Weathering and
Erosion
Created By:
Madelyn Dzierzynski
And Taryn Grasser
Weathering
• Weathering is the
breaking down of
rocks, soil, and
minerals as well as
artificial materials
through contact with
the Earth’s
atmosphere, biota, and
waters.
Erosion
•
Erosion is the
process by which soil
and rock are removed
from the Earth’s
surface by natural
process such as wind,
or water flow, and
then transported and
deposited in other
locations.
Pictures of Different Types of
Weathering
Pictures of Weathering and Erosion
Causes of Weathering and Erosion
• The suns heat
causes surface rocks
to expand, fracture,
and to get moisture
on the rocks that
can evaporate.
Factors Controlling the Rate of Erosion
• It is impossible to
play-down the
importance of
preventing soil
erosion, but like many
problems before you
can address it you first
have to understand it.
USGS- Difference Between Erosion and
Weathering
• Weathering involves
two processes that
often work in concert
to decompose rocks.
Erosion is the process
by which soil and rock
are removed from the
Earth’s surface by
natural processes.
Soil Erosion
• Soil Erosion by water,
wind tillage effects
both agriculture and
the natural
environment. Soil loss,
and its associated
impacts, is one of the
most important of
today’s environmental
problems.
Study of Historic Hopi Buttes Area
• This project examines
land use, climatic
variability, and their
related impacts on
land surface
conditions in the
ecologically sensitive
Hopi Buttes region of
the Navajo Nation.
Erosion in the Southwest
• Erosion is carving into
Southwest Washington
Beaches. In recent
decades, new erosion hot
spots have developed.
Erosion is also cutting
into Cape Disappointment
State Park up to 90 camp
sites could be lost.
Coastal Erosion Prevention
• Coastal erosion is a global
problem. On the Alaskan
coast, it amounts to 45 feet
per year. However, there are
measure that can prevent
coastal erosion. Coastal
structures are used in coastal
defense schemes with the
objective of preventing
shoreline erosion and
flooding of the adjacent
coastal areas.
Wind Erosion Prevention
Wind erosion
happens when the
soil is left
unprotected from
the strong winds.
The loss of topsoil
lowers the quality
of the soil.
Beach Erosion Prevention Study
• Recognizing the
importance of the state's
beaches, the Florida
Legislature in 1986
adopted a posture of
protecting and restoring
the state's beaches
through a comprehensive
beach management
planning program
•
Geologic Hazards: Landslides
• Landslides constitute a
major geologic hazard
because they are wide
spread, and they occur in
all 50 states and U.S.
territories, and cause $1-2
billion in damages and
more than 25 fatalism on
average each year.
Federal Emergency Management Agency
Landslides and Mudflows
• Even if you feel you live
in a community with a
low risk of flooding,
remember that anywhere
in rains, it can flood.
Expansion of urban and
recreational
developments into hillside
areas leads to more
people that are
threatened by landslides
each year.
Solution
• Vegetation is a key factor in erosion prevention,
particularly on steep slopes. Retaining native trees,
shrubs and grasses on a site that is being developed can
greatly reduce future erosion damage, and offset the cost
of preserving them. Conserving a natural wetland, within
or next to a new development, an provide valuable
storm water detention, which helps to prevent flood
damage. Soil that has been compacted by heavy
pedestrian traffic is more prone to erosion. Well built
trails, set back from the edge of streams, can minimize
this problem.
CONTINUED-----
Solution
• Reducing impervious surfaces is very
helpful for preventing erosion damage
in streams, as volume of runoff is thud
greatly reduced. There are many
agriculture practices that reduce
erosion damage and limit the loss of
valuable topsoil.
Bibliography
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http://en.wikipedia.org/wiki/Weathering/
http://en.wikipedia.org/wiki/Erosion/
http://facstaff.gpc.edu/~pgore/geology/geo101/weather.htm
http://science.nationalgeographic.com/science/photos/weathering-erosiongalary.html#baffin-island
http://google.com
http://geo.ua.edu/intro03Eros.html
http://geomaps.wr.usgs.gov/parks/misc/gweareo.html
http://soilerosion.net/
http://esp.cr.usgs.gov/hopibuttes/
http://www.ecy.wa.gov/programs/sea/coast/erosion/study.html
http://www.advancedcoastaltechnology.com/
http://www.enviroment.ualberta.ca/SoilPosters/wind.cfm
http://www.s-t.com/daily/05-01/05-01-01/c06sp113.htm
http://landslides.usgs.gov/
http://www.fema.gov/hazard/landslide/index.shtm
Thanks For Watching!
Hope You Enjoyed! 