UPSC Geology 2025

Answer the following questions in about 150 words each: (a) Discuss the position of Astroid belt within the solar system and comment on the composition of meteorites. (10 marks) (…

(a) What do you understand by continental drift ? Discuss various geological evidences in favour of continental drift. (20 marks) (b) Geomorphic diversity is controlled by a numbe…

(a) Waves are responsible for modifying the coastal geomorphology. Justify the statement giving suitable examples and neat diagrams. (20 marks) (b) Explain how the Remote Sensing…

(a) On the basis of dip isogons describe the classification of folds with neat diagrams. (20 marks) (b) What are volcanoes ? Describe various causes and products of volcanism. (15…

Answer the following questions in about 150 words each: (a) Discuss favourable conditions for fossilization. (10 marks) (b) Discuss different concepts of biozonation with neat dia…

(a) Discuss the evolutionary lineage of Equidae and comment on its migration. (20 marks) (b) Give the lithostratigraphic classification and distribution of Delhi Supergroup. Also…

(a) What do you understand by boundary problems in stratigraphy ? Discuss Cretaceous/Palaeogene (Cretaceous/Tertiary) boundary problem giving Indian examples. (20 marks) (b) What…

(a) Discuss the interrelationship amongst Porosity, Permeability and Hydraulic conductivity. How they are important in groundwater movement ? A sediment sample with a cross sectio…

Answer the following questions in about 150 words each: (a) Describe the symmetry elements shown by the normal class of the orthorhombic system. What are the different forms for t…

(a) Give a detailed account related to the classification of crystals into different crystallographic systems based on symmetry elements. (15 marks) (b) Describe the structure of…

(a) What are migmatites? Describe the important types of migmatites and the processes of their formation. (15 marks) (b) Draw a neat labelled sketch for the albite-anorthite phase…

(a) Discuss the genesis of any four sedimentary structures which are helpful in palaeocurrent analysis. How are the palaeocurrent patterns helpful in establishing the depositional…

Answer the following questions in about 150 words each: (a) What do you understand by metallogenic epochs and provinces? Discuss any two major metallogenies in India. (10 marks) (…

(a) Give an account of geology, mode of occurrence, genesis and distribution of Pb-Zn deposits of Aravalli region. (15 marks) (b) Give the distribution of petroliferous basins of…

(a) Discuss the direct and indirect geochemical methods used for prospecting of hydrocarbon deposits. (20 marks) (b) What are the physiological and morphological changes of the pl…

(a) What do you understand by isomorphism and polymorphism? Discuss monotropy by citing example of diamond and graphite. (20 marks) (b) What are the most important conditions nece…