Neco Model Questions Vol1 2023 Geography Question 18

Practice objective / multiple choice question 18 from the 2023 Neco Model Questions Vol1 Geography examination.

Neco Model Questions Vol1 2023 Geography Objective / Multiple Choice Medium Difficulty
Question 18 NECO_MODEL_QUESTIONS_VOL1 • 2023 • GEOGRAPHY • objective

A metamorphic rock sample contains the minerals quartz, muscovite, garnet and sillimanite. Based on this mineral assemblage, (a) identify the metamorphic facies, and (b) estimate the approximate pressure (in kbar) and temperature (in °C) conditions under which the rock formed.

Answer Options

Correct Answer A. Upper amphibolite (granulite) facies; pressure ≈ 6-8 kbar; temperature ≈ 650-750 °C
B. Lower amphibolite facies; pressure ≈ 4-5 kbar; temperature ≈ 500-600 °C
C. Greenschist facies; pressure ≈ 2-3 kbar; temperature ≈ 350-450 °C
D. Blueschist facies; pressure ≈ 10-12 kbar; temperature ≈ 300-400 °C
Correct Answer
A
Correct Option:
Upper amphibolite (granulite) facies; pressure ≈ 6-8 kbar; temperature ≈ 650-750 °C

About This Question

This is Neco Model Questions Vol1 2023 Geography Question 18. It is one of the objective questions from the 2023 Neco Model Questions Vol1 Geography examination.

Difficulty level: Medium .

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