CSE-Mains 1987: Geology
IAS Prelims & Mains GS and Optional Lectures, Model Answers, and Notes at doorsteptutor.com.
Paper-I
Section A
- Answer any three of the following in about 200 words each:
- Narmada-Son Lineament
- Plate tectonics and Continental drift
- Topography related to structure and nature of rocks.
- Criteria for recognizing faults in field.
- Discuss the mechanism of folding in detail.
- In the light of modem concept discuss the origin of continents and oceans.
- Explain how radioactivity as helped in sorting out some of the geological problems.
Section B
- Answer any three of the following in about 200 words each:
- Pre-Cambrian life
- Lower Palagozoic Vertebrates
- Base of Cambrian
- Code of stratigraphic classification and nomenclature
- Describe the geology of the pre-Cambrian rock of Singhbhum region in the light of recent morphotectonic work.
- Describe the morphology and evolutionary trends in Trilobites.
- Discuss the applied and academic important of micros fossils in bore-hole correlation geology.
Paper-II
Section A
- Write notes on any three of the following in about 200 words each:
- Symmetry in crystals
- Optical accessories
- Isomorphism
- Deccan basalts
- Explain how stereographic projections are used to represent crystal symmetry.
- Give an account of the, structural classification of silicates.
- What are interference colours? How are they produced in minerals? Explain.
Section B
- Write notes on any three of the following in about 200 words each:
- AFC diagram
- Hydrothermal ore deposits
- Watertable
- Mineral processing
- Write an essay on the National Mineral Policy.
- Give an account of the classification of igneous rocks.
- What is Prospecting? Give a brief description of the various techniques of prospecting.