WAVES, WIND, AND GLACIERSErosion and Deposition

How Waves Form The energy in waves from wind that

blows across the water’s surface.

Erosion by Waves Waves shape the coast through erosion

by breaking down rock and transporting sand and other sediment.

How Waves Erode Land Impact Abrasion Change in Wave Direction

Headland Part of the shore that sticks out into the

ocean. Example: Marin Headland

Erosional Features of Waves

Depostional Features of Waves

Wave Erosion & Deposition Landforms

Erosion by Wind Wind causes erosion by deflation and

abrasion.

Deflation The erosion of sediment by wind. Stronger the wind, the larger the

particles it can pick up.

Deposits By Wind

Glacier Any large mass of ice that moves slowly

over land.

Plucking The process by which a glacier picks up

rocks as it flows over the land.

Till A mass of rock and soil deposited

directly by a glacier.

Two Kinds of Glaciers

Continental Glacier A glacier that covers much of a continent

or large island. Can cover millions of square kilometers. Antarctica and Greenland. Can flow in all directions. Can spread out like pancake butter in a

frying pan.

Ice Ages In the past, continental glaciers have

covered larger parts of the Earth’s surface.

Valley Glaciers A long, narrow glacier that forms when

snow and ice build up high in a mountain valley.

The sides of mountains keep these glaciers from spreading out in all directions.

Found in many high mountains. Sierra Nevada and Mount Shasta.

Glaciers Glaciers can form only in an area where

more snow falls than melts. Once the depth of snow and ice reaches

more than 30 to 40 meters, gravity begins to pull the glacier downhill.

How Glaciers Shape the Land

Plucking and Abrasion

Glacial Deposition When a glacier melts, it deposits the

sediment it eroded from the land, creating various landforms.

Glacial Deposition Landforms

Glacial Landforms

Credits Geo Resources

http://www.google.com/imgres?hl=en&biw=1169&bih=663&tbm=isch&tbnid=NEojdsvuGCLF8M:&imgrefurl=http://www.georesources.co.uk/leld.htm&docid=IGXmJeec1Qr11M&imgurl=http://www.georesources.co.uk/sea6.gif&w=380&h=292&ei=P_5nT_2FI6yMigLawKmgBw&zoom=1&iact=hc&vpx=480&vpy=226&dur=1544&hovh=197&hovw=256&tx=159&ty=83&sig=102853300329707996231&page=2&tbnh=145&tbnw=189&start=15&ndsp=20&ved=1t:429,r:7,s:15

Association of Environmental & Engineering Geologists. Retrieved on 3/19/2012. http://www.google.com/imgres?hl=en&biw=1169&bih=663&tbm=isch&tbnid=xXW6jQgEKQBf_M:&imgrefurl=http://www.aegweb.org/

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