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same rock as the globes in front of Benson). a. What kind of fault rock is this? b. How did it form? c. Do you see any strain gradients in the sample? d. This rock cut approximately perpendicular to the foliation and parallel with the stretching lineation. Why is this important and what kind of information can be ascertained from this view?

same rock as the globes in front of Benson). a. What kind of fault rock is this? b. How did it form? c. Do you see any strain gradients in the sample? d. This rock cut approximately perpendicular to the foliation and parallel with the stretching lineation. Why is this important and what kind of information can be ascertained from this view?

Applications and Investigations in Earth Science (9th Edition)
Applications and Investigations in Earth Science (9th Edition)
9th Edition
ISBN:9780134746241
Author:Edward J. Tarbuck, Frederick K. Lutgens, Dennis G. Tasa
Publisher:Edward J. Tarbuck, Frederick K. Lutgens, Dennis G. Tasa
Chapter1: The Study Of Minerals
Section: Chapter Questions
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2. The protolith of this rock is the Proterozoic Silver Plume Granite (the same rock as the globes in front of Benson). a. What kind of fault rock is this? b. How did it form? c. Do you see any strain gradients in the sample? d. This rock cut approximately perpendicular to the foliation and parallel with the stretching lineation. Why is this important and what kind of information can be ascertained from this view? e. What is the mineralogy of this rock? f. Can you bracket the temperatures under which the rock was deformed? g. Describe the texture and mineralogy of what the undeformed Silver Plume should be (either in the globes or in the provided sample). Are there fabric elements in the protolith that you observe in the deformed sample?
Transcribed Image Text:2. The protolith of this rock is the Proterozoic Silver Plume Granite (the same rock as the globes in front of Benson). a. What kind of fault rock is this? b. How did it form? c. Do you see any strain gradients in the sample? d. This rock cut approximately perpendicular to the foliation and parallel with the stretching lineation. Why is this important and what kind of information can be ascertained from this view? e. What is the mineralogy of this rock? f. Can you bracket the temperatures under which the rock was deformed? g. Describe the texture and mineralogy of what the undeformed Silver Plume should be (either in the globes or in the provided sample). Are there fabric elements in the protolith that you observe in the deformed sample?
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