Figure 3. This photograph shows that other processes have affected these rocks since they were deposited. Much of the layered material is broken up into fragments of different size. Surrounding these blocks is migmatite, a granular quartz and feldspar rock that results from the melting in place of metamorphic rocks like these. The migmatite is additional evidence of the intense heat that affected these rocks which may be related to younger intrusions in the area.
Last updated on June 7, 2006