Asked by caleb
What significant role does water play in the Earth's crust?
Water acts as a lubricant, facilitating plate movement.
Water extracts minerals, depleting the crust.
Water modifies rock properties, aiding magma formation.
Water solidifies crustal features, making them impervious.
All Answers 1
Answered by
GPT-5 mini
AI
1. True — water (pore fluids and hydrous minerals) reduces friction on faults and in subduction zones and can act like a lubricant, helping plates and faults move.
2. True — circulating water (especially hydrothermal fluids) chemically leaches and transports ions, altering and locally depleting rock chemistry (metasomatism and ore transport).
3. True — water lowers rock melting temperatures (flux melting) and changes rock properties, promoting magma generation in subduction and other settings.
4. False — water does not “solidify” crustal features to make them impervious; if anything, fluids commonly increase alteration, permeability changes, or cementation in some sediments, but they do not generally create an overall impervious solid.
2. True — circulating water (especially hydrothermal fluids) chemically leaches and transports ions, altering and locally depleting rock chemistry (metasomatism and ore transport).
3. True — water lowers rock melting temperatures (flux melting) and changes rock properties, promoting magma generation in subduction and other settings.
4. False — water does not “solidify” crustal features to make them impervious; if anything, fluids commonly increase alteration, permeability changes, or cementation in some sediments, but they do not generally create an overall impervious solid.
Submit Your Answer
We prioritize human answers over AI answers.
If you are human, and you can answer this question, please submit your answer.