If so, the thickness of the alluvium is at least 1800 ft., and may be much more.
Here I had an opportunity of seeing the material of which the alluvium is composed.
Strata intersected by a trap dike, and covered with alluvium.
It would be interesting to know the thickness of the alluvium.
This growth rarely takes place from the waste of the bed rocks on which the alluvium lies.
An alluvium deposited by the waves of Time in the human soul, and which becomes the basis of psychological Mont Blancs.
The granite of this round world lies underneath, and the alluvium settles on the surface.
This soil, though not equal to the alluvium, or to the basaltic land, is much better than glacial precipitate usually is.
Only in the most highly favored places where a small bench or a patch of alluvium occurs may one find even an isolated dwelling.
Great alterations are often produced by alluvium—deltas and whole islands being often formed by this cause.