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Changes on the Earth's Surface

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11/8/2009 12:45:44 PM
Posted: 8 years ago
To steal a Wiki Answer:

Earthquakes can crumble and fracture rock structures, exposing more of their surface to weathering and erosion.

They might sometimes cause tsunamis or make water go crazy

Basically, as an earthquake occurs it unsettles the ground in its affected zones, loosens up the soil, exposes new surfaces, and generally causes havoc which allows the forces of erosion to work easier and upon new surfaces.

As also noted by the Wiki Answer, earthquake-related tsunamis can have major erosion and deposition effects - as the tsunami moves along its path it picks up sediment from the bottom and deposits it on land whenever it hits. If you look at the 2004 Sumatra tsunami, it apparently deposited 80cm thick sheets of sand upon land.