Where Does the Water in Hydrothermal Fluids Come From

question 39

Multiple Choice

Where does the water in hydrothermal fluids come from?

• A) Some of it may seep into the protolith from nearby metamorphic units.
• B) Some of it may seep into the protolith from nearby sedimentary units.
• C) Some of it was originally bonded to minerals in the protolith.
• D) Some of it may come from underlying groundwater.

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