UPSC Mains GEOLOGY-PAPER-II 2012

39 Questions • 421 Marks • With Detailed Model Answers

1
12 Marksmedium
Write on the following with diagrams as necessary :
2
5 Marksmedium
Acute bisectrix interference figure of a biaxial crystal.
3
5 Marksmedium
Principle of X-ray diffraction study of a crystalline mineral.
4
5 Marksmedium
Distinguish andesite from dolerite by studies in thin sections.
5
5 Marksmedium
How the direction of flow of the sediment-carrying fluid is determined in a rock ?
6
5 Marksmedium
Write on zones of metamorphism with special reference to an area in India.
7
20 Marksmedium
Discuss basis of classification of silicate structures of minerals.
8
20 Marksmedium
Describe with a diagram the approximate limits of solid solution in the felspar group of minerals.
9
20 Marksmedium
Write on the principle of stereographic projection of crystals. Draw a sketch of the stereogram of a tetragonal crystal.
10
20 Marksmedium
Show how you determine the pleochroic scheme of a biaxial mineral.
11
10 Marksmedium
Write notes on the following with diagrams.
12
4 Marksmedium
Dispersion of axial angle in brookite (TiO2)
13
4 Marksmedium
Powder X-ray diffraction method
14
4 Marksmedium
Granulose structure and its origin
15
4 Marksmedium
Trachytic and graphic texture
16
20 Marksmedium
Write a note on the cosmic abundance of elements and their significance.
17
20 Marksmedium
Draw the diagram of Mg2SiO4 - Fe2SiO4- SiO2 and write its implication in the crystallization of basic magma.
18
20 Marksmedium
Write on the metamorphism of argillaceous rocks.
19
Marksmedium
Write on the geology and origin of stratiform and alpine-type chromite deposits in the world.
20
Marksmedium
Enumerate the main factors of accretion of Mn-nodules on the ocean floor and their future mining possibilities.
21
Marksmedium
Write on geophysical methods of exploration of oil deposits.
22
Marksmedium
Comment on application of air-borne survey in mineral exploration.
23
60 Marksmedium
Describe effects of long term application of nitrate fertilizers on ground water regime.
24
10 Marksmedium
Write on the genesis and occurrences of the following mineral deposits in India :
25
3 Marksmedium
Sillimanite
26
3 Marksmedium
Baryte
27
3 Marksmedium
Mn-ores
28
10 Marksmedium
Write short notes on :
29
3 Marksmedium
Chondrite and tektite
30
3 Marksmedium
Duty and responsibility of sample collector in mineral prospection
31
3 Marksmedium
Mercury pollution
32
Marksmedium
Write notes on the following with sketches as necessary :
33
20 Marksmedium
Name and discuss on Antarctic meteorites originating from the Moon.
34
10 Marksmedium
Kamacite and octahedrite.
35
10 Marksmedium
Meteorite crater in India and its age.
36
20 Marksmedium
Anorthosite provinces of India and their origin.
37
20 Marksmedium
Name the minerals used as refractories in Industries and cite their respective occurrences in India.
38
20 Marksmedium
Write on the sea-level changes through the geological history, and the associated environment and life, as known from fossil and sedimentary records.
39
20 Marksmedium
Explain marine pollution in India. Comment on the analytical techniques that are widely used for determining toxic elements in water.