M.Sc. (Semester III) (CBCS) Examination Mar/Apr-2018
Applied Geology
MINERAL EXPLORATION
Time: 2½ Hours
Max. Marks: 70
Instructions: All questions carry equal marks. Question 1 is compulsory. Answer any two essay questions from Q.2, 3 4. Answer any two short notes questions from Q.5, 6 7. Draw neat and labeled diagrams wherever necessary.
Q.1
Mark the correct objective:-
14
Find the odd one
Free air correction
Bouguer correction
Topographic correction
Diurnal correction
The daily of cycle of magnetic change of the earth field is termed as
Bouguer changes
Secular change
Diurnal change
None
The productive plutons for diamond deposit are
Granite
Kimberlite

Greenstone
None
The map showing changes of magnetic intensity per annum is termed as
Isoporic map
Geodic map
Isomagnetics map
None
The chemical action between minerals and solution with which they are in contact is made use in
Seismo-chemical survey
Self-potential method
Magneto telluric method
Radioactive method
The galmi flora are geobotanical indicators for
Radioactive methods
Gallium deposit
Sulphide deposits
None
The rock which develops during the contact metamorphism
Buchite
Skarn rock
Kimberlite
Charnockite
Which of the following methods are used for identification of carnotite
Radioactive
Seismic
Magnetic
All the above
It is better to identify a mineral by using its
colour
density
O
streak
shade
10) Seismic reflection method identifies the structures localizing
Gold
Porphyry copper
Hydrocarbons
None
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11) The conductivity or rock formations can be measured by mean of
Electric logging
Induction logging
Sonic logging
Radiation logging
12) Litho-geochemical survey are carried out to identify the
Primary dispersion
Secondary dispersion
Wall rock alteration
None of the above
13) A mineral that is composed of only one element is known as a
Single mineral
Single element
Native mineral
Native element
14) The rays that are measure by a standard radioactive prospecting instrument the Geiger counter detects
rays
Gamma rays
Gamma rays
None
Q.2
Discuss the gravity method for mineral exploration and their different method of correction with label diagrams?
14
Q.3
Principles of subsurface geophysical method of well logging and their different types?
14
Q.4
Describe in detail geobotanical survey and their merits and demerits?
14
Q.5
Discuss the following question in short:-
14
Principle and concept of radiometric prospecting.
Resistivity method for structural and lithological interpretation.
Q.6
Write short notes
14
Geochemical dispersion
Methods and type of sampling
Q.7
Write short notes
14
Explain the method of exploration of hydrocarbon.
Geochemical and geophysical anomalies