IAS Mains Geology 2003
Paper I
Section A

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

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

Mantle of the earth.

Significance of Remote Sensing in small mining industry.

Differen1iate between the following pairs:

Dome and basin

Horst and graben

Overthrust and underthrust faults

Hanging wall and footwall 60

Discuss the following:

Importance of rain water harvesting for living beings

Precautions in construction of buildings in earthquake-prone zones.

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

Section B

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

Pleistocene glaciation

Advantages of photo-geology over conventional geological survey.

Discuss the significance and mechanism of sea-floor spreading.

Define unconformity and describe its various types.

How tan they be recognized

Role of geologists in the construction of bridge

Role of microfossils in correlation of rock formations

Describe the morphology of Gastropoda shelf.

Discuss the evolutionary changes in the morphology of Ammonoids. 60

Describe the following:

Principles of stratigraphic correlation

Significance of glossopteris and ptylophyllum in the study of Gondwana