M.Sc Applied Geology (Semester III) (CGPA) Examination, 2017
MINERAL EXPLORATION
Day Date: Thursday, 20-04-2017 Max. Marks: 70
Time: 02.30 PM to 05.00 PM
Instruction: Answer any five questions.
All question carry equal marks.
Question No. 1 compulsory.
Answer any 2 question from questions 4.
Answer any 2 question from questions 7.
Q.1 Fill in the blanks 14
The conductivity of rock formations can be measured by means of

Electrical logging Sonic logging
Induction logging Radiation logging.
The self potential and induced Potential to locate ore
bodies is done by
Seismic Method Magnetic Method
Radiometric Method Electromagnetic Method
The Average gravitational force of Earth is
98cm/S2 980 cm/S2 9800 cm/S2 980 cm/ S
The Value of Universal Gravity constant in S.I. Unit is
6.67 10-8 6.67 10-9 6.67 10-8 6.67 10-12
The difference between the observed and predicted gravity values
after applying all the corrections is described as
Free- air anomaly Free- air correction
Bouger anamoly Bouger correction
The Gravity prospecting methods are useful in the exploration of oil
and gas to determine
The thickness of sedimentary column The nature of trap rock
The potential of oilfield None of the above.
The total magnetic field is weakest at
00 Latitude 300N-300 S Latitude
900 Latitude 600 N-600S Latitude
The unit used to express the magnetic field strength in M.K.S. Unit
system is called
Page 2 of 2
Oersted Tesla Weber Maxwell
Trenching involves
Linear excavations
Linear excavations in which one dimension is longer than the
other
Drilling wedge shaped bore holes
Digging even sized pits.
10) Diamond drilling can be used to bore holes into
Horizontal direction only Vertical directions only
Horizontal and vertical directions In all the directions.
11) The most useful type of drilling for penetrating hard or abrasive
ground is
Diamond drilling Rotary Drilling
Percussion Drilling Churn Drilling
12) Sampling is defined as fraction of the bulk.
Recoverable Representative Resource Reserve
13) Which of the following is a pathfinder for Au deposits?
As Se V Mo
14) Geochemical sol anomalies are mostly due to
Hydrothermal accumulations Heavy mineral accumulation
Residual accumulation Selective concentration
Q.2 Define geochemical dispersion of the elements. Explain the strategy for
exploration of kimberlite pipes.
14
Q.3 Write various geological criteria of prospecting ore deposits, cite suitable
Indian example.
14
Q.4 State the principles of gravity method for prospecting the ore deposits. Add a
note on various corrections related to gravity date.
14
Q.5 Write short notes on: 14
Mineral Provinces
Magnetometers
Q.6 Discuss in brief:
Reduction of Magnetic Anomaly
Mineral Provinces
Q.7 Write shorts note on:
Choice of sequence of prospecting.
Well Logging