M.Sc. (Semester II) (CBCS) Examination Mar/Apr-2018
Applied Geology
IGNEOUS AND METAMORPHIC PETROLOGY
Time: 2½ Hours
Max. Marks: 70
Instructions: Answers any five questions. All questions carry equal marks. Question 1 is compulsory. Answer any two questions from Q.2, 3 4. Answer any two questions from Q.5, 6 7. Draw neat and labeled diagrams wherever necessary.
Q.1
Tick mark the correct answers:-
14
Find the odd
Eclogite
Amphibolites
Pyroxenite
Charnockite
The term window to mantle is applied to an altered porphyritic mica peridotite containing olivine and phlogopite and containing diamonds is commonly known as
Carbonatite
Eclogite
Kimberlite
Granulite
The Charnockite found in Eastern ghat are characteristic rocks of
Hornblend granulite
Hornfels

Pyroxene granulite
None
IUGS has recommended a classification scheme called Total Alkaline Silica for
Volcanic rocks
Plutonic rocks
Hypabyssal rocks
Mafic rocks
The S-type granites can be distinguish from I type granite as S-type granite is
Per-aluminous
Syn-aluminous
Meta-aluminous
None
Identify the mineral characteristically appearing in a silica deficient metamorphic calcareous sediments.
Corundum
Forsterite
Diopside
Cordierite
Harzburgite is type of igneous rock.
Volcanic rock
Ultramafic rocks
Ultrapotassic rock
Lamprophyre
Which of the following is not monomineralic rock?
Dunite
Pyroxenite
Anorthosite
Syenite
Page 2 of 2
SLR-UB-35
The migmatite are formed by following mechanism
Granitization
Anatexis
O
Metamorphic differentiation
All of the above
10) The repetition of metamorphic event is called as
Metasomatism
Polymetamorphism
Regional metamorphism
None
11) In the Deccan Volcanic province, Zeolites and secondary minerals are typically hosted by
Aa type lava
Pahoehoe lava
Block lava
None
12) Match the type of metamorphism with the geotectonic environment.
1. Regional metamorphism
a. Fault zones
2. Burial metamorphism
b. Continental shelves
3. Contact metamorphism
c. Orogenic belts
4. Cataclastic metamorphism
d. Intrusion aureoles
4-d
4-a
4-b
4-a
13) The rock that is essentially consists of quartz tourmaline is
Pegmatite
Schorl
Graisen
Hornfels
14) Under what type of crystallization do you expect univariant condition?
Solid solution
Eutectic
Peritectic
None
Q.2
What is regional metamorphism? Add note on the metamorphic products of pelitic and siliceous protolithic rocks.
14
Q.3
Describe type of magmatism and metamorphism related to convergent plate boundaries.
14
Q.4
Discuss the behavior of crystallization of orthoclase-albite system at various PH2O and add a note on perthite texture.
14
Q.5
Write note
14
IUGS classification of plutonic rocks
Kimberlites
Q.6
Write briefly on the following:-
14
Retrograde metamorphism
Deccan basalts
Q.7
Enumerate in short
14
Index minerals
Lamprophyre