Balochistan
Plateau East of the Sulaiman and Kirthar
ranges lies the Balochistan Plateau with
an average altitude of 2,000 ft.(610 m).
The physical features of the plateau are
very varied, but mountains, plateaus and
basins predominate the scene. The
Mountains spread in various directions,
attaining height 6,000- 11,000 ft.
(1,830-3,335 m).
In
the north are the Toba Kakar Range and
Chagai hills which form the border of
Pakistan with Afghanistan for some
distance. In the west-central part is the
Siahan Range and in the east-southern
corner the Mekran Range. Except for the
Toba Kakar Range, which is dotted here and
there with juniper, tamarisk and pistachio
trees, all other ranges are naked and
bleak. The mountains are carved off by
innumerable channels and hill torrents
which contain water only after rains. Very
little water, however, reaches the basins
lying on their foot. Comparatively more
important rivers are Zhob, Bolan and Mulla,
located in the north-eastern portion of
Balochistan.
The
valleys of the main streams and their
tributaries exhibit similar feature and
consist of flat plains of alluvial soil in
the centre, with a pebbly slope of varying
length rising on either sides of the
mountains. It is from these pebbly beds
that the supply of water for irrigation is
chiefly obtained through Karezes. Zhob,
Bloan and their tributaries have formed
two important alluvial basins of
Balochistan, namely, the Lorlai basin and
Quetta basin, which together produce a
major portion of Balochistan's crops and
fruits: wheat, barley, maize, lucerne,
potato, apple, apricot, peach,almond,
grape and pomegranate. Kalat Plateau at
7,000-8,000 ft. (2,135-2,440 m), in the
centre of Balochistan is the most
important plateau.
The
largest desert is found in western
Balochistan. This is an area of inland
drainage and dry lakes (hamuns), the
largest of which is Hamun-i-Mashkhel,
which is 54 miles long and 22 miles wide.
The surface is littered with sun-cracked
clay, oxidized pebbles, salty marshes and
crescent-shaped movisng sand dunes. The
area is known particularly for its
constant mirage and sudden severe
sand-storms. Being outside the sphere of
monsoon current, Balochistan receives
scanty and irregular rainfall (4 inches);
the temperature is very high in summer and
very low in winter.
Owing to continuous draught, there is very
little vegetation. Most of the people,
therefore, lead nomadic life, raising
camels, sheep and goats. Balochistan is,
however, fortunate to have considerable
mineral wealth of natural gas, coal,
chromite, lead, sulphur and marble. The
reserves of natural gas at Sui are among
the largest in the world. The gas is piped
to Karachi, Hyderabad, Sukkur, Multan,
Faisalabad, Lahore, Rawalpindi and Quetta
for use as industrial power.