soil accumulation

Only a few interior valleys and coastal strips are flat enough for soil accumulations of consequence, however.

During the rest of the year there is no water deficit because evaporation is amply covered with rain and soil accumulation.

The flooring was damp; the bases of the pillars were nearly covered and out of sight because of soil accumulation.

Many of the basins are self-contained, meaning that they drain internally and are areas of water and soil accumulation.

A lot were completely buried under normal soil accumulation; they were only found because they sat in the middle of those huge craters and archaeologists knew where to dig."