In a general way these sea-bottom soils resemble those formed in the alluvial plains.
Now nearly all rivers contain some small percentage of salt, which forms a distinct ingredient in alluvial plains.
The Shan-Burmese inhabit the valleys and alluvial plains on each side of the river.
Sumatra has also been evidently much increased in size by the formation of alluvial plains along its northeastern coasts.
Valley trains have all the characteristics of alluvial plains built by rapid waters carrying heavy loads of detritus.
The father of Jefferson Davis was one of those who tried their luck in the alluvial plains of the lower Mississippi.
The alluvial plains formerly supported hardwood forests, while the hill slopes and uplands were largely prairie.
The alluvial plains on the side appeared fertile, and it is supposed that they are well adapted to the growth of corn.
Since then alluvial plains have filled this estuary to even beyond the original mouth.
On the coast we find either low, flat, alluvial plains, or an undulating country broadening to the north.