The tuffaceous blanketed the entire basin . 凝灰岩充填着整个盆地。
The tuffaceous formation, isolated remnants, are about 200-250 ft thick . 凝灰岩构造的局部残存段的厚度约为200-250。
The concept holds that uranium is leached by groundwater from tuffeceous rocks . 该理论认为,来自凝灰岩的地下水淋蚀铀。
They reported the abnormal uranium content of waters issuing from tuffaceous rocks . 他们发现,从凝灰岩中流出的水中铀含量反常。
The machadodorp tuff and agglomerate, which is higher-lying than the ongeluck lave, is known only from the eastern transvaal . 层位较昂格鲁克岩流为高的马却多多普凝灰岩及集块岩,只见于德兰士瓦东部。