Term
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Definition
- Sudden release of energy due to tectonic activity
- Most occur at plate boundaries
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Term
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Definition
- Rocks rupture when pressure accumulates on either side of fault
- Rocks rebound & return after pressure is released
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Term
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Definition
- Study of Earthquakes
- A seismogram is made on a seismograph
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Term
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Definition
| Point where Earthquakes' energy is released |
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Term
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Definition
| Point of surface vertically above focus |
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Term
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Definition
| Mark locations of Earthquakes on subducting plate |
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Term
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Definition
| Cause most of the shaking that people feel. |
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Term
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Definition
- Travel through the Earth
- P-waves & S-waves
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Term
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Definition
- Travel along or just below the surface
- Rayleigh & Love waves
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Term
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Definition
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Term
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Definition
- Quantitative
- Richter Scale
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Term
| Richter Scale replaced with ? |
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Definition
| Seismic-moment magnitude scale |
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Term
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Definition
| Water-saturated clays become fluid |
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Term
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Definition
| Earthquakes on the seafloor can generate deathly waves |
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Term
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Definition
| Earthquakes trigger landslides and rock slides |
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Term
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Definition
| Short-term & long-term changes prior to EarthQuake that assist in prediction |
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Term
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Definition
| Any change in the shape or volume of rock |
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Term
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Definition
- Compression
- Tension
- Shear
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Term
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Definition
- Rocks are squeezed together along the same line
- Shortens rock layers by folding or faulting
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Term
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Definition
- Forces along same line act in opposite directions
- Tension lengthens the rocks or pulls them apart; fractures and faults form
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Term
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Definition
- Parallel forces act in opposite directions
- Deformation occurs along closely spaced planes, like the slip between cards in a deck
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Term
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Definition
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Term
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Definition
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Term
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Definition
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Term
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Definition
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Term
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Definition
| Intersection of horizontal plane & inclined plane |
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Term
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Definition
| Max angle of inclined plane |
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Term
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Definition
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Term
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Definition
| Monoclines, Anticlines, and Synclines |
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Term
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Definition
- Circular to oval structures which have rock layers occurring in age-position contexts
- Same as Anticlines and Synclines
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Term
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Definition
| Form in response to tensional forces (rocks are being pulled apart) |
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Term
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Definition
- Horsts
- Grabens
- Strike-slip faults
- Dip-slip faults
- Oblique Slip Faults
- Orogeny
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Term
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Definition
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Term
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Definition
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Term
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Definition
- All movement in direction of strike of fault plane
- Left & right lateral
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Term
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Definition
- All movement in direction of dip (vertical)
- Normal or Reverse
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Term
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Definition
| Hanging Wall is below the footwall (tension) |
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Term
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Definition
| Hanging wall is above the footwall (compression) |
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Term
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Definition
| Both strike slip and dip slip movements |
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Term
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Definition
- Primary Waves
- Compressional
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Term
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Definition
- Secondary Waves
- Move Vertically
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Term
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Definition
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Term
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Definition
Move Back & Forth
Sideways motion |
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