SPHEROIDAL WEATHERING
Spheroidal weathering (a.k.a. exfoliation)
results in the rounding off of corners and sharp edges of rock masses. It
tends to occur in intrusive igneous rocks (e.g., the exfoliation
domes in the Yosemite Valley area, California, USA) and some massive
sandstones (e.g., Arches
National Park, Utah, USA).
Spheroidal weathering in diabase, a mafic intrusive igneous rock, from Haverstraw,
southeastern New York State, USA.