Why do granite domes assume a rounded shape​

The solidified magma chamber - called a pluton - was then exposed by uplift and erosion of the overlying rock. As the overlying rock eroded, the confining pressure on the pluton was removed and a type of weathering called exfoliation slowly created the more rounded appearance of the dome.

The zhou dynasty (1046-256 bce) was the longest-lasting of china's dynasties. it followed the shang dynasty (c. 1600-1046 bce) and it finished when the army of the state of qin captured the city of chengzhou in 256 bce.