By Bruce Spangenberg Soils are the foundation of gardens and landscapes, featuring characteristics that vary among locations ...

A new study in Chile shows how small differences in rock type can drive large differences in erosion, vegetation, and river networks, illuminating the role of mineralogy in shaping landscapes.

The bulk of soil is made up of a mixture of organic matter, rock and mineral particles ... this is brown and crumbly in texture and similar to that found on well-worked allotments.

Soil contains mineral particles, air, water, living organisms and decaying organic matter. The mineral portion of the soil contains tiny fragments of rock which have been broken ... in a soil is ...