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Lecture9

Table of Contents

  1. Journey to the Center of Earth
  2. Why study Earth's interior?
  3. Why study Earth's interior?
  4. Why study Earth's interior?
  5. Why study Earth's interior?
  6. Why study Earth's interior?
  7. Why study Earth's interior?
  8. Why study Earth's interior?
  9. Why study Earth's interior?
  10. Why study Earth's interior?
  11. What's Inside the Earth?
  12. 8.1 How do geologists know about rocks in Earth's interior?
  13. 8.1 How do geologists know about rocks in Earth's interior?
  14. 8.1 How do geologists know about rocks in Earth's interior?
  15. 8.1 How do geologists know about rocks in Earth's interior?
  16. 8.1 How do geologists know about rocks in Earth's interior?
  17. 8.1 How do geologists know about rocks in Earth's interior?
  18. 8.1 How do geologists know about rocks in Earth's interior?
  19. 8.2 How do earthquakes help make images of Earth's interior?
  20. 8.2 How do earthquakes help make images of Earth's interior?
  21. 8.2 How do earthquakes help make images of Earth's interior?
  22. Earthquake Waves
  23. 8.2 How do earthquakes help make images of Earth's interior?
  24. Velocity of Earthquake Waves
  25. 8.2 How do earthquakes help make images of Earth's interior?
  26. Earthquake Waves-travel time
  27. 8.2 How do earthquakes help make images of Earth's interior?
  28. 8.2 How do earthquakes help make images of Earth's interior?
  29. 8.2 How do earthquakes help make images of Earth's interior?
  30. 8.2 How do earthquakes help make images of Earth's interior?
  31. 8.2 How do earthquakes help make images of Earth's interior?
  32. 8.3 How do we know ... how to determine velocities of seismic waves in rocks?
  33. 8.3 How do we know ... how to determine velocities of seismic waves in rocks?
  34. 8.3 How do we know ... how to determine velocities of seismic waves in rocks?
  35. 8.3 How do we know ... how to determine velocities of seismic waves in rocks?
  36. 8.3 How do we know ... how to determine velocities of seismic waves in rocks?
  37. 8.4 What composes the interior of Earth?
  38. 8.4 What composes the interior of Earth?
  39. 8.4 What composes the interior of Earth?
  40. 8.4 What composes the interior of Earth?
  41. 8.4 What composes the interior of Earth?
  42. 8.4 What composes the interior of Earth?
  43. 8.5 How hot is the interior of Earth?
  44. 8.5 How hot is the interior of Earth?
  45. 8.5 How hot is the interior of Earth?
  46. 8.5 How hot is the interior of Earth?
  47. 8.5 How hot is the interior of Earth?
  48. 8.5 How hot is the interior of Earth?

Text and Images from Slide

Cross section of the earth based on velocity measurements.

Fig 8.19

8.4 What composes the interior of Earth?

A cross-section of Earth based on velocity measurements based on seismic data. Density is estimated from these data. Note that the core is three times as dense as the mantle.

The crust-mantle boundary is named after its discoverer,

Yugoslavian

seismologist Andrija Mohorovicic—the Moho, which is 5-20 km below ocean crust and 25-85 km beneath continents.

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