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Gttt Essay

  • Submitted by: airf10
  • on September 19, 2012
  • Category: English
  • Length: 3,213 words

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Below is an essay on "Gttt" from Anti Essays, your source for research papers, essays, and term paper examples.

Essentials of Geology, 3rd edition
2009, by Stephen Marshak © W. W. Norton & Company

Chapter 7 Metamorphism: A Process of Change

Essentials of Geology
3rd Edition Chapter 7 Norton Media Library

Metamorphism: A Process of Change

Prepared by:

Ronald Parker, Senior Geologist
Fronterra Geosciences
Houston, Oklahoma City, Denver, Anchorage, Dallas, Midland, Aberdeen, Vienna, Buenos Aires, Neuquén www.fronterrageo.com

Introduction
 

Metamorphic – Changed from an original parent.
  Meta   Morph

= Change. = Form or shape.

Parent rocks are called protoliths.   Metamorphism can occur to any protolith.
 

Essentials of Geology, 3rd edition, by Stephen Marshak

Chapter 7: Metamorphism: A Process of Change

PowerPoint slides prepared by Ronald L. Parker, Fronterra Geosciences, 700 17th Street, Suite 900, Denver, CO, 80202

1

Essentials of Geology, 3rd edition
2009, by Stephen Marshak © W. W. Norton & Company

Chapter 7 Metamorphism: A Process of Change

Introduction
 

Protoliths undergo pronounced changes in…
  Texture.   Mineralogy.

 

Due to changes in…
  Temperature.   Pressure.   Tectonic   Reaction

stress. with heated water.

Essentials of Geology, 3rd edition, by Stephen Marshak

Chapter 7: Metamorphism: A Process of Change

Metamorphic Character
 

Metamorphic rocks have distinctive properties.
  Unique   Unique

texture – Intergrown and interlocking grains. minerals – Some that are only metamorphic.   Unique foliation – A planar fabric from aligned minerals.
 

These transformations can change the rock completely.

Essentials of Geology, 3rd edition, by Stephen Marshak

Chapter 7: Metamorphism: A Process of Change

Metamorphic Processes
Metamorphic change occurs slowly in the solid state.   Several processes are at work.
 
  Recrystallization

– Minerals change size and shape.

  Phase

change – New minerals form with…
Kyanite

 Same chemical formula....

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  • Submitted by: airf10
  • on September 19, 2012
  • Category: English
  • Length: 3,213 words
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