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| Which of the following is an example of an intraplate earthquake |
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| Seven people died by a giant flood two years after a landslide. |
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| The site of three of the largest earthquakes ever recorded in North America |
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| Which natural disaster occurred in the Santa Cruz mountains on a transform fault boundary? |
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| About 3000 people died in this natural disaster located in Northern Italy. |
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| The _______ Segment of the San Andreas fault has an earthquake recurrence interval of about 20-to-22 year site of the most ambitious earthquake prediction experiment in the world? |
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Term
| Which earthquake was centered on the San Andreas fault? |
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| This was the first earthquake to be accurately predicted over the short term. |
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| This earthquake was the result of slip along a previously unknown "blind" thrust fault. |
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| About 700 people died, mostly from fires that could not be extinguished because of broken water mains. An additional 5000 people died in the weeks and months that followed due t epidemics and disease. |
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| Only 92 people survived (25,000 died) by running to the top of Cemetery Hill. |
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| This earthquake occurred offshore, above a subduction zone, and most deaths (121) were from the resulting tsunami. |
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Term
| Normal faults are characteristic features of _______? |
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Definition
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| Reverse faults and thrust faults are characteristic features of _________? |
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Definition
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Term
| Strike-slip faults are characteristic features of _______? |
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Definition
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Definition
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Definition
| are often generated by movements of the ocean floor |
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Term
| Faults can be locked in place along stable rough spots called ______. |
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Definition
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Term
| Dilation (associated with micro-fracttures and the influx of water) can be monitored by observing changes in: |
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Definition
all of the above
a)ground tilt
b)electrical conductivity of the rocks
c)radon level in ground water |
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Term
| A type of mass wasting that moves downslope as an intact block along a well-defined curved surface is called a _______ |
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Definition
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Term
| A deposit of loose rock at the base of an unstable cliff is called ________? |
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Definition
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Term
| The steepest angle at which material remains stable is called the _______ |
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Definition
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Term
| Water can enhance a landslide by: |
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Definition
all of these
a) adding weight to the land mass
b)lubricating the slip surface
c)destroying the cohesion between grains |
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Term
| The changes a rock body undergoes in volume and/or shape is called: |
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Definition
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Term
(45)
What type of stress is present in the bend of this right-stepping fault
----->
--------
<----- |
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Definition
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Term
| The world's deepest earthquakes are associated with: |
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Definition
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Term
47
source of earthquake at point x (on the dark line) also known as |
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Definition
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Term
picture
the earthquake would have to be recorded by at least ________ seismic stations to determine the site of the epicenter. |
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Definition
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Term
| this area experienced a 5.5 magnitude earthquake three years earlier, in 1992. The 7.5 magnitude 1995 earthquake released ______ more energy than the 1992 earthquake? |
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Definition
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Term
| The amount of ground shaking was ______ greater than the ground shaking of the 5.5 magnitude 1992 earthquake |
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Definition
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Term
| The first seismic waves to reach Richterville were the _____ |
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Definition
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Term
| The P-S interval (the time-gap separating the p-waves and the s-waves) was greater at: |
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Definition
| Richterville (highest town in diagram) |
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Term
| The greatest amount of ground shaking was caused by the _______ |
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Definition
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Term
| disregarding the distance from the source of teh EQ(EQ strength will not diminish over short distances) which town experienced the most violent ground shaking? |
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Definition
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Term
| Point Y is called _______ |
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Definition
| The epicenter (highest point on hill) |
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Term
| The region above the fault, labeled V is called the _______(middle of the mountain ) |
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Definition
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Term
| The area below the fault, labeled V, is called the _________ |
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Definition
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Term
| *The type of stress that led to te EQ was |
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Definition
Tension ------>
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<-------- |
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Term
| *The EQ occurred along a ______ fault. |
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Definition
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Term
| The New Madrid (1811-1812) and Lisbon(1755) EQs occurred above subduction zones |
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Definition
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Term
| The region of shallow EQs associated with transform faults is called a Benioff Zone |
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Definition
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Term
| The amplitude of seismic waves will increase when they pass from solid bedrock to poorly consolidated sediments |
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Definition
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Term
| the energy released during an earthquake results from a process called elastic rebound |
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Definition
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Term
| The hypocenter (focus) is the location on the earth's surface directly above the epicenter |
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Definition
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Term
| The greatest frequency of earthquake activity occurs in a relatively narrow belt surrounding the Atlantic Ocean |
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Definition
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Term
| When examining a typical seismic record, we expect to find surface waves arriving before body waves |
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Definition
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Term
| devastating EQs are common in areas experiencing fault creep |
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Definition
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Term
| Elastic deformation is permanent and non-reversible |
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Definition
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Term
| the zone of brittle deformation occurs at the base of the crust, below a depth of about 30km |
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Definition
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Term
| A dip-slip fault can show right-lateral or left-lateral displacement |
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Definition
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Term
| A fault having horizontal movement only, is a strike-slip fault |
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Definition
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Term
| Tension results in the shortening of rock bodies by folding and reverse faulting. |
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Definition
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Term
| Folds are the product of plastic deformation and faults are the product of brittle deformation. |
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Definition
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Term
| *P-waves and S-waves travel along the outer surface of the earth |
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Definition
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Term
| The Richter Scale measures the intensity of and EQ. |
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Definition
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Term
| Unusual animal behavior provides a potential method for the short-term prediction of earthquakes |
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Definition
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Term
| Based on the historical record, the risk of a future EQ in the continental US greater than 8.0 on the Richter Scale is restricted to the Western US |
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Definition
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Term
| An eon represents the greatest expanse of geologic time |
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Definition
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Term
| Microtektites are small glassy spheres associated with metoerite impacts |
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Definition
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Term
| The element iridium is relatively rare in meteorites, but abundant in the earths crust |
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Definition
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Term
| The antipodal hypothesis relates the Deccan flood basalt eruptions in India to the K/T mass extinction event |
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Definition
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Term
| After writing his Ph.D. dissertation on Meteor Crater, ___________ worked for the U.S. geological Survey and later helped to establish the Spacewatch program to identify NEOs (near earth objects) with the potential of colliding with the Earth |
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Definition
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Term
| Which of the following is NOT related to a mass extinction event? |
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Definition
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Term
| The Era of Recent Life(also known as the age of mammals) is called the ______________? |
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Definition
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Term
| Extinction of the dinosaurs appears to be contemporaneous with: |
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Definition
All of the above:
a)deposition of the clay layer at the K/T boundary
b)the Chicxulub crater
c)The Deccan flood basalt province |
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Term
| The impact site called Meteor Crater occurs in: |
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Definition
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Term
| The great Permian extinction appears to be contemporaneous with |
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Definition
| the Siberian flood basalts |
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Term
| Many scientists are convinced that the impact site for the K/T extinction is located at: |
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Definition
| The Chicxulub structure, Yucatan, Mexico |
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