Metamorphic rock
Upcoming SlideShare
Loading in...5
×
 

Metamorphic rock

on

  • 1,869 views

 

Statistics

Views

Total Views
1,869
Views on SlideShare
1,869
Embed Views
0

Actions

Likes
2
Downloads
42
Comments
0

0 Embeds 0

No embeds

Accessibility

Categories

Upload Details

Uploaded via as Microsoft PowerPoint

Usage Rights

© All Rights Reserved

Report content

Flagged as inappropriate Flag as inappropriate
Flag as inappropriate

Select your reason for flagging this presentation as inappropriate.

Cancel
  • Full Name Full Name Comment goes here.
    Are you sure you want to
    Your message goes here
    Processing…
Post Comment
Edit your comment

Metamorphic rock Metamorphic rock Presentation Transcript

  • Metamorphic rock
  • Vocabulary
    • _________- change in rock due to heat and pressure
    • __________- has a banded appearance
    • __________- does not have a banded appearance
    Metamorphism foliated non-foliated
  • Let us review
    • We already learned
      • There are three types of rocks
        • Igneous rocks-
          • Igneous – “rock from fire”
            • Made by molten rock (magam and lava) that has cooled down
        • Sedimentary rocks
          • Sedimentary rocks – settled rocks
            • Pieces of rocka nd other particles get put together to form rock
        • Metamorphic rock
          • We shall see………………………..
  • From what materials are metamorphic rocks made?
    • The easy answer is from ALL rocks
      • Whether it is
        • Sedimentary
        • Igneous
        • Metamorphic
      • It is a recrystallization of unmelted
      • ALL of them can form into metamorphic rocks under the right conditions
  • What are the right conditions to form metamorphic rocks?
    • Heat and pressure
      • Therefore metamorphic rocks primarily can only be formed deep in the Earth’s crust
      • OR
      • Contact metamorphism – this is when it forms because it is near a magma flow
        • It gets the heat it needs from the magma
    • Metamorphic rocks can change
      • Shape
      • Texture of the original rock
      • Mineral composition
    • Sometimes scientists can sometimes tell What the original rock was and other times they can’t
      • The orginal rock is called Parent Rock
  • When do we see metamorphic rock? When the earth’s surface erodes or weathered the metamorphic rock is exposed
  • How can I tell the difference between metamorphic rocks?
    • Metamorphic rocks are usually harder and more dense
    • Original layers commonly get bent or distorted
    • It may also show foliation
      • The alignment of minerals or separation of different minerals into flaky layers or light and dark bands
  • Foliation vs. Non foliation
    • A fantastic way to classify metamorphic rock
      • Foliation is very big indicator of metamorphic rocks
      • Non- foliation are classified by composition (what they are made up of)
  • Banding
    • Different minerals give metamorphic rocks a striped appearance
      • separated of light and dark minerals into layers
        • The more pressure and higher temperature and pressure the thicker the band
  • Distorted structure
    • Is folding or bending of rock layers
      • This occurs do to strong Earth forces
      • Causing the rock to have deformed appearance
  • Regional Metamorphism
    • Makes the most of the metamorphic rock
      • This is caused by the pressure that occur with mountain building
  • Let’s review