Endemic fluorosis is very serious in the Yellow River alluvial plain area in Shandong province.
山东黄河冲积平原区是山东省地氟病的重病区，危害严重。
The sampling sites with relatively lower PAHs concentrations were from north mountainous area of Hebei and alluvial plain of northwestern Shandong.
而浓度低值点一般位于河北省北部包括张家口和承德北部地区以及山东西北部的冲积平原地带。
Alluvial fan facies, braided stream delta facies and flooded plain facies are developed in Kongdian Formation of Bamianhe area.
八面河地区孔店组存在冲积扇、辫状河三角洲和洪泛平原相。
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