The delta deposit characterizing short basin growth time (it's mainly concentrated onto Quaternary), short lithogenous time and low lithogenous level forms an excellent accumulation condition here.
盆地发育时间短(主要集中在第四纪)、成岩时间短、成岩程度低的三角洲沉积形成了这里优越的聚集条件。
2
A large U-Mo deposit was found on the northern margin of north China Platform, where the Mesozoic and Cenozoic volcanics are developed. This area is widely covered by the Quaternary sediments.
在华北地台北缘中新生代火山岩发育区，发现大型铀钼矿床，其外围被第四系广泛覆盖。
3
The basin was filled with thick sediments of Quaternary lake and alluvial facies and accumulated with tin placer which is locally enriched to be commercial deposit.