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Mount Kenya was a stratovolcano and probably looked similar to Mt. Fuji |
Mount Kenya is a stratovolcano that was active in the Plio-Pleistocene. The original crater was probably over 6,000 m (19,700 ft) high; higher than Kilimanjaro. Since it became extinct there have been two major periods of glaciation, which are shown by two main rings of moraines below the glaciers. The lowest moraine is found at around 3,300 m (10,800 ft). Today the glaciers reach no lower than 4,650 m (15,260 ft). After studying the moraines, Gregory put forward the theory that at one time the whole summit of the mountain was covered with an ice cap, and it was this that eroded the peaks to how they are today.
The lower slopes of the mountain have never been glaciated. They are now mainly cultivated and forested. They are distinguished by steep-sided V-shaped valleys with many tributaries. Higher up the mountain, in the area that is now moorland, the valleys become U-shaped and shallower with flatter bottoms. These were created by glaciation.
When Mount Kenya was active there was some satellite activity. The north-eastern side of the mountain has many old volcanic plugs and craters. The largest of these, Ithanguni, even had its own ice cap when the main peaks were covered in ice. This can be seen by the smoothed summit of the peak. Circular hills with steep sides are also frequent in this area, which are probably the remains of small plugged vents. However, as the remaining mountain is roughly symmetrical, most of the activity must have occurred at the central plug.
The rocks that form Mount Kenya are mainly basalts, rhomb porphyrites, phonolites, kenytes and trachytes. Kenyte was first reported by Gregory in 1900 following his study of the geology of Mount Kenya.
The geology of the Mount Kenya area was first proposed to the Western Community by Joseph Thomson in 1883. He saw the mountain from the nearby Laikipia Plateau and wrote that it was an extinct volcano with the plug exposed. However, as he had only seen the mountain from a distance his description was not widely believed in Europe, particularly after 1887 when Teleki and von Höhnel ascended the mountain and described what they considered to be the crater. In 1893 Gregory's expedition reached the Lewis Glacier at 5,000 m (16,400 ft). He confirmed that the volcano was extinct and that there were glaciers present. The first thorough survey by Europeans was not undertaken until 1966.
Name | Reason for naming | Named by | Date named |
Batian | Named after Mbatian, the chief medicine man (Laibon) of Maasai when Europeans first discovered Maasailand. | Mackinder | 1899 |
Nelion | Named after Nelieng, the brother of Mbatian | Mackinder | 1899 |
Pt Lenana | Named after Lenana, the second son of Mbatian and next chief medicine man. Lenana was the medicine man at the time of first ascent of Batian. | Mackinder | 1899 |
Coryndon Peak | Named after Sir Robert Coryndon, the Governor of Kenya Colony between 1922 and 1925. |
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Pt Piggott | Named after J. R. W. Piggott, the administrator of British East Africa in 1893. He assisted Gregory's expedition to Mount Kenya. | Gregory | by 1900 |
Pt Thomson | Named after Joseph Thomson, who, in 1863, confirmed Krapf's claim of the existence of Mount Kenya. | Mackinder | by 1900 |
Pt Dutton | E. A. T Dutton explored the mountain. |
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Pt John | Named by a Scottish missionary after the disciple. | Arthur |
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Pt Melhuish | Named after J. D. Melhuish, who was responsible for most of the first maps and photographs of the mountain. | Arthur |
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Krapf Rognon | Named after Dr Krapf, who was the first European to see the mountain in 1849. | Mackinder |
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Pt Peter | Named by a Scottish missionary after the disciple. | Arthur |
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Pt Slade | Named after Humphrey Slade who explored the moorland zone of Mount Kenya. He possibly also made the first ascent of Sendeyo. |
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Terere | Named after Terere, a Maasai laibon. | Mackinder | 1899 |
Sendeyo | Named after Sendeyo, the eldest son of Mbatian and brother of Lenana. | Mackinder | 1899 |
Midget Peak |
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The Hat |
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Delamere Peak | Named after Rt. Hon. Lord Delamere, who was one of the early explorers of East Africa. He arrived in Kenya Colony in 1897. | Melhuish and Dutton |
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Macmillan Peak | Named after Sir Northrup Macmillan, an early pioneer. | Melhuish and Dutton |
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Grigg Peak | Named after Lieut-Col. Sit Edward Grigg, who was the Governor of Kenya Colony from 1925. | Arthur |
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Höhnel Peak (The Castle) | Named after Lieut. Ludwig von Höhnel, who was the cartographer on Teleki's expedition to the mountain. When he drew the mountain from the Ndoro, to the south, he clearly marked this peak, so Gregory named it after him. | Gregory | by 1894 |
Arthur's Seat | Named after Rev. J. W. Arthur, who made several attempts to reach the summit. | Melhuish |
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Sommerfelt Peak | Named after G. A. Sommerfelt, who climbed Batian with Shipton and Harris on 8 January 1929. | Dutton |
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Three Sisters | Named for their appearance. "Three slim columns of rock separated from each other by the merest cracks." | Melhuish and Dutton |
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The Tooth | Named for its appearance. | Melhuish and Dutton |
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The Castle (Höhnel Peak) |
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Gate of Mists | Named for its physical appearance, and because "Kenya" is a corruption of the Maasai word for "mist". | Mackinder | 1899 |
Shipton Peak | Named after E. E. Shipton, who made the first ascent of Nelion and second ascent of Batian in 1929. | Dutton |
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Grand and Petit Gendarmes | Named for their physical appearance. | Shipton and Tilman | 1930 |
Tilman Peak | Named after Tilman, who made many climbs with Shipton in 1930. |
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Pt John Minor |
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Thomson's Flake |
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Western Terminal |
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Eastern Terminal |
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Kibatia |
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Rutundu |
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Giants Billiards Table (also known as Kilingo) | Visually the mountain is very flat topped. | Name mentioned on Mackinder's 1900 map | by 1900 |
Kilingo (also known as Giants Billiards Table) |
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Mugi Hill |
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The Barrow |
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Ithanguni |
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East Mountain (later renamed Ithanguni) |
| Mackinder | 1899 |
Highland Castle |
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Biruoini |
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The Twins | Photographed (and potentially named) by Melhuish. |
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The central peaks of Mount Kenya are volcanic plugs that have resisted glacial erosion. |
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