Es9

421 views
326 views

Published on

Published in: Business, Technology
0 Comments
0 Likes
Statistics
Notes
  • Be the first to comment

  • Be the first to like this

No Downloads
Views
Total views
421
On SlideShare
0
From Embeds
0
Number of Embeds
11
Actions
Shares
0
Downloads
3
Comments
0
Likes
0
Embeds 0
No embeds

No notes for slide

Es9

  1. 1. Metamorphic rocks<br />
  2. 2. Definition<br />Metamorphic rocks: rocks that have been modified by heat, pressure and chemical process .<br />Usually deep within the earth<br />
  3. 3. slate<br />
  4. 4. shale<br />
  5. 5. Slate vs. shale<br />Slate and shale look similar, yet are different.<br />
  6. 6. Gneiss (nice!)<br />
  7. 7. granite<br />
  8. 8. marble<br />
  9. 9. limestone<br />
  10. 10. quartzite<br />
  11. 11. sandstone<br />
  12. 12. Specific changes<br />Large areas of rock are under intense heat and pressure.<br />Rocks are already under high temperature. <br />Friction of moving layers adds heat. <br />
  13. 13. Foliation <br />When shale undergoes intense pressure, the minerals are formed into parallel layers.<br />This process is called foliation. <br />Shale -&gt; slate -&gt; phyllite -&gt; schist <br />
  14. 14. phyllite<br />
  15. 15.
  16. 16. Contact metamorphism<br />Hot magma forces its way into overlying rock.<br />Hot liquids and gases from magma also enter rock and react with its minerals. <br />
  17. 17.
  18. 18. Rock cycle<br />1. igneous rocks are formed from magma<br />2. Igneous rocks erode (wear out) by weathering, forming sediments.<br />3. Sediments form sedimentary rocks.<br />4. If sedimentary rocks are buried deep and are involved in movements of earth’s crust, they become metamorphic rocks. <br />5. If rocks are forced deep enough, they reach such high temperatures that they become magma. <br />
  19. 19. Rock cycle<br />

×