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Mountain Building


Title: Mountain Building Author: Faculty/Staff/Student Last modified by: faculty Created Date: 4/18/2008 6:27:28 PM Document presentation format: On-screen Show – PowerPoint PPT presentation

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Title: Mountain Building

Mountain Building
  • The study of erosion and its effects on mountains
  • Bridget Kelly, Maura Shanahan, Samantha Sippel

What is Erosion?
  • Erosion is the process by which sediment is
    removed from its place of origin.
  • Sediment can be removed by running water, winds
    or glaciers
  • A muddy river is an indication that sediment is
    being transferred by water
  • A cloud of dust is a sign that sediment is being
    transported by wind
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Erosion of Mountains
  • .1 to .2 mm/year is a reasonable average rate of
    erosion in mountains
  • Isostatic compensation- The process in which
    lateral transport at the surface of the earth by
    erosion or deposition is compensated by lateral
    movements in a subcrustal layer
  • Causes the crust to rise when material is eroded
  • Causes the crust to sink when material is added

Erosion of Mountains
  • Erosion of mountains may cause the elevation of
    the highest peaks to increase
  • Erosion of the Himalayas removed carbon dioxide
    from the atmosphere and lowered global

Erosion in Ohio
  • Each year an estimated average of 1.8 tons of
    soil erodes from 1 acre of Ohio Rural Lands
  • With over 22 million rural acres in Ohio this
    amounts to over 40 million tons of soil erosion
    and costs close to 40 million per year
  • This erosion occurs both naturally and from human
  • Natural erosion occurs because of flooding or the
    washing out of stream banks
  • Human sources include constructing roads and
    buildings and tilling cropland
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