UPSC CGGE 2017 Question Paper Geology Paper III

ZLX-T-GLY
g e o lo g is t exam -2017

GEOLOGY

P a p e r — III

T im e A llow ed : T h r e e H o u r s M a x im u m M a r k s ; 2 0 0

QUESTION PAPER SPECIFIC INSTRUCTIONS

P lease read ea ch o f th e follow ing in str n c tlo n s carefu lly
before a ttem p tin g q u estio n s.

T here are ELEVEN q u e stio n s divided u n d e r SIX Sections.

C andidate h a s to a tte m p t SIX q u estio n s in all.

The ONLY questio n in Section A is com pulsory.

O ut of th e rem aining TEN q u estio n s, th e can d id ate h a s to a tte m p t FIVE, choosing ONE
from each of th e o th er S ectio n s B, C, D, E an d F.

The n u m b e r of m a rk s carried by a q u e s tio n /p a rt is in d icated a g a in s t it.

Symbols, ab b reviations a n d n o ta tio n s have their u s u a l s ta n d a rd m ean in g s.

A ttem pts of q u e stio n s sh all be c o u n ted in seq u en tial order. U n less s tru c k off, a tte m p t of a
question sh all be c o u n ted even if a ttem p ted partly.

N eat sk etch es a re to b e draw n to illu stra te an sw ers, w herever required.

W herever required, g ra p h s /ta b le s a re to be draw n on th e QCA B ooklet itself.

Any page or portion of th e page left b la n k in th e QCA B ooklet m u s t be clearly stru c k oflf.

A nsw ers m u s t be w ritten in ENGLISH only.

I P.T.O.

S e c t io n — A

1. Write on/A nsw er each of th e following in sh o rt w ith sketches, wherever necessary :
S’*10-50

(a) D istribution of bauxite deposits in India

fb) Mineral resources of sea

(cf What are th e applications of m ^ n e tic m ethod of geophysical exploration?

(d) V arious types of iron ore deposits, their host rocks and ore m ineral
assem blages

(e) W hat are old w orkings? W hat is the significance of old w orkings in m ineral
prospecting?

(f} Explain syngenetic an d epigenetic geochemical anom alies with exam ples of ore
deposits hosted by igneous rocks.

(g} Calculation m ethod of calorific value from O outal’s form ula

(h) Primary stratigraphic trap s

(i) Im portance of in situ stress m easurem ents

(i) Favourable geolo^cal conditions for toppling failure

S e c tio n —B
A ttem pt a n y one question

2. (a) Describe in detail ab o u t th e m odes of occurrence, origin, distribution and
reserves of m inerals u sed in glass industries in India. 15

(b) D iscuss in detail th e salient features of National Mineral Policy of India. 15

3. (a) Describe the geological characteristics an d distribution of iron ore deposits in
India. 10

(b) Write ab o u t th e distribution of some im portant gem stones in India. 10

(c) Describe th e evolution of m ineral legislation system in India. 10

S e c tio n —C

Attempt any one question

4. (a) How axe th e seism ic waves classified and w hat is their im portance? E num erate
the general schem e of seismic prospecting operation. 15

(b) How do you explore a diam ondiferous pipe using geophysical m ethods? 15

5. (a) Explain the genesis of stratiform chromite deposit in ultram aflc rock. 10

(b) W hat are th e different types of w ater th a t participate in ore-form ing processes?
How a re m etals from source rock dissolved in w ater an d subsequently
precipitated to form ore deposits? 10
{c) W hat are the criteria for identifying prim ary fluid inclusions in m inerals? W hat
is th e relation between degree of fill and density of fluid inclusion? 10

S e c t io n — D

Attempt any one question

6. (a) W hat axe the scope and objectives of detailed exploration stage of a mineral
exploration program m e? Why is exploratory m ining carried o u t? 15

(b) Bxplain various m ethods of identifying geochemical anom alies based on the
concentration of one indicator clem ent in sam ples analyzed during
geochemical exploration. 15

7. (a) Rock-ore association is an im portant criterion in selection of a re a for m ineral
prospecting. Explain with examples. 10

(b) What are the criteria by which an indicator or pathfinder elem ent is chosen for
geochemical exploration program m e? 10

(c) A coppcr mineralized quartz vein is exposed over a strike length of 120 m. Five
trenches arc m ade across the w idth of th e vein a t uniform interval of 30 m. The
w idth of th e quartz vein in these trenches and assay value of copper in the
sam ple of quartz vein collected from each trench are given below ;
Trench No. Wdih {m) >4«say Value of
Copper (wt %)
1 0-6 0-5
2 0-4 0-7
3 0-3 1-3
4 0-3 1-2
5 0-2 0-8
Calculate the average grade of coppcr in th e quartz vein. 10

3 I P.T.O.

SECTION— E

A ttem pt any o n e question

8. (a) W hat are th e general avenues for petroleum occurrence? Write an account on
th e origin an d classification of reservoir rocks. 15

(b) Describe various geological and geophysical techniques of exploration of
n a tu ra l hydrocarbons. 15

9. (a) Write an acco u n t on geology an d evolution of Krishna-Godavari basin. 10

(b) r)e»cribe th e ultim ate analysis of coal an d its applications. 10

(ci W hat are th e chief prim ary ore m inerals of u ran iu m ? Write an acco u n t on the
distribution of u ran iu m deposits in India. 10

S e c tio n —F

A ttem pt an y one question

10. (ai Hovr vtrill you diH'erentiate fall, flow an d slide in the field? Explain various
techniques u sed for stabilization of jointed rock m ass slope. 15

(b) Explain th e various risks associated with sp e n t fuel disposal site selection.
Describe rock engineering param eters which need to be addressed for
long-term safety an d stability.

11. (a) Define drillabiliQr of rock. How is rock driUability index u sed for estim ation of
drill bit life? 10

(b) Explain the im portance of engineering geological risk m anagem ent in
tunneling. How to minimize the risk in seismically active zones?
10

(c) W hat are th e different scientific approaches to select a suitable aggregate for
construction work?
10

* * *

4 7BS—6110