Question

What type of mechanical weathering is shown in this picture of granite? (Remember that granite is formed deep in the crust, and then exposed at the surface by erosion removing the overlying rocks.)

A. Tree roots wedging
B. Ice wedging
C. Hydrolysis
D. Sheeting

Answer 1

Sheeting is the type of mechanical weathering shown in the picture of granite, a process that occurs when overlying rocks are eroded away and the pressure on the granite is released.

Step-by-step explanation:

The type of mechanical weathering shown in the picture of granite is sheeting. Granite is formed deep in the Earth's crust and is exposed at the surface through the process of erosion, which removes the overlying rocks.

This exposure leads to a reduction in confining pressure, causing the rock to expand and fracture parallel to the surface in a process known as exfoliation or sheeting.

This can be seen in the Enchanted Rock State Natural Area in Texas, where granite domes display this characteristic weathering pattern.