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Combined Geo-Scientist (Main)
Examination, 2024
GEOLOGY
Paper - I
Time Allowed : Three Hours Maximum Marks : 200
Question Paper Specific Instructions
Please read each of the following instructions carefully before attempting
questions :
There are ELEVEN questions divided in SIX sections.
Candidate has to attempt SIX questions in all.
The ONLY question in Section A is compulsory.
Out of the remaining TEN questions, the candidate has to attempt FIVE, choosing ONE
from each of the other Sections B, C, D, E and F.
The number of marks carried by a question/part is indicated against it.
Unless otherwise mentioned, symbols, abbreviations and notations have their usual
standard meanings.
Neat sketches are to be drawn to illustrate answers, wherever required. They shall be
drawn in the space provided for answering the question itself:
Wherever required, graphs/tables are to be drawn on the Question-cum-Answer (QCA)
Booklet itself:
Attempts of questions shall be counted in sequential 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 Question-cum-Answer (QCA) Booklet must
be clearly struck off.
Answers must be written in ENGLISH only.
SGSE-P-GLG 1
SECTION A
(Compulsory Section)
Ql. Describe the following in brief with illustrations, wherever necessary :
(a) Pratt’s theory of Isostasy
(b) Infrared Remote Sensing
(6) Saline Series of Salt Range
(d) Duplexes
(ಅ) Limitations of Lithostratigraphic Correlation
(f) = Shear Sense Indicators
(g) |Hummocky Cross-stratification
(1) Unaltered preservation of fossils
nc Species concept in Paleontology
0) Stromatolites and their geological significance
SGSE-P-GLG 2
SECTION B
Attempt any one question.
Q2. (a)
(b)
Q3. (৪)
(b)
(০)
Describe the role of groundwater in Limestone topography. Also, discuss
the various erosional landforms developed due to the action of
groundwater, with a suitable diagram.
Discuss the Digital Image Processing and comment on the image
enhancement techniques.
With a neat diagram, describe the various compositional and mechanical
layerings of the Earth. Also, discuss the role of seismic waves in
inferring the interior of the Earth.
Describe the various types of voleanoes. Also discuss the causes of
volcanism, with a diagram and comment on the global distribution
pattern of volcanoes.
Discuss the spectral reflectance curve of the Earth’s surface covered by
soil, water bodies, rocks and vegetation, with suitable sketches.
SGSE-P-GLG 3
15
15
10
10
10
SECTION C
Attempt any one question.
@4. (a) What is dip isogon pattern ? How are they helpful in classification of
folds ?
(9) Discuss different types of linear structures and discuss their tectonic
significance.
Q5. (a) Discuss the mechanism and significance of Mylonites and Cataclastic
deformation. .
(2) What is rock cleavage ? Give the significance of cleavage in deciphering
the structure of a folded area.
(c) With the help of a block diagram for normal fault, thrust and strike-slip
fault, show the orientation of ૦], وہ and وہ for generation of these faults.
SGSE-P-GLG 4
15
15
10
10
10
SECTION D
Attempt any one question.
Q6. (৪)
(b)
07. (৪)
(00)
हि
(০)
What is a facies model ? Describe the sedimentation pattern and facies
in a tidal flat environment.
How is depositional fabric in rudites useful in determining the
depositional environment ?
Describe the controlling factors of sandstone composition.
Discuss the diagenesis and diagenetic reactions that occur in carbonate
sediments.”
Giving the genesis, describe any four sedimentary structures which are
useful in paleocurrent analysis.
SGSE-P-GLG 5
15
“15
10
10
10
SECTION E
Attempt any one question.
९8. (a)
(b)
Q9. (৪)
(b)
(८)
Describe the shell morphology of trilobites with neat and labelled
sketches. Add a note on their biostratigraphic significance during
Paleozoic.
Comment on the ichnofacies concept and their role in the interpretation
of shallow marine environments. Discuss the advantages and limitations
of ichnofossils.
Describe the various stages in hominids evolution with suitable
examples and sketches.
Comment on the Gondwana plant fossils and their paleoclimatic and
paleogeographic implications.
Discuss the hypotheses for the cause of Permian-Triassic mass
extinction.
SGSE-P-GLG 6
25
15
10 €
10
10
SECTION F
Attempt any one question.
૨10. (a)
(b)
౧11. (a)
(b)
(c)
SGSE-P-GLG
Describe the tectonic evolution of Cuddapah Supergroup. Also discuss
the lithostratigraphic classification and associated depositional
environment.
Discuss the distribution of marine Paleozoic formation of India. Describe
the stratigraphic succession of Kashmir Paleozoic formations and also
mention the characteristic fossils from different Paleozoic successions.
Discuss the nature and tectonic evolution of Central Indian Tectonic
Zone (CITZ).
Describe the depositional environment of Paleogene succession of the
Himalayas.
Discuss the tectonic evolution of Kutch Basin. Explain the Mesozoic
stratigraphy of Kutch Basin and their depositional environment.
15
15
10
10
10
