Southern Tibet : vol.7 / 314 ページ（カラー画像）

0314	Southern Tibet : vol.7
南チベット : vol.7

0314

Southern Tibet : vol.7

南チベット : vol.7

198

had found the previous year at Tertse in lower Nubra, — as well as from the
deposits in the Kardong valley, he comes to the conclusion that a big lake has
occupied these valleys and that, on account of the great height, it »must have
extended up the Tanktse valley, almost as far as the low pass by which that district
is separated from the Pangong lake».¹

A mile from Panamik are the hot springs once visited by MOORCROFT.

To the south of Panamik the rocks of Nubra are chiefly black slate, but transported
blocks of granite are everywhere common, and at that village the latter rock descends to
the level of the river, and continues to form the whole mass of the mountains on the left
side of the valley so far as I continued along it. On the right side there were indications
of stratification on the steep sides of the mountains, and, from the colour, the rock there
appeared to be partly granite and partly metamorphic slate.

He left Taksha in the Nubra valley August 9th, and observed, always opposite
to ravines, how the alluvial platforms were covered with enormous boulders, which
he believed were brought there by glaciers. At Changlung, where the merchants'
road to Yarkand leaves the Nubra valley, he observes: »In the direction of the
valley, which was still north-north-west, very lofty mountains were visible at no great
distance, all with snowy tops, and generally with heavy snow-beds and glaciers in
their hollows; and according to the statement of my guides, the river at the distance
of less than two days' journey issues from beneath a glacier, by which all passage
is stopped.» To this he adds a note stating that, two months later Captain STRACHEY
ascended the same valley till he was stopped by the glaciers which appeared to be
on a »still more gigantic scale than those of the Shayok to the eastward».

The range between the Nubra and the Shayok, Thomson found to be bare
granite rock, and near the glacier »granite was everywhere the prevailing rock».
From old moraines he could see that the glaciers had at some former period ad-
vanced much farther than they did in 1848.

The height of the Sassar Pass (Saser-davan) he estimated at 17,600 feet.
»From Sassar not more than three or four miles of the upward course of the river
were visible, but within that distance three glaciers were in sight. Two of these
stopped short of the valley while the third, which was at the most distant point
visible, appeared to descend to the river.»²

Thus Thomson affords us a proof that the Kumdan-glaciers, or at any rate one
of them, stopped the Shayok road in 1848. Therefore he had to go the roundabout
road »called by the Turki merchants, Murgai, by the Tibetans, Murgo-Chumik».

At Murgo he first ascended a platform of conglomerate, where the ground was
strewn with fragments of limestone, evidently derived from the mountains above.

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