23. Metamorphic rocks are those which A. are claimed to have certain metaphysica

Question

23. Metamorphic rocks are those which A. are claimed to have certain metaphysical properties, e.g., quartz crystals. B. have mineral compositions altered from those originally present by increased temperature C. have textures altered from those originally present by agents such as water and volatile D. have chemical compositions altered from those originally present by agents such as E. B and C and pressure magmatic fluids organisms and tectonic plates 24. Foliation is a plana r arrangement of mineral grains or crystals within a rock, which occurs through the following processes. Choose the answer which is not related to the foliation process. A. Flattening B. Liquefaction C. Recrystallization D. Rotation 25. Foliated metamorphic textures form under which of the following circumštances? A. convergent plate margins B. regional metamorphism C. differential pressure D. both B and C E. all of the above

Explanation / Answer

23) E. B and C

Metamorphic rocks are formed by the alteration of pre existing rocks such as igneous and metamorphic rocks by increasing temperature and pressure. The original textures of the pre existing rocks are also altered by the water and volatile matter.

24) B. liquifaction

25) E. all of the above

Related Questions

Navigate

• Browse (All)
• Browse 2
• Subjects

---

---

Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.