horseshoe shaped ridge with pinnacles and ridges opening to the northeast which has a tower like shape resulting from deep erosion and a mafic dyke swarm. Several large cirques cut into the ring, the largest of these sits on top of the Great Barranco gorge. Also notable are the Ost and West Barrancos on the northeastern side of the mountain. Most of the eastern side of the mountain has been removed by erosion. Mawenzi has a subsidiary peak named Neumann Tower (4,425 metres (14,518 ft)).
Kibo is the largest cone and is more than 15 miles (24 km) wide at the "Saddle Plateau" altitude. The last activity here has been dated to between 150,000 and 200,000 years ago and created the current Kibo summit crater. Kibo still has gas-emitting fumaroles in the crater. Kibo is capped by an almost symmetrical cone with escarpments rising 180 metres (590 ft) to 200 metres (660 ft) on the south side. These escarpments define a 2.5-kilometre-wide (1.6 mi) caldera caused by the collapse of the summit. Within this caldera is the Inner Cone and within the crater of the Inner Cone is the Reusch Crater, which the Tanganyika government in 1954 named after Gustav Otto Richard Reusch upon his climbing the mountain for the 25th time (out of 65 attempts during his lifetime). The Ash Pit, 350 metres (1,150 ft) deep, lies within the Reusch Crater. About 100,000 years ago, part of Kibo's crater rim collapsed, creating the area known as the Western Breach and the Great Barranco.
Climate
The climate of Kilimanjaro is influenced by the height of the mountain, which allows the simultaneous influence of the equatorial trade winds and the high altitude anti-trades, and the isolated position of the mountain. Kilimanjaro has daily upslope and nightly down slope winds, a regimen stronger on the southern than the northern side of the mountain. The flatter southern flanks are more extended and affect the atmosphere more strongly.
Kilimanjaro has two distinct rainy seasons, one from March to May and another around November. The northern slopes receive much less rainfall than the southern ones. The lower southern slope receives 800 to 900 millimeters (31 to 35 in) annually, rising to 1,500 to 2,000 millimeters (59 to 79 in) at 1,500 meters (4,900 ft) altitude and peaking "partly over" 3,000 millimetres (120 in) in the forest belt at 2,000 to 2,300 meters (6,600 to 7,500 ft). In the alpine zone, annual precipitation decreases to 200 millimeters (7.9 in).
The average temperature in the summit area is approximately −7 °C (19 °F). Nighttime surface temperatures on the Northern Ice Field (NIF) fall on average to −9 °C (16 °F) with an average daytime high temperature of −4 °C (25 °F). During nights of extreme radiational cooling, the NIF can cool to as low as −15 to −27 °C (5 to −17 °F).
Snowfall can occur any time of year but is associated mostly with northern Tanzania's two rainy seasons (November–December and March–May).Precipitation in the summit area occurs principally as snow and graupel (250 to 500 millimeters (9.8 to 19.7 in) per year) and ablates within days or years.
Climate zones
• Bush land, 800 m – 1,800 m (2,600 ft – 5,900 ft);
• Rain weald, 1,800 m – 2,800 m (5,900 ft – 9,200 ft);
• Heath and Moorland, 2,800 m – 4,000 m (9,200 ft – 13,100 ft);
• Highland Barrens, 4,000 m – 5,000 m (13,100 ft– 16,400 ft);
• Ice Cap, 5,000 m – 5,895 m (16,400 ft – 19,341 ft).
Mythology
Local legends by the Chagga people tell how a man named Tone once provoked a god, Ruwa, to bring famine upon the land. The people became angry at Tone, forcing him to flee. Nobody wanted to protect him but a solitary dweller that had stones that turned miraculously into cattle. The dweller bid that Tone never opens the stable of the cattle. When Tone did not heed the warning and the cattle escaped, Tone followed it but the fleeing cattle threw up hills to run on, including Mawenzi and Kibo. Tone finally collapsed on Kibo, ending the pursuit.
Another legend has it that Kibo and Mawenzi were good neighbors, until Mawenzi played a prank on Kibo and threw away embers he had received from Kibo and claimed that they had burned out. Kibo eventually got angry and beat Mawenzi badly, explaining why the mountain is so badly degraded. This theory explains Mawenzi's name as "the Battered".
Other legends tell of ivory-filled graves of elephants on the mountain, and of a cow named Rayli that produces miraculous fat from her tail glands. If a man tries to steal such a gland but is too slow in his moves, Rayli will blast a powerful snort and blow the thief hurling down into the plain.
I hope you have understood the background of this great mountain found in Tanzania.
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