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The ancient city gates and well-preserved city walls with signs of erosion seem to be telling of the beautiful legends in ancient times.

This fracture was formed at the middle of Archeozoic era, and then began to control the depositions and erosions of the both sides.

In the last hundred years, the wind has worn the rocks away.

The reservoirs were uplifted to be exposed and be denuded and were changed into the present oil sands finally during the Himalayan movement.

above the arch there was a long bas - relief carved in harder stone , with worn and blackened figures representing the four seasons.

A Degradation - A general and progressive lowering of the longitudinal profile of the channel bed as a result of long-term erosion.

One of tile latter exploration focuses on exactly identifying mini-faults and nip-out line in stratigraphic reservoirs.

Based on isostasy principle, this paper made out a correction method for the calculation of disconformity erosion amount.

by the exposion and declination in the Jurassic, forming the widespread coal-bearing strata which can be correlated.