Where is there weathering on half dome in yosemite?

The most obvious weathering on Half Dome in Yosemite is the exfoliation dome, which is a large, smooth, rounded mass of rock that has been exposed by the erosion of the surrounding rock. The exfoliation dome is the result of the weathering of the granite rock that makes up Half Dome. This granite is composed of interlocking crystals of quartz, feldspar, and mica. Over time, the feldspar and mica crystals in the granite have been weathered away by water, wind, and ice, leaving behind the more resistant quartz crystals. These quartz crystals form the smooth, rounded surface of the exfoliation dome.