In which geologic setting is the most widespread occurrence of hydrothermal metamorphism found?
A) Subduction zones between oceanic and continental plates
B) Along the axis of a mid-ocean ridge system
C) Along transform plate boundaries
D) Where mantle plumes interact with the bottom of continental plates
Question 2
________ metamorphism tends to occur in regions where massive amounts of sedimentary or volcanic materials accumulate in a subsiding basin, pushing older rocks further into the interior.
A) Contact
B) Hydrothermal
C) Burial
D) Regional
The geomagnetic polarity time scale shows how Earth’s magnetic pole has changed through geologic tim
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Setting the Boundaries
A sampling of the modified and unusual bases found in tRNAs
Hydrothermal vents
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