Metamorphic Rocks - PowerPoint PPT Presentation

About This Presentation
Title:

Metamorphic Rocks

Description:

Metamorphic Rocks Everything Changes Metamorphic = Change (notes) Heat and/or pressure, over long periods of time, changes existing rock into new rock. – PowerPoint PPT presentation

Number of Views:185
Avg rating:3.0/5.0
Slides: 14
Provided by: L362
Category:

less

Transcript and Presenter's Notes

Title: Metamorphic Rocks


1
MetamorphicRocks
  • Everything Changes

2
Metamorphic Change (notes)
  • Heat and/or pressure, over long periods of time,
    changes existing rock into new rock.

3
Regional Metamorphism (notes)
  • Change caused by rocks being buried deep
    underground.
  • Subduction Zones.
  • Heat and pressure are created by the weight of
    rocks above.
  • As rocks are compressed and heated , mineral
    structure and texture may change.

4
Regional Metamorphism (notes)
  • So long as the rock
  • does not melt,
  • it is classified as a metamorphic rock.
  • If it melts and becomes magma, it is an igneous
    rock

5
Regional Metamorphism
  • As the rock is squished, the minerals re-align
    to become foliated
  • How it happens.

6
Contact Metamorphism (notes)
  • Formed when existing rocks come into contact with
    magma.
  • The super hot magma bakes the surrounding rock.

7
Contact Metamorphism
8
(No Transcript)
9
A brand new rock (notes)
  • Chemical composition of the new is the same as
    the old rock,
  • BUT
  • The metamorphic rock is
  • Harder
  • More compact
  • Crystalline

10
Common Metamorphic Rocks (notes)
  • Sandstone Quartzite
  • Shale Slate
  • Limestone Marble
  • Granite Gneiss

11
Common Metamorphic Rocks
Sandstone
Quartzite
12
Common Metamorphic Rocks
  • Shale
    Slate

13
Common Metamorphic Rocks
  • Limestone Marble
Write a Comment
User Comments (0)
About PowerShow.com