摘 要: | In the north-western part of Szechwan Basin is the famous Chengtu Plain,with an area of 8,000 sq. km. and at 500-700 m. above the sea level. It is a huge alluvial plain formed by cohesion of many alluvial fans, among which the Minking fan is the largest, constituting 2/3 of the area of Chengtu Plain.
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