Which best describes the setting of the fault that ruptured to generate the eart

Question

Which best describes the setting of the fault that ruptured to generate the earthquake?

a. The fault that ruptured was probably a normal fault associated with a divergent margin

at a mid-ocean ridge.

b. Was likely a thrust fault associated with a continental collision boundary.

c. Was likely a thrust fault associated with a subduction zone.

d. None of the above

SHEET Seismograms have the same time scale. Do not assume they are lined up with respect to time 60 Time (sec) (MYR) TSA T. (KLN) (PNT) VERRUN The Eyrie B Norvos Gulltown C ANDALOS THE PNT) SEA Harrenhal Stomey Sept (KLN Dragonstone PENTOs Ghoyan Drohe KING'S LANDNG NARROW REACH Myr (MYR) Chroyane SEND T Summerhall Sea of Dorne arfall Figure 2 Seismograms and Map of Seismic Recording Stations of the Maesters of the Seven 0200400 Kingdoms. 300 600 900 1200 miles 600 800 1000 km Scale

Explanation / Answer

A thrust fault associated with a subduction zone best describes the setting of the fault that ruptured to generate the earthquake. Because faulting gradually build up strain and stress which may cause sudden earthquake failure. It is referred to as the elastic-rebound theory. There are three main types of fault such as normal, reverse, strike-slip fault, all of which may cause an interplate earthquake. Many earthquakes are caused by movement on faults that have components of both dip-slip and strike-slip. This is known as oblique slip fault. Reverse faults occur in areas where the crust is being shortened such as at a convergent boundary and normal faults occur mainly in areas where the crust is being extended such as a divergent boundary. Reverse faults along convergent plate boundaries are associated with the most powerful earthquakes known as megathrust earthquakes. The magnitude of those earthquakes are above 8 or more.

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