M.Sc. (Applied Geology)(Semester (CBCS) Examination, 2017
SEDIMENTOLOGY AND PALAEONTOLOGY
Day Date: Saturday, 22-04-2017 Max. Marks: 70
Time:10:30 AM to 01.00 PM
N.B. Answer any Five Questions
All Questions carry equal marks
Question No. 1 is Compulsory
Answer any two question from each section A and
Section B.
Draw neat and labeled diagram wherever necessary.
Q.1 Multiple choice question: 14
Rain prints can occur in:
Ligneous rocks only Sedimentary rocks only
Metamorphic rocks only All the above
Out of these which subclass of Cephalopods yield species:
Nautiloidea Ammonoidea
Coleoidea Both and are correct
Variation of palaeocurrent direction is minimum in the deposits
formed by:
Glacial processes Fluvial processes
Aeolian processes Beach processes
Which type of coiling is rate in Gastropods?
Dextral Sinistral
Both the type of coiling Armestral
For dipping sedimentary rocks, the stratigraphic thickness id
obtained by:
Width x tangent of dip
Width x dip
Measuring distance between lower bedding plane and the upper
bedding plane normal to the bedding plane
None of these.
Which of these are not a Mesozoic Lamellibranch?
Trigonia Gryphaea Exogyra Cardita
Roundness of particle is determined by using the formula:
=r/R.N
Page 1 of 2
Out of the following plant fossils, which one is ranging in age from
Jurassic to Cretaceous?
Ptillophyllum Nilssonia
Otozamites All of the above
Grain size distribution of particles can be graphically represented
by:
Histogram Cumulative curve
Scatter diagram All the above
10)"Fusilinids" are the characteristic fossil of:
Devonian
Carboniferous
Upper Devonian to Lower Carbonifereous
Upper Carbonifereous to Lower Permian
11)Heavy minerals are those minerals whose density is above:
2.2 2.6 2.9 3.5
12)The well-known Coral Island in the Arabian Sea is:
Great barrier reef Lakshadweep
Andaman Nicobar Both and are correct
13)The liquid, used to separate heavy minerals from light minerals is:
Chloroform Bromoform
Kerocene Ethelene
14)In Intertappean beds Physa is reported from:
Panjal trap Deccan trap
Rajmahal trap Both and are correct
Section A
Q.2 Write on the significance of the microfossils in oil exploration.
Q.3 Give a detailed account on grain size analysis. Add note on usefulness
of grain size data in the study of Reservoir Rocks.
Q.4 What are the Primary sedimentary structures? Enumerate your answer
with special reference to Ripples and Cross-Bedding.
Section B
Q.5 Write in brief on the following:
Physical weathering
Devonian fish
Q.6 Discuss in short:
Diagenetic Processes (Cementation)
Important characters and stratigraphic range of Regular Echinoids
Q.7 Explain the following:
Classification of sandstone
Petrified wood