IAS Mains Geology Papers 2002
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IAS Mains Geology 2002
Paper I
Section A
- Answer any three of the following, each within 200 words: (20 × 3 = 60)
- What is geochronology? How is it used for the benefit of the earth-science studies?
- Show how structure and lithology are o architects of morphology of landforms.
- What is Geographic Information Systems and how is it applied for societal benefits?
- Plunge of folds and direction of movement in fault-planes can be traced by some lineations.
- There are other lineations as well produced during folding/faulting episoles. Describe these lifleations.
- Why are volcanoes associated with ‘Ring of fire’ Discuss the genesis of a volcano and write a note on their products (60) .
- Describe: (30 × 2 = 60)
- Geomorphological studies can be applied to Prospecting of minerals, civil constructional studies.
- Aerial photographs and satellite imageries considerably assist the economies of a country.
- Answer the following questions
- How are faults identified in the field?
- Classify faults based on their geometry and movement.
- Which landform types are produced by faulting (20 × 3 = 60) ?
Section B
- Write on any three of the following, each within 200 words (20 × 3 = 60)
- Evolution of suture-lines of Cephalopods
- What are Outlier, Window, Tatrot beds and Gangamopteris?
- Upper Cretaceous-Lower Eocene igneous activity in India
- Ground-water recharge
- Write critical notes on the following (15 × 4 = 60)
- Geological history of Graptoloids
- Fossil-study and Palaeoclimate inference
- Lower Gondwana flora
- Progressive changes in the evolution of horse
- Answer the following questions
- Litho-, bio-, chrono-and magneto-stratigraphic studies suggest different aspects of stratigraphy. Comment (30) .
- Describe the Precambrian stratigraphy of Peinsular India (30) .
- Answer the following questions
- While certain rocks are excellently water-bearing, others do exist without containing a drop of water. Discuss if this is possible (22) .
- Answer the questions
- What aspects a geologist should investigate for selecting a tunnel site on a hill-slope?
- Which rocks are chosen for heavy construction purpose (8) ?
Paper II
Section A
- In about 200 words each, explain any three of the following:
- Give an account of twinning in minerals (20)
- Diopside-anorthite system (20)
- Fades of regional metamorphism (20)
- Heavy minerals and their significance (20)
- Give the chemical composition and optical properties of Amphihole group of minerals. Add a note on their classification (60)
- Write explanatory notes on the following:
- Give classification and describe petrography and petrogenesis of charnockites (30) ,
- ACF and AKF diagrams and their utility (30)
- Give the classification of sandstones. Add a note on their depositional environment (60) .
Section B
- In about 200 words each, write notes on any three of the following:
- Controls of ore localisation (20)
- Types of chemical bonds (20)
- Explain the techniques of sampling (20)
- Pollution of sea (20)
- Write notes on the following, in brief:
- Conservation and utilisation of mineral resources (30)
- Describe briefly the geology and structure of the Bombay High Petroleum Resources.
- Comment on their economic importance (30)
- Write notes on the following:
- Give an account of the important methods of mining of metallic ores (30)
- Describe the mineralogy, geology and ore genesis of copper deposits of Khetri Mines (30)
- Write explanatory notes on the following:
- Structure and composition of the Earth (30) .
- Impact of natural hazards on environment. Mitigating measures of any one of these natural hazards (30) .