CIVILS MAINS 2013 GEOLOGY
Paper I
Time allowed: Three Hours

Maximum Marks: 250

Question Paper Specific Instructions

Please read each ofthe following instructions carefully before attempting questions:
There are EIGHT questions divided in two SECTIONS and printed both in HINDI and in ENGLISH.
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 ofmarks carried by a question I part is indicated against it.
Answers must be written in the medium authorized in the Admission Certificate which must be stated clearly on the cover of this Question-cum-Answer Booklet in the space provided. No marks will be given for answers written in a medium other than the authorized one.
Word limit in questions, wherever specified, should be adhered to.
Diagrams Sketches, wherever required, may be drawn in the space provided for answering the question itself
Attempts of questions shall be counted in chronological order. Unless struck off, 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.

SECTION A

Ql. Write brief notes on the following in about 150 words each: lOx 5=50
Earth's interior as revealed from seismic waves 10
Relationship between Volcanic and Earthquake belts 10
Aeolian landforms 10
Difference between brittle and ductile deformation 10
Tonal variation in aerial photographs, and interpretation of lithology and structure 10

Q2. Describe the following:
Application of Radioactivity in determining age of rocks 20
Oceanic Oceanic plate convergence boundaries 20
Geological application of Geographic Information System 10


Q3. Describe the following:
The classification and mechanics of faults 20
Types of unconformities and their significance 20
Mechanism of formation of island arcs with examples10

Q4. Write notes on the following:
Types of weathering 20
Isostasy 20
Paleomagnetic Reversals 10


SECTIONB

Q5. Write critical notes on the following in about 150 words each: lOx 5=50

What are the prerequisites for a fossil to be useful in biostratigraphy? 10
How are stable isotope studies useful in paleoceanography? 10
How is Proterozoic subdivided? 10
Cd) What are the evidences of active tectonism in Himalaya? 10
How is quality of Aquifer related to porosity and permeability? 10

Q6.Explain the following:
Geological investigations III construction of Hydro-Power projects in Himalaya. 20
Closing and opening of Cenozoic gateways and their implication on paleoclimate. 20
Pliocene Pleistocene boundary. 10

Q7. Answer the following:
Describe various methods for Ground water exploration. 20
Explain Hydrological cycle with neat diagram. 20
Discuss types of Lithostratigraphic units with Indian examples. 10

Q8. Answer the following:
Discuss Indian Ophiolite suites and their significance. 20
Discuss the Paleogeography of India during transition from Paleogene to
Discuss the Permian Triassic boundary. 10