UPSC Geology Optional Question Paper 2019: CS (M) Geology Paper-I
Baljit Dhaka
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UPSC Geology Optional Question Paper 2019: CS (M) Geology Paper-I

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UPSC Geology Optional Question Paper 2019

Civil Service Mains Exam: Geology Paper-1 (2019)

In this article, we will discuss UPSC geology optional question paper 2019 paper-1.

Marks-250                                                                                                                                 Time: Three Hours

Question Paper Specific Instructions:

Please read each of the following instructions carefully before attempting questions.

  • There are EIGHT questions divided into two sections.
  • A candidate has to attempt FIVE questions in all.
  • Questions no 1 and 5 are compulsory and out of the remaining, THREE are to be attempted choosing at least ONE from each section.
  • The number of marks carried by a question /part is indicated against it.
  • Word limit in questions, wherever specified should be adhered to.
  • Attempts of questions shall be counted in chronological order. Unless struck off, an attempt of a question shall be counted even if attempted partly. Any page or portion of the page left blank in the answer book must be clearly struck off.


Q1. Answer the following questions in about 150 words each: 10x5=50 marks
(a) Discuss three indirect methods and three direct methods of dating geological formations and geological events. 10 marks

(b) What are the characteristics of glacio-fluvial deposits? Discuss five glacio-fluvial depositional landforms with neat diagram. 10 marks

(c) Explain the differences between satellite remote sensing and aerial photographs. What are their mutual advantages and limitations?  10 marks

(d) Draw a cross-section from north to south and discuss the tectonic framework of the Himalaya.  10 marks

(e) How do you differentiate between brittle and ductile deformation in rocks? 10 marks

Q2. (a) What are folds? Describe the morphology of the folds. Discuss the criteria of their recognition in the field. 20 marks

(b) What are the evidences supporting continental drift' theory and what are its limitations? 15 marks

(c) Describe the spatial, spectral, radiometric and temporal resolutions of a satellite image. Discuss the spatial and temporal resolutions needed for geological, climatological, emergency response and meteorological study. 15 marks

Q3. (a) Briefly describe Global Positioning System (GPS) and its characteristics, its different segments and GPS satellite signals. List any five applications of GPS.  20 marks 

(b) With the help of neat sketches, describe the effect of faults on outcrop pattern. 15 marks

(c) What is volcano? Discuss four positive relief features and four negative relief features associated with a volcano. 15 marks

Q4. (a) What are 'island arc' systems? What are its major characteristics? Draw a schematic section through an island arc system and describe all its components.  20 marks

(b) What is meant by the term 'drainage pattern'? Draw neat diagrams and illustrate four different drainage patterns, and discuss their significance with respect to lithology and structure. 15 marks

(c) What is rock cleavage? Give the significance of cleavage in deciphering the structure of a folded area. 15 marks


Q5. Answer the following questions in about 150 words each: 10x5=50 marks
(a) Define index fossils and give the characteristics of a good index fossil.

(b) Describe the mammalian fauna in the Siwalik Supergroup and add a note on the age. 

(c) Give a short geological account of Deccan volcanic province'. 

(d) Describe the geological factors to be considered in the construction of tunnels.

(e) Describe different types of aquifers and list the characteristics of a good aquifer. 

Q6. (a) Define microfossil. Describe the characteristics like ecology, shape, size, composition and age range of Foraminifera. 20 marks

(b) What are cratons? Give a brief account of stratigraphy and evolution of any  one Indian craton. 15 marks

(c) What are the factors that must be considered during the geological investigation for locating a dam site? 15 marks

Q7. (a) Describe the groundwater provinces of India and comment on their hydrogeological potential. 20 marks

(b) Write short notes on the following: 15 marks
(i) Lower Vindhyan Group
(ii) Talchir Formation 
(iii) Upper Siwalik Group

(c) Describe the evolution of Equidae from Eohippus to Equus.  15 marks

Q8. (a) Give an account of stratigraphy of the Aravalli Supergroup. 20 marks

(b) Define 'specific yield' and 'specific retention' of aquifers. Explain how they are related to porosity with the help of equations.  15 marks

(c) What are the objectives of the scientific nomenclature of species? Describe the binomial nomenclature. 15 marks