1. Examine the photomicrograph in Fig. G-53. Describe the principal microstructures in the quartz and the feldspar, and interpret the deformation mechanisms that led to these microstructures.

2. What is the approximate range of temperatures experienced by this rock? How do you know?

3. Onthe photomicrograph, label all of the kinematic indicators you can find. What is the sense of shear recorded by these kinematic indicators?

Transcribed Image Text:

Description of principal microstructures in quartz and feldspar and interpretation of mechanisms: Approximate range of temperatures and evidence: Sense of shear: Fig. G-53 Photomicrograph for use in Problem 16.6. F, feldspar; Q, quartz. Plane polarized light. Scale bar is 0.5 mm.