Neco Model Questions Vol1 2024 Geography Question 6

Practice essay / theory question 6 from the 2024 Neco Model Questions Vol1 Geography examination. This question covers Rocks .

Neco Model Questions Vol1 2024 Geography Essay / Theory

Topic: Rocks

Question 6 NECO_MODEL_QUESTIONS_VOL1 • 2024 • GEOGRAPHY • essay

A geologist examined a rock sample collected from a granitic intrusion in the Jos Plateau. Thin‑section microscopy gave the following modal percentages (by volume): - Quartz: 55% - Orthoclase feldspar: 30% - Plagioclase feldspar: 10% - Biotite mica: 5% No other minerals were observed.

Question Parts

( a )

Identify the rock type based on the mineral composition and explain the reasoning.

( b )

Describe the geological processes that lead to the formation of this rock type, including the source of its minerals and the environment of crystallisation.

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About This Question

This is Neco Model Questions Vol1 2024 Geography Question 6. It is one of the essay questions from the 2024 Neco Model Questions Vol1 Geography examination.

The question covers Rocks .

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