quiz 8 Flashcards
Which types of mass movement takes place most gradually?
creep
Which organic substance is produced by black organic shale at temperatures below (cooler than) the oil window?
kerogen
Consult the figure below. In what kind of terrain would you expect to find a placer deposit?
streambed
What increases the risk of mass movement?
flooding an unconsolidated sediment with water to the point of saturation
…occurs when a neutron strikes the nucleus a radioactive atom such as 235U.
fission
If oil shale is buried deep enough to attain a temperature of 200°C, what is formed?
gas
What situations is the most likely candidate for the occurrence of mass movements?
a mountain terrain in a humid environment
a cut bank along a river that was formed by a
slump
a reservoir rock containes … porosity and permeability, while a seal rock contains … porosity and permeability
high, low
Geothermal energy is used extensively in Iceland and New Zealand due to the fact that both of these countries host multiple
volcanic hot region
If the average geothermal gradient in an area is 15°C/km, how deep must oil shale be buried in order for it to transform into oil?
greater than 6 km but no more than 10 km
The image below is of the San Onofre Nuclear Generating Station in Southern California, which was shut down in 2012 due to safety concerns. Why?
earthquake risk
Moisture among sediment grains….
can promote stability if present in small amounts
You are an architect or engineer trying to determine if the slope on which your client’s house sits is stable. You determine that the angle of repose of the hillside is 35 degrees. Which of the following situations would such a slope be considered stable?
The slope is composed of dry gravel.
Which of the following mountains has recently produced a lahar flow.
Mount St. Helens