sci Flashcards
refers to the faults where movement of blocks is parallel to the dip of the fault surface
drip-slip fault
is formed by tensional stresses that pull rocks apart hanging wall moves down relative to the footwall associated with divergent plate boundaries.
normal fault
are the alternating uplifted and down dropped blocks
horsts and grabens
refers to the uplifted or raised areas
horst
refers to the down-dropped or lowered areas
grabens
is a formed by the compressional forces that pushes the plates toward eachother (pataas, pababa)
reverse fault
moves upward relative to the footwall
hanging wall
reverse fault whose dip is less than 45 degrees
thrust fault
is a result of the sideways movement of blocks of rocks blocks move laterally
strike slip fault
has both dip slip and strike slip component formed by shear stress, and tensional compressional stress
oblique fault
these are shaking of the earth’s surface resulting from the sudden release of energy
earthquake
is a fault movement or slippage is expected to occur
active fault
is a fault that has ceased activity for a long time
inactive fault
location where the slippage or movement took place
hypocenter
point on the ground directly aware the hypocenter
epicenter
an elevated surface caused by a hypocenter at the fault
fault scarp
it refers to the amount of energy released by an earthquake as the ground shakes
magnitude
is used to measure the magnitude of an earthquake
Richter scale
it is an instrument that is used to determine the strength of an earthquake of an earthquake
seismograph
is a process by which earthquakes are mapped using several seismograph
triangulation
these are harbor waves if waves that come into the bay from the ocean
tsunami
