12. Write notes on any two of the following

Age of Deccan Traps


Mineral Wealth of Archeans


Cretaceous Tertiary Boundary Problem.


HRI-28354 4

45 Total No. of Printed Pages 4 Roll No. ............................ 1[CCE.M]1
Geology-I

Time Three Hours Maximum Marks 300

INSTRUCTIONS

Answers must be written in English.


The number of marks carried by each question is indicated at the end of the question.


The answer to each question or part thereof should begin on a fresh page.

Your answers should be precise and coherent.


The part/parts of the same question must be answered together and should not be interposed between answers to other questions.


Candidates should attempt question no. 1 which is compulsory and five out of the remaining questions, selecting one question from each section.


If you encounter any typographical error, please read it as it appears in the text book.
(viii) Candidates are in their own interest advised to go through the General Instructions on the back side of the title page of the Answer Script for strict adherence.

400 HRI-28354 1 Contd.

No continuation sheets shall be provided to any candidate under any circumstances.


Candidates shall put a cross on blank pages of Answer Script.


No blank page be left in between answer to various questions.



1. Write notes on the following

Volcanic Belts of the world


Geomorphic features of Indian Sub Continent


Petrofabric analysis


Siwalik Vertebrates


Standard Stratigraphic Scale. 5×15=75



SECTION-A

2.
Write a detailed account of Plate Tectonics. 45

3.
Discuss the following


Interior Structure of the earth


Radio Active Dating of the earth. 45



4.
Briefly describe the following


Island arcs


Isostasy


Geosynclines. 45





SECTION-B

5.
Give an account of the various types of drainage patterns and their significance. 45

6.
Write an essay on topography and its relation to structures and Lithology. 45


OR
Give a detailed account of geomorphic cycles and their significance.


SECTION-C


7.
Justify how stress and strain ellipsoids are useful to understand rock deformation. 45

8.
Describe any two of the following 45


Foliation and Lineation


Mechanics of folding


Tectonic framework of India.




OR
Describe the following with neat sketches.

Recumbent fold


Disconformity


Horst and Graben


Columnar and Prismatic Joints.




SECTION-D

9. Write an essay on the morphology, classification, geological history and evolutionary trends of Trilobites. 45
10. Give a detailed account of types of micro fossils and their significance in Petroleum Exploration. 45 OR Describe any two of the following

Evolution of Horse


Modes of preservation of Fossils


Types of Corals.



SECTION-E

11. Discuss in detail the stratigraphic succession, lithology and economic importance of Gondwana System. 45
HRI-28354 2 Contd. HRI-28354 3 Contd.