Movement of Rock Builds Mountains Pages 137-144 (section B)
MOST MOUNTAINS FORM ALONG PLATE BOUNDARIES  <ul><li>A shallow sea once covered  Mt. Everest </li></ul><ul><ul><li>Rocks co...
What is a Mountain? <ul><li>Mountain - an area of land that rises steeply from the land around it. </li></ul><ul><ul><li>A...
MOUNTAIN RANGES   Mountain Range - long line of mountains formed at about the same time by the same processes
MOUNTAIN BELTS   <ul><li>Mountain Belt - ranges that are close together. </li></ul><ul><ul><li>Most major mountain belts a...
MOUNTAINS, ROCKS, AND SEDIMENT   <ul><li>On the surface, water and wind break rocks apart and move the pieces away. </li><...
Mountains over Time <ul><li>Young mountains are tall and steep.  </li></ul><ul><li>Eventually water and wind take over, an...
Mountains over Time <ul><li>The land becomes flatter as mountains wear down and valleys are filled with sediments.  </li><...
MOUNTAINS CAN FORM AS ROCKS FOLD   <ul><li>Tectonic plates move only a few cm a year.  </li></ul><ul><li>Edges of a contin...
FOLDED MOUNTAINS <ul><li>Folded Mountains - mountains formed when continental crust crumples and bends into folds.  </li><...
Himalaya Mountain Forming Process   <ul><li>The Himalaya belt formed by a collision between India and Eurasia  </li></ul><...
MOUNTAINS CAN FORM AS ROCKS MOVE ALONG FAULTS   <ul><li>Fault-Block Mountains - form as blocks of rock move up or down alo...
Fault-Block Mountain Range Formation <ul><li>The Sierra Nevada in California is a fault-block mountain range  </li></ul><u...
<ul><li>http://www.pond5.com/stock-footage/909732/mountain-formation.html </li></ul>
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5.1Movement of Rock Builds Mountains

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5.1Movement of Rock Builds Mountains

  1. 1. Movement of Rock Builds Mountains Pages 137-144 (section B)
  2. 2. MOST MOUNTAINS FORM ALONG PLATE BOUNDARIES <ul><li>A shallow sea once covered Mt. Everest </li></ul><ul><ul><li>Rocks containing remains of ocean animals found there. </li></ul></ul><ul><ul><li>Rocks formed at a far away spreading center also found there. </li></ul></ul>
  3. 3. What is a Mountain? <ul><li>Mountain - an area of land that rises steeply from the land around it. </li></ul><ul><ul><li>A single mountain is rare. </li></ul></ul>
  4. 4. MOUNTAIN RANGES Mountain Range - long line of mountains formed at about the same time by the same processes
  5. 5. MOUNTAIN BELTS <ul><li>Mountain Belt - ranges that are close together. </li></ul><ul><ul><li>Most major mountain belts are located along tectonic plate boundaries </li></ul></ul><ul><ul><li>Some, like the Appalachians, are on the interior of the plates </li></ul></ul><ul><ul><li>These were formed by ancient plate collisions that formed the continents </li></ul></ul>
  6. 6. MOUNTAINS, ROCKS, AND SEDIMENT <ul><li>On the surface, water and wind break rocks apart and move the pieces away. </li></ul><ul><li>As long as mountains are pushed up faster than they wear down, they grow taller. </li></ul>
  7. 7. Mountains over Time <ul><li>Young mountains are tall and steep. </li></ul><ul><li>Eventually water and wind take over, and over time the mountains become rounded hills. </li></ul>
  8. 8. Mountains over Time <ul><li>The land becomes flatter as mountains wear down and valleys are filled with sediments. </li></ul><ul><li>If tectonic plates stopped moving, eventually the surfaces of the continents would be completely flat. </li></ul>
  9. 9. MOUNTAINS CAN FORM AS ROCKS FOLD <ul><li>Tectonic plates move only a few cm a year. </li></ul><ul><li>Edges of a continent along a convergent boundary are subjected to high amounts of stress over very long periods of time. </li></ul><ul><li>Some rocks break, some fold. </li></ul>
  10. 10. FOLDED MOUNTAINS <ul><li>Folded Mountains - mountains formed when continental crust crumples and bends into folds. </li></ul><ul><ul><li>Form as an oceanic plate sinks under the edge of a continent or as continents collide. </li></ul></ul>
  11. 11. Himalaya Mountain Forming Process <ul><li>The Himalaya belt formed by a collision between India and Eurasia </li></ul><ul><li>1. A convergent boundary develops. </li></ul><ul><li>2. Continental collision begins. </li></ul><ul><li>3. Collision continues. </li></ul>
  12. 12. MOUNTAINS CAN FORM AS ROCKS MOVE ALONG FAULTS <ul><li>Fault-Block Mountains - form as blocks of rock move up or down along a normal fault. </li></ul><ul><ul><li>Forces within the Earth cause the lithosphere to stretch and pull apart. </li></ul></ul><ul><ul><li>Cold, rigid rocks in the crust break into large blocks. </li></ul></ul><ul><ul><li>As stretching continues, the blocks of rock move along the faults that separate them </li></ul></ul>
  13. 13. Fault-Block Mountain Range Formation <ul><li>The Sierra Nevada in California is a fault-block mountain range </li></ul><ul><li>1. The range moved up along a normal fault on its eastern edge. </li></ul><ul><li>2. The block on the other side dropped down. </li></ul><ul><li>3. The eastern side of the range is steep. The western side tilts down gently toward California’s Central Valley. </li></ul>
  14. 14. <ul><li>http://www.pond5.com/stock-footage/909732/mountain-formation.html </li></ul>
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