1. What is the term for the textures displayed by these two hornfels rocks on figure 3 below? 2. What type of metamorphism do these textures on figure 3 represent? Biotite Perthite Quartz Andalusite A) Figure 3 Cordierite Sillimanite 0 mm 0.2 Plagioclase Pyroxene B) Hi Fe-Ti oxide 8543

1. What is the term for the textures displayed by these two hornfels rocks on figure 3 below? 2. What type of metamorphism do these textures on figure 3 represent? Biotite Perthite Quartz Andalusite A) Figure 3 Cordierite Sillimanite 0 mm 0.2 Plagioclase Pyroxene B) Hi Fe-Ti oxide 8543

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

Problem 1LR

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Question

1. What is the term for the textures displayed by these two hornfels rocks on figure 3 below?
2. What type of metamorphism do these textures on figure 3 represent?
Battle
Quartz
22
Perhite
A)
Figure 3
h
Condiente
Sillimanite
Pyroxene
B)
re-Ti
B

Expert Solution

Step 1

1. Nodular texture of cordierite porphyroblast that developed at the time of thermal overprinting can be observed in figure 3B. The progressive thermal metamorphism of slate can be observed in figure 3A. Both the figures 3A and 3B show porphyroblastic texture.