Southern Tibet : vol.7 / 494 ページ（カラー画像）

0494	Southern Tibet : vol.7
南チベット : vol.7

332

Richthofen had correctly made the Koko-shili and Bayan-khara-ula as parts of one and
the same fold. North of Odon-tala we find on his maps a nameless range, and north
of it Shuga and Burkhan-Buda. The range south of Koko-nor Range by Prshevalskiy. South of the
Gebirge»; it was called Southern Koko-nor Range by Prshevalskiy. South of the
Koko-shili-Bayan-khara fold Richthofen had only two more folds and then follows the
artificial construction of four great ranges, running S. W. to N. E. The western-most
of them is the Tang-la. All four are cut through by the upper courses of the rivers.
West of Tengri-nor is a short parallel range, the one which comes in contact with
the eastern end of Aling-gangri. This range and the S. W. part of the Tang-la are, as
it were, cut by the Nien-chen-tang-la. We have seen that SAUNDERS in this region has
three tremendous ranges, more enormous than even those of Richthofen. He even goes
so far as to make Himalaya continue uninterruptedly, to the N. E., and to make the
Yunling Mountains of western China practically one and the same fold as the Himalaya.

On his map¹ Richthofen has two Kara-korum Ranges. Between them and the
Kwen-lun there are two more which he obviously regards as belonging to the Kara-
korum System. The Aling-gangri Range may be said to be the prolongation of his
southern-most Kara-korum. In spite of a fairly long gap between the two, this view
is, so far as I can see, correct, although new exploration has to solve the problem
definitely. Richthofen's northern Kara-korum has no continuation at all in the interior
of Tibet. It begins from the Kara-korum Pass and stretches S. E. to 80°. Therefore,
of course, Richthofen never suspected that it could have anything whatever to do
with HUC'S Tang-la far in the east.

Between his southern Kara-korum and the Indus there are four ranges, the
two northern of which he calls the Dapsang Ranges. In their immediate prolongation
the southern Aling-gangri Ranges are situated. All these Kara-korum and Dapsang
Ranges, Richthofen regards as belonging to the Himalayan System.

Looking at Tibet as a whole we see that Richthofen gives it a triangular shape,
where his »Hochland von Khor» is bounded by the parallel ranges of these mighty
systems, the Kwen-lun, the Himalaya and the Tang-la or Sinian System.

The exploration which has taken place since his great work was published, or
since 1877, has proved that this view is correct only so far as the Kwen-lun and Hima-
laya are concerned. In the east, where so much work is still left to be done, Richthofen's
Sinian System will disappear altogether. Instead of the complicated and irregular
construction he gave to these regions, we will find that the whole of Tibet is one
single and rather regular system of folds, a »Faltenland» as the Germans say, and
that this regularity continues the whole way to the east, where the mountain folds
turn down to the S. E.

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