Southwestern Virginia Case Study

S5 Cranberry Gneiss (Paragneiss)

Elizabeth Johnson

Outcrop and Hand Sample Photos and Videos

Click on the image to enlarge.

This is a quartz-rich paragneiss.  Can you see the foliation in the outcrop?

 

Thin Section Photos and Videos

Click on the image to make it larger. 1st = plane polarized light; 2nd = cross-polarized light.

Spot 1

Quartz porphyroclast in fine-grained quartz matrix.  What type of quartz textures do you see in the following images?

Spot 2

 

Entire thin section scan. 1st = ppl; 2nd = xpl. Click on the image to make it larger.

Media Attributions

  • OLYMPUS DIGITAL CAMERA
  • OLYMPUS DIGITAL CAMERA
  • S5 Cranberry 4x ppl no1
  • S5 Cranberry 4x xpl no1
  • S5 Cranberry 4x ppl no2
  • S5 Cranberry 4x xpl no2
  • A4 Mylonite 1 ppl
  • S5 Cranberry xpl

License

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Introduction to Petrology by Elizabeth Johnson is licensed under a Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International License, except where otherwise noted.

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