Question 27 (1 point)
the chemical composition of basalt or gabbro is close to the composition...
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Question 27 (1 point)
the chemical composition of basalt or gabbro is close to the composition of continental crust.
question 27 options:
true
false
question 29 (1 point)
detrital sedimentary rocks are classified according to clastic particle size; chemical sedimentary rocks are named according to the most abundant minerals.
question 29 options:
true
false
question 30 (1 point)
two earthquakes in different locations have the same magnitude. the earthquake at location 1 has a shallow focus and the earthquake at location 2 has a deep focus. given that the building codes, population density, etc. at the two locations are similar, there will be more damage at location 2 given the deeper focus of the earthquake.
question 30 options:
true
false
question 31 (1 point)
what major change occurs during metamorphism of limestone to marble?
question 31 options:
limestone grains react to form quartz and feldspars
calcite grains grow larger and increase in size
calcite grains are dissolved away leaving only marble crystals
clays crystallize to micas, forming a highly foliated, mica-rich rock
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