Geology Archives | Page 9 of 9

Slaking or Wetting and Drying Weathering

Wetting and drying or slaking is an example of mechanical or physical weathering. It occurs when rocks exposed to the

Dunite is an ultramafic plutonic or intrusive igneous rock in which olivine exceeds 90% by volume. Ultramafic means it has

Pyroxenite is coarse-grained ultramafic, mostly plutonic rock. Ultramafic means they have at least 90% dark-colored minerals rich in iron and

Felsic magmas and lavas are proportionately higher in lighter elements like oxygen, silicon, aluminum, sodium, or potassium and lower in

Mafic magmas and lavas are the most common on Earth. The other relatively common ones are intermediate and felsic. Lesser