IAS Mains Geology Papers 2006

IAS Mains Geology 2006

Paper I

Section A

  1. Attempt any THREE of the following in about 200 words each: (20 × 3 = 60)

    1. Mountain building processes.

    2. Application of Geomorphology to. Environmental problems.

    3. Electromagnetic spectrum.

    4. Principles of geological mapping.

  2. What is sea-floor spreading? Discuss its evidences and mechanism (50 + 10 = 60).

  3. Discuss the following: (30 × 2 = 60)

    1. Geomorphological features of India.

    2. Advantages of photogeology over conventional survey.

  4. What are different types of unconformities? Why are they significant in the study of geological history (50 + 10 = 60)?

Section B

  1. Discuss any THREE of the following in about 200 words each: (20 × 3 = 60)

    1. Application of microfossils in p also climatic studies

    2. Biostratigraphic correlation

    3. Importance of rain-water harvesting

    4. Factors controlling the choice of bridge sites

  2. Discuss with suitable sketches, the morphology of Brachiopod. Name five biachiopods of stratigraphic significance with their age (30 + 30 = 60)

  3. Describe the following: (30 × 2 = 60)

    1. Volcanic activities in Rajmahal and Deccan igneous provinces

    2. K-T boundary succession in India.

  4. Discuss the following: (30 × 2 = 60)

    1. Ground water recharge and various recharging methods.

    2. Geological investigations for tunnel alignment.

Paper II

Section A

  1. In about 200 words each, explain any three of the following: (20 × 3 = 60)

    1. Crystallographic axes

    2. Deltaic environment

    3. Crystal fractionation in magmas

    4. Phase rule

  2. What are tectosihcates? Describe the minerals of feldspar group giving their chemical composition physical properties and occurrence (60)

  3. Write explanatory notes on the following:

    1. Deccan Trap volcanic province in India (30)

    2. Metasomatism and granitisation (30)

  4. Describe the sedimentary structures & their significance (60).

Section B

  1. In about 200 words each, write notes on any three of the following: (20 × 3 = 60)

    1. Environmental effects of opencast mining

    2. Offshore petroleum and gas resource of India

    3. Earthquake risk in India

    4. Classification of reserves

  2. Write notes on the following:

    1. Formation of ore-deposits in magmatic concentration (30)

    2. Marine manganese nodules as a resource (30)

  3. Write notes on the following:

    1. Techniques of sampling (30)

    2. Longwall mining of coal (30)

  4. Write explanatory notes on the following:

    1. Anthropogenic toxic elements in urban environment (30)

    2. Types of natural hazards with reference to damage and control of floods in India (30)