question 1\n2 pts\nwhich of the following is a false statement?\ndecompression melting at divergent plate…

question 1\n2 pts\nwhich of the following is a false statement?\ndecompression melting at divergent plate boundaries produces mafic magma in the asthenosphere.\ncontinental extension typically produces mafic magmas in the asthenosphere.\nassimilation of country rock requires heat - transfer melting in the crust.\nflux melting of subducting lithosphere produces intermediate magma in the mantle wedge.\nquestion 2\n2 pts\nplagioclase and olivine are examples of which mineral class?\nsilicates\ncarbonates\noxides\nsulfates

question 1\n2 pts\nwhich of the following is a false statement?\ndecompression melting at divergent plate boundaries produces mafic magma in the asthenosphere.\ncontinental extension typically produces mafic magmas in the asthenosphere.\nassimilation of country rock requires heat - transfer melting in the crust.\nflux melting of subducting lithosphere produces intermediate magma in the mantle wedge.\nquestion 2\n2 pts\nplagioclase and olivine are examples of which mineral class?\nsilicates\ncarbonates\noxides\nsulfates

Answer

Brief Explanations:

  • For Question 1: Continental extension in the asthenosphere typically produces felsic - not mafic - magmas. Decompression melting at divergent boundaries makes mafic magma in the asthenosphere. Assimilation of country rock needs heat - transfer melting in the crust. Flux melting of subducting lithosphere forms intermediate magma in the mantle wedge.
  • For Question 2: Plagioclase and olivine are common silicate minerals. Silicates are minerals that contain silicon and oxygen, and these two are well - known examples in this class.

Answer:

Question 1: Continental extension typically produces mafic magmas in the asthenosphere. Question 2: Silicates