Its basic feature is the same as those of the glacio-marine diamictite of Gondwana facies in the southern Qinghai-Tibet Plateau.

The glacial gravel has high strength but couldn t be compacted easily;the filling materials made of glacial gravels in Jiangpinghe CFRD are compacted by impulsive vibro-roller,the compacted lift reaches 120 cm and the compactness is greatly improved;so the consturction progress of the dam is quickened and the cost is cut down.

In view of negativity of Quaternary glaciation from eastern China, the author suggests; (l) not to use climatostratigraphic classification for Quaternary system in eastern China, (2) to use the term of diamictite instead of till in lithostratigraphic units,(3) Geographic names should be derived from permanent natural or artifical features which the stratigraphic unit is present.

he sedimentary characteristics of diamictites(so-called red beds) in the study area are fully studied for the first time.

The Luoquan Formation, in which the origin of diamictites has long been subject of controversy, occurs at the top of the Late Precambrian along the southern margin of the North China Platform.