Uranium mineralisation occurs in coarse sandstones between clay horizons within a braided channel system with apparent tabular and roll front deposit characteristics.
铀矿化带出现在粗粒砂岩内，其介于粘土层之间，位于网状河道体系内，具有明显的板状和卷状矿床特征。
2
By measuring how many of these meteorites fall to Earth over a given period of time, scientists can estimate how long it might have taken to deposit the observed amount of Ir in the boundary clay.
通过确定在一段给定时间内掉落在地球上的这种陨石的数量，科学家们就可以确定沉积隔层粘土的形成时间。
3
Standing about 15 minutes (if floats, can be placed in a water bath heating Clay oven rolls, the sink), and then the deposit will be moved to the crucible clean and dry.