The layers at the base of the mountain contain clays and sulfates , both known to form in water .
山峰底部的层叠物中还含有粘土和硫酸盐,这两类物质都是在水的作用下才能形成。
There are liquid clays , springs , hard rocks , and those soft and deep quagmires which special science calls moutardes .
有稀粘土,有活水泉,有坚石,有软而深的淤泥?科学的专门名词称之为芥末。
It has deposits in two regions : inner mongolia , where rare earths are a by-product of iron-ore production , and in the south of the country , where they are found in various clays .
And he says the structure of the clays in the sediments he studied is indicative of soil that has metamorphosed under great pressure . Retallack says the soil would have originally formed at the surface 500 million years ago before being buried 5 kilometres underground and then being uplifted again to the surface .
Starting at that depth we encountered curious , round , ball-like mounds made of different colored clays - black , brown , tan , light buff - that we could clearly distinguish and that formed a fill 80 centimeters thick .