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Posted By: Vidya Member Level: Diamond Posted Date: 20 May 2008
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2005 Kerala University B.Sc Geology Paper VI - PETROLOGY Question paper
FINAL YEAR B.Sc. DEGREE EXAMINATION, MARCH/APRIL 2005
Part III - Group VI -- Geology
Paper VI - PETROLOGY
(New Scheme from 2000 Admissions)
Time : Three Hours
1. Name the following
1. Rock is an aggregation of
2. Hot molten liquid is called
3. Solidification of Magma leads to-------------4. Granite exhibits. what type of texture
5. Syenite is rich in
6. Sedimentary rocks are also known as
7. Cross beds are produced when
Maximum : 60 Marks
rock type.
8. If a Gneiss is formed from igneous rock due to metamorphism. is called
9. During metasomatisation the dominant factor is
10. Partial melting of rock is called
(10 x ½ = 5 marks)
II. Define the following:-
1. Magma. 2. Allotriomorphic.
3. Magmatic differentiation.
5. Prograde metamorphism.
7. Amphibole facies of metamorphism.
9. Sedimentary basins.
4. Depositional environment.
6. Idioblastic minerals.
8. Anetaxic.
10. Current bedding.
(10 x 1 = 10 marks)
III. Describe each of the following in a paragraph :-
1. Albite-anorthite content in Plagioclase. 2. Classification of igneous rocks.
3.. Field characters of shales. 4. Pyrometamorphism.
5. Sericilization. 6. Eutectic Crystallization.
7. Pneumatolysis. 8. Petrographic province.
9. Authigenesis. 10. Basalts.
(10x2 ½ =25 marks)
IV. 1. Write an essay on Origin of Igneous rocks.
Or
2. Give an account of Bowen's reaction series.
V. 1. Give an account of origin and deposition of sedimentary rocks.
Or
2. What are Lamprophyres ? Add a note on their paragenesis.
(1 x 10= 10 marks)
(1 x 10= 10 marks)
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