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Q19: Time-stratigraphic units are units of rock sharing
Q33: Lithostratigraphic units are defined by physical attributes
Q39: Archean and Proterozoic greenstone belts formed in
Q42: What are the requirements for a useful
Q46: Air flows from _ pressure regions to
Q46: The Silurian Clinton Formation is an important
Q56: What causes a delta to form?
Q59: Briefly explain why critics did not readily
Q59: What provides most of the sediment of
Q85: What is the significance of the different