View the step-by-step solution to:

Question

This question was created from ess222h-m17.pdf https://www.coursehero.com/file/30689171/ess222h-m17pdf/

30689171-378445.jpeg
30689171-378445.jpeg

5 Which of the following is a common characteristic of a felsic lava?
a) SiOz content near 50 wt%
b) high eruption temperature near 1100 C
c) presence of quartz phenocrysts
d) all of the above
plutonic rocks?
6. What do the abbreviations Q, A, and P represent in the QAPF classification scheme for
a) quartz, alkali feldspar and plagioclase
b) quartz, anorthite and perthite
c) quotient, adiabat and pressure
d) quartz, albite and pyroxene
7. Which ternary phase diagram is commonly used to represent melting processes in upper
crustal rocks of metasedimentary origin?
a) forsterite - diopside - silica
b) albite - anorthite - diopside
c) forsterite - enstatite - silica
d) quartz - albite - K-feldspar
solid solution?
8. What is the maximum number of phases that can coexist in a binary system with complete
a) one
b) two
c) three
d) four
9. What property of minerals leads to the presence of binary loops in T-X phase diagrams?
a) complete immiscibility of the two endmembers
b) cation disordering in the crystal lattice
c) solid solution between the two endmembers
d) incongruent melting of an intermediate compound
10. Which of the following has probably not been an important source of heat within the Earth?
a) friction due to subduction
b) accretion from the solar nebula
c) crystallization of the inner core
d) radioactive decay of K, Th, and U
1 1. silicate magmas produced by partial melting of the upper mantle are
a) basaltic
b) granitic
c) orthoscopic
d) very viscous

Recently Asked Questions

Why Join Course Hero?

Course Hero has all the homework and study help you need to succeed! We’ve got course-specific notes, study guides, and practice tests along with expert tutors.

  • -

    Study Documents

    Find the best study resources around, tagged to your specific courses. Share your own to gain free Course Hero access.

    Browse Documents
  • -

    Question & Answers

    Get one-on-one homework help from our expert tutors—available online 24/7. Ask your own questions or browse existing Q&A threads. Satisfaction guaranteed!

    Ask a Question
Ask Expert Tutors You can ask You can ask ( soon) You can ask (will expire )
Answers in as fast as 15 minutes