l.

Write short notes on each of the following:


Application of Powder X-ray diffraction method in the study of silicates.


Lanthanite contraction in REEs.


Eutectic crystallization and related textural features.


Tectono-magmatic setting for carbonatites.


Distinguish between ACF and AKF diagrams.


Explain paired metamorphic belts.


Significance of cross bedding and current beddings.

Distinguish betweenArkose andGreywacke.


Significance of'PM10' and its impact on respiratory
system.



Seismic zonation map of India.



2.
Discuss the structure, composition, physical and optical properties of garnet.


Derive an equation used in the radiometric Rb-Sr age determination of rocks. Comment upon Concordia and
Discordia.

3.
Discuss symmetry elements of the normal class o f
Monoclinic System. Add a note on the crystallographic notation.


What do you understand by coordination number?
Discuss various types of silicate structures based on coordination number.


Discuss the geochemical classification of trace elements. Give an account of the role of L.I.L. (Large Ion Lithophiles) in magmatic crystallization.




4. Discuss crystallization o f a ternary magma, citing an example of Feldspar.



What do you understand by modal and norm? Discuss
IUGSclassification of basic and ultrabasic rocks.Add
a note on TAS diagram.

5. Discuss incongruent melting citing an example of
Forsterite-Silica system. Give an account on reaction rim corona structure.


Discuss about open and closed systems of magmatic
crystallization. Add a note on the layered igneous
complexes.


Discuss the age, duration and nature of Deccan
Volcanism in India. Add a detailed note on the and 'pahoehoe' type lava flows.




6.

What do you understand by porphyroblasts Explain
their significance in metamorphic terrains, citing an example of garnet in the mica schist.

Describe the characteristics and mineral assemblages of Green Schist Facies of metamorphism. Add a note on the mutual relationship between sub-facies and conditions of metamorphism.


7.

Give a brief account of Blue Schist and Eclogite Facies of metamorphism and their relationships to plate
tectonics.


What is theprincipleofGamet-BiotiteThermornerry?
Discuss its limitations and applications to metamorphic rocks.




Write a critique on "Facies concept of Metamorphism"



8. What are the heavy minerals? Discuss the application of heavy minerals in the determination of provenance.


How would you distinguish between Arkose and
Greywacke? Discuss their depositional environments.

9.
Discuss the physicochemical factors, which play an important role in the sedimentation. whet are the
products of sedimentation?



Discuss in detail about the formation of clay minerals. Give your remarks on their environment of formation.


Describe the concept of sedimentary environment and add a note on the parameters.





10. What is coastal erosion? Discuss the causes and mitigation of coastal erosion and add a note on such incidences with reference to Indian context.


Discuss the causes and impacts o f an earthquake. Give an account of the precautionary measures to be taken
against earthquake hazards.

11. How are the satellite imageries useful in environmental planning Give an account of the factors controlling landslides.


What do you understand by global warming and climate

change? Discuss the effects of C02 on green-house

effect.


What is Cryosphere? Discuss the effects of Ozone

depletion on ice sheets and sea level fluctuations.