Vinoba Bhave University 2008 B.Sc Geology Honours - Question Paper

VH8 GL (4)

1. (a) Fin in therblanks of the following : 1 *5 = 5

(i)    The Purest form of Iron is_.

(ii)    The chemical composition of Chromite is_.

(iii)    In India Ruby Mica Occurs in_.

(iv)    Placer Deposits are formed as a result of_..

(v) Monazite and llmenite occur along the

beaches of_.

(b) Answer the following :    2*5 = 10

(i)    Name the process which gave the deposition of copper ore deposists of Singhbhum.

(ii)    Name the places of Jharkhand where Mica deposits occur.

(iii)    Mention two uses of Kyanite.

(iv)    Name the places of chromite deposits in India.

(v)    Name two ores of Lead and Zinc each.

Group - A

2.    Define Isostasy. Describe the different theories of Isostasy and its application.    10

3.    Describe the internal structure and chemical composition of the earth as revealed by the seismological evidences.    10

4.    Write short notes on any two of the following :10

(a)    Island Arcs

(b)    Mid Oceanic ridges

(c)    Wegeners view of Continental drift

5.    Describe the Geochemical evolution of the earth.

10

6.-'    Write short notes on any two of the following :10

(a)    Trenches

(b)    Core

(c)    Forces behind Continental drift.

Group - B

7.    Describe the different stages of Magmatic Concentration with suitable diagrams and examples.    10

(e)    Chalcopvnte

(f)    Graphite

10.    Describe the Iron deposits of India with reference to their mode of occurrence and geological distribution.    10

11.    Describe the Manganese deposits of India. 10