Archive: Maps: sketch map of Mount Everest, 1925.
With the flurry of climbing expeditions taking place in the Himalayas in the early 1920s, surely few back then would have believed it would take until 1953 for Mount Everest to be definitively summited. This map was created using information gathered from the prestigious 1921 and 1924 Everest expeditions. The original outline was drawn by Major Oliver Wheeler, one of the surveyors on the 1921 reconnaissance expedition, and later updated adding geological information - the shaded sections-brought back by Noel Odell, oxygen officer for the 1924 expedition (and the last person to see George Mallory and Andrew Irvine alive before their assault on the summit, of which they famously may or may not have succeeded).
'It could hardly be expected that a geologist by profession, however occupied with the numerous other duties appertaining to the expedition, would keep his eyes closed to all the features of the landscape for the five months during which the expedition lasted,' Odell recalled to the Royal Geographical Society on 18 May 1925.
In addition to the altitudes of the various peaks, passes, and camps initially provided by the 1921 survey, this chromolithograph map, published in the Geographical Journal in October 1925, displays the three key geological 'units' which Odell identified, namely the Lower Calcareous series, Gneissose Biotite series, and Upper Calcareous series, as well as two faults of the mountain's northeast-trending ridge.
'It seems more than probably' he continued, 'that the supremacy of Mount Everest itself, since we now know it to be in greater part of soluble calcareous rocks, must be largely due to vertical uplift in the past that may be continuing at the present time. It is not outside the bounds of possibility that the next climbing party may have a few more feet to go to reach the top!'
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|Comment:||Archive: Maps: sketch map of Mount Everest, 1925.(WORLDWATCH)|
|Article Type:||Brief article|
|Date:||Jun 1, 2017|
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