Why do the eras of the Phanerozoic eon all end with zoic?
A) They are based on rock called zoisites.
B) These names refer to life or living things; they invoke the changes in fossil organisms from one era to the next.
C) Zoic means time in Latin.
D) These eras were all first described near the London Zoo, so the names pay tribute to that location.
Question 2
Which of the following geologic observations would bear directly on working out the sequence of geologic events in an area?
A) mineral analysis of schist
B) grain size comparison between sandstone and shale
C) an unconformity between a granite and a sandstone
D) the feldspar and quartz contents of a granite
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