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Published byChristopher Jeremy Anthony Modified over 8 years ago
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California’s Resources & Natural Hazards
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California Geology Sierra Nevada Mountains Volcanoes San Andres Fault
Central Valley
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Sierra Nevada’s An oceanic plate subducting beneath the N. American plate, causing igneous rock to form Erosion and uplifting exposed mountains
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Ore deposits Form when molten igneous rock was injected into older rock GOLD!!! Mostly mined in the Sierra Nevada mountains (also Klamath Mts and Mojave desert)
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Central Valley This fault movement caused portions of the crust to drop down Created the CENTRAL VALLEY Sediments were deposited in the valley These sediments made the valley a major agricultural area and source of oil and natural gas
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Volcanoes Subduction of Juan de Fuca plate beneath the NA plate produced volcanoes (Cascade Mountains) Mt. Shasta & Lassen Peak
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Volcanoes Mt. Shasta, type: Composite volcano, Last active: 1786
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Volcanoes Mt. Lassen, type: Volcano dome, Last activity: 1921
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San Andres Fault The force that uplifted mountains also caused a transform boundary to form This fault is the SAF Pacific plate is moving NW relative to the NA plate
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Natural Disasters in California
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Major Californian Earthquakes
Major earthquakes of the past 1906 San Francisco Magnitude 8.1, massive damage, many fires burned the city
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Major Californian Earthquakes
1989 SF Bay Area Magnitude 7.1, massive damage, bridges and highways collapse.
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Major Californian Earthquakes
1994 Northridge Magnitude 6.4, many buildings destroyed
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Fires The dry summers and falls make perfect conditions for fires in southern California
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Fires In Northern California, the build up of brush create the perfect fuel for fires
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Fires Small fires are good, natures way of cleaning itself
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Landslides Too much rain all at once could trigger a landslide.
example: La Conchita
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Coastal Erosion Caused from energy of waves
Occurs along coastal cliffs Santa Barbara
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Tsunami’s Earthquakes along the Pacific Rim cause seismic sea waves… called TSUNAMIS
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Importance of WATER
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Water & the Economy California’s Economy relies on Agriculture and Industry These two things require LARGE amounts of water!
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CA Water Supply Freshwater supply is from
Precipitation Surface Water Groundwater Begins as snow that falls on the Sierra Nevada Mts
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Water Projects Projects are created to meet freshwater needs throughout the state Aqueducts Channel where water flows from high elevation to lower elevation Water comes from Sierra Nevada’s & Colorado River
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Water Conservation During dry seasons and draughts, conservation is a must water lawns less, shorten showers, use water saving washers, fewer car washes
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