M.Sc. (Semester III) (CBCS) Examination Nov/Dec-2018
Applied Geology
MINERAL EXPLORATION
Time: 2½ Hours Max. Marks: 70
Instructions: All questions are compulsory.
Figures to the right indicate full marks.
Draw neat and labeled diagrams wherever necessary.
Q.1 Rewrite the sentences by choosing correct answer from given alternatives: 14
Productive plutons for gold deposit in India are
Kimberlite Greenstones
Green schist Granite
The pathfinder element "No" is useful in locating
Au deposits Tin deposits
Porphyry Cu deposit None
"Galmi flora" is a good universal indicator for
Base metals Tungsten
Mica All of the above
What would be the value of E in the equation E P√ during exploration if
suitable method of exploration is not employed.
One Two
Three Zero
The best productive rock in exploration of cassiterite deposit is
Anorthosite Ultramafics
∝ Granite None
Hydromorphic anomalies are noticed for the element that are soluble in water
and the best example is for
Base metal Gold
Cassiterite None
During a reconnaissance survey we determine
Sample density
Element to be analyzed
Draw attention to local areas of interest
All of the above
Drilling is employed for
Determining the stratigraphy or rock sequence
Locating and evaluating substances of economic value
Obtaining data for correlating
All of the above
Natural gamma ray log exhibits a high response from
Shale Lime stone
Dolomite Sandstone
10) Self potential and induced potential survey to locate ore bodies of
Electromagnetic method Seismic method
Magnetic method Radiometric method
Page 2 of 2
SLR-VB-34
11) The average gravitational force of the earth is
98 cm/sec2 980 cm/sec2
9800 cm/sec2 980 cm/sec
12) The unit to express magnetic field strength is
Oaster Tesla
Weber Maxwell
13) The P-wave velocities are highest in
Air Water
Sand Granite
14) The position of electrode is changed with respect to a fixed central point in
Magnetic survey Resistivity survey
Radioactive surveys None of the above
Q.2 Answer the following any four:-
1. Snell's law equation
2. Define acceleration of Gravity
3. Economic financial returns in exploration
4. Primary geochemical dispersion pattern
5. Scale of prospecting
08
Write notes on (Any
1. Schlumberger equation
2. Geological criteria for Indian Gold deposits
3. Calibration of Gravimeter
06
Q.3 Answer the following Any
1. Magnetic field and relationship between magnetic elements
2. Geochemical signature of porphyry copper deposits
3. Define background, Threshold and Anomalies
08
Answer the following any one
1. Difference between Schlumberger and Wenner array
2. Types of secondary geochemical dispersion surveys
06
Q.4 Answer the following Any
1. Use of 14C dating
2. Seismic reflection surveys and its applications
3. Types of sampling
10
Answer the following any one
1. Equation of Bouguer correction
2. Geobotanical surveys
04
Q.5 Answer the following (any two) 14
Choice and sequence of exploration
Gravity surveys
Explain correction in magnetic surveys