General Geology Hi dear, please correct for me the right answer 17. What kind of

Question

General Geology
Hi dear,
please correct for me the right answer

17. What kind of melting is found at point 'A'? an Decompression melting b, Heat transfer melting c, Flux melting d. Ice melting 18. What kind of rocks are commonly erupted from the volcanoes above point A a. Granite b. C&D; c, Basalt d, Andesite 19. Which mountain range is a modern day example of the tectonic setting seen above point 'A'? a. The Andes b, The Rockies c, The Cascades d. A & C 20. By which processes may magma compositions become more silicic? a. Decompression melting b. Assimilation c. Addition of volatiles d. All of the above 21. Which rock types indicate a tropical environment in the past? a Sandstones and rock salt b. Coal and limestones d. None of the above

Explanation / Answer

17) flux melting. flux melting is the melting which is favoured by the addition of water molecules and volatiles

18) c and d

19) andes and cascades

20) all of the above

21) coal and limestone

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