A Changing Earth

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A Changing Earth
Weathering, Erosion and Deposition
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What will break down, or weather, rock?
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What will erode, or move, the rocks and soil?
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Precipitation
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Ice or Temperature Changes
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Moving Water
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Plant Roots
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Glacier Movement
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Wind
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Gravity
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Deposition
The rocks or sediment being dropped in a new
location
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Nile River delta in Egypt
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Name the forces Weather or break rock.. Erode or
carry rock Deposit rock in a new location.. The
list is similar for each!!!
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What evidence of weathering, erosion and
deposition can you identify?
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Navajo sandstone shows timeless weathering. Paria
Canyon - Vermillion Cliffs Wilderness Area,
Bureau of Land Management, Arizona, Colorado
Plateau.
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Badlands at sunset showing results of weathering
and erosion
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Badlands, clay hills worn away by weathering and
erosion
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The Grand Canyon
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Large granite rocks on beach amidst tropical
trees. Republic of Seychelles, Africa.
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Mount McKinley, Denali National Park, Alaska.
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Navajo sandstone in detail. Colorado Plateau,
Utah/Arizona.
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An Aletsch glacier in Switzerland.
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Glacier Bay, Alaska.
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Navajo sandstone shows patterns of wind erosion.
Paria Canyon - Vermillion Cliffs Wilderness Area,
Bureau of Land Management, Arizona, Colorado
Plateau
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Weathered swirls of canyon rock. Colorado
Plateau, Slot Canyon, Antelope Canyon, Utah.
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Tree roots growing into rock.
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Glacier grooves carved during ice age by rocks
at bottom
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Glacier-carved mountain top
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Detail of striated patterns on rock during a
cloudy, winter day. Zion National Park, Utah.
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Glacier Groves
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Glacial moraine
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Mushroom rock at sunset looms precariously next
to water. Puerto Ballandra near LaPaz, Baja.
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The Indus River near Mohenjodero, Pakistan.
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The Colorado River.
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The Yukon River from the air, Canada.
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Colorado River canyons in Utah
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Eureka Dunes, Death Valley National Park,
California
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Great Sand Dunes National Monument, Colorado.
Complex dunes attain a maximum height of 800 feet
above the floor of the valley. Sangre de Cristo
Range is in the background.
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Mineral-rich water evaporates and forms gypsum
sand that the wind blows into huge dunes. Such
dunes are constantly moving and changing their
shape
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The sand forms a pedestal on which the plants can
survive after the dune in which they first grew
blows away.
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