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California Geology

Explore the various hazards in California, including active fault zones, volcanoes, uplifted areas with weak rocks, coastal erosion, and tsunamis. Discover where these hazards occur and learn about their causes. Find out about earthquakes, volcanoes near Los Angeles, landslides, coastal erosion, and the formation of tsunamis.

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California Geology

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  1. California Geology Where are the Hazards? Science Std: Geo # 9b

  2. California has a variety of hazards • Active Fault Zones • Active and Dormant Volcanoes • Uplifted Areas with Weak Rocks

  3. California has a variety of hazards We even have hazards that start outside California • Costal erosion • Tsunamis

  4. California has a variety of hazards Where are these hazards? And what causes them?

  5. Earthquakes Where do they happen? They are up north … And right around here

  6. Earthquakes If we take a closer look at our area…. We see faults all around us

  7. Volcanoes Where do they happen? We know about the volcanoes up north These are part of the Cascade Mountain Range

  8. Volcanoes But did you know about the volcanoes closer to here? Near Los Angeles is Lavic Lake And farther east are the Coso Field Lava Domes

  9. Volcanoes But did you know about the volcanoes closer to here? Lavic Lake is in the Mojave Desert And it hasn’t had any activity in a long time

  10. Volcanoes But did you know about the volcanoes closer to here? Coso Lava Domes Magma pockets push up the surface and make domes

  11. Uplifted Areas with Weak Rocks What is the hazard here??? Landslides Weak rock under the surface cracks and splits When the rocks split, the surface gives way

  12. Uplifted Areas with Weak Rocks Landslides Landslides can happen in many places in California The more hazardous areas are up north – Why?

  13. Coastal Erosion Coastal erosion is just that – erosion that happens on the coast Waves pound against the shore and wash away the rock and sand

  14. Costal Erosion Beaches that start looking like this… Can start eroding And can wind up like this

  15. Tsunamis A tsunami is a huge wave that is caused by an earthquake or other seismic action

  16. Tsunamis But how does a tsunami form?

  17. Tsunamis It could happen due to an earthquake at the convergent zone near Washington

  18. Questions?

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