IAS Mains Geology Papers 2003

IAS Mains Geology 2003

Paper I

Section A

  1. Answer any three of the following, each within 200 20 X 3 = 60

    1. How do structure, climate, topography and vegetation influence rocks in nature?

    2. Mantle of the earth.

    3. Significance of Remote Sensing in small mining industry.

    4. Differen1iate between the following pairs:

      1. Dome and basin

      2. Horst and graben

      3. Overthrust and underthrust faults

      4. Hanging wall and footwall 60

  2. Discuss the following:

    1. Importance of rain water harvesting for living beings

    2. Precautions in construction of buildings in earthquake-prone zones.

  3. Describe the following: Drainage patterns of Indian Sub-continent in the field? 60

Section B

  1. Answer any three of the following, each within 200 words: 30 X 2 = 60

    1. Pleistocene glaciation

    2. Advantages of photo-geology over conventional geological survey.

  2. Discuss the significance and mechanism of sea-floor spreading.

  3. Define unconformity and describe its various types.

    1. How tan they be recognized

    2. Role of geologists in the construction of bridge

    3. Role of microfossils in correlation of rock formations

    4. Describe the morphology of Gastropoda shelf.

  4. Discuss the evolutionary changes in the morphology of Ammonoids. 60

  5. Describe the following:

    1. Principles of stratigraphic correlation

    2. Significance of glossopteris and ptylophyllum in the study of Gondwana

Paper II

Section A

  1. In about 200 words each, explain any three of the following:

    1. Double refraction and birefringence 20

    2. Textures in volcanic rocks: Petrogenetic significance 20

    3. Retrograde metamorphism: The assemblage minerals, textures and their significance 20

    4. Ripples, Dunes and cross-breeding: Origin and significance of Phosphate group of minerals. 3. Write explanatory notes on the following: Characteristics. 30 indicators to identify different source rocks. 60

  2. Define provenance and its importance in Sedimentology. Describe the provenance

    1. Stratabound and stratiform deposits: Characteristics and examples. 20

    2. Heavy media separation as ore-dressing process

    3. Isomorphism and isomorphous mixture, examples.

    4. Fertilizers/and their impact on groundwater pollution

  3. Describe the chemical composition, physical properties and mode of occurrence

    1. Carbonatities; their mode of occurrence, petrography and petrogenesis. 30

    2. Granulite terrains of India: Their mineral assemblages and petrogenetic

Section B

  1. In about 200 words each, write notes on any three of the following:

  2. Write notes on the following, in brief:

    1. Pyrometasomatic deposits: Their genesis and general characteristics. 30

    2. Placer deposits of thorium in India: Their geological setting and mode of

  3. Describe the methods of geological prospecting giving their applications and limitations. Add a note on geobotanical prospecting methods.

  4. Write notes on the following, in brief:

    1. Goldschmidt's geochemical classification of the elements with examples.

    2. Legislative measures for environmental protection in India.