Check and double-click the Half Dome placemark. Depending upon your monitor set-up, you may need to zoom in to see more detail. The main weathering process that has formed Half Dome is .

exfoliation

Explanation:

The weathering that caused the creation of Half Dome is called exfoliation. This type of weathering occurs with the progressive wear and tear of the rock, which falls into a "cascade" creating faces in its composition that resemble cliffs.

As you may already know, weathering is the physical and biological chemical process that imposes factors that erode the original rock, to create the soil and geological landscapes.