When considering hydrothermal deposits, vein- or fissure-filling deposits of metallic ores such as gold or silver are common in ________
A) rocks of a contact-metamorphic zone that formed around a shallow granite pluton
B) pyroclastic materials erupted from a stratovolcano
C) impact structures from meteorites
D) rocks that form in high-pressure subduction zones
Answer: A
Environmental & Atmospheric Sciences
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