THE PLEISTOCENE GEOMORPHOLOGY OF THE SOUTH-EASTERN PART OF THE PESHAWAR VALE
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Date
1995
Journal Title
Journal ISSN
Volume Title
Publisher
DEPARTMENT OF GEOGRAPHY
Abstract
Peshawar valley is located on the junction of the
Indo-Pakistan platform and the Asian shield. The geological
evolution of the valley has taken, a long time period, of
about 20 myr, from the middle of the Cenozoic, to the
beginning of the Pleistocene. However, the final
configuration was achieved, during the later phases of the
Himalayan orogeny. Since then, it has passed through
several phases of erosion and deposition. The deposits on
the surface as well as in the sections, preserve a good
record of environmental changes.
The study area lies in the south-eastern part of
the valley. Its surface deposits include fan-gravels,
river-gravels, medium-grained sand, thick deposit of loess
and fine alluvium. The deposits on the surface reflect the
preparation of deep regolith on the Attock-Cherat range,
due to the growth of vegetation, in pluvial environment,
and its subsequent deposition in the foot ef the mountain
range, as alluvial fans, in moderately arid to semi-arid
climate. The deposits also record flood of low to moderate
magnitudes, and periglacial environment, during the
Pleistocene period.