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Old Tuesday, March 08, 2016
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Default Geology Paper 2016

FEDERAL PUBLIC SERVICE COMMISSION
COMPETITIVE EXAMINATION -2016
FOR RECRUITMENT TO POSTS IN BS-17
UNDER THE FEDERAL GOVERNMENT

GEOLOGY

Time Allowed: Three Hours
Part-I (MCQs): Maximum 30 Minutes
Part-I (MCQs): Maximum Marks = 20
Part-II: Maximum Marks = 80


PART II

SECTION I

Q 2. Weathering is a natural process to break down the rocks and the minerals. This process involves a set of physical, chemical and biological processes. Explain different types of physical and chemical weathering, and describe the role of water in chemical weathering process. (20)

Q.3 Global society is heavily dependent on minerals and metals. Earth is the source of all these resources. All minerals are grouped into silicate and non silicate minerals, and further are divided into seven major classes according to their economic use. For example, class Sulfides has mineral Galena whose chemical formula is PbF, and is a source of LEAD. Make a Table of four columns; 1st column should carry the title 'Minerals Class', 2nd column 'the Names of Minerals of the classes', 3rd column is Chemical formulae of minerals of 2nd column, 4th column the economic use of minerals of column-2.
Mention 10 minerals in the Table, giving their class (1st column), mineral name (2nd column, chemical composition (3rd column), and economic use (4th column) (20)

Q.4 Mountain Belts are made of several mountain ranges, usually with related histories. There are some familiar mountain ranges of the world, mention simply their names and localities. However, discuss in detail the tectonic frame work of Himalayas. (20)

Q.5 Earth scientists are aware of the fact and metamorphism and plate tectonics are intimately linked and are responsible for the development of different metamorphic facies. Explain with diagrams(s) the type of plate tectonic boundary and formation of the related facies. (20)

SECTION II

Q.6 Pakistan has plenty mineral resources. Massive sulfide bodies are also found in different places. Electromagnetic geophysical methods is considered most suitable for the exploration of such high electrical conductivity bodies buried under surface. Discuss in detail the electromagnetic method, the controlling factors for increasing depth penetration and its other applications. (20)

Q.7 Earthquakes are produced by fracturing the rocks in the subsurface. How it happens? How tsunamis are produced? What characteristics make the earthquake dangerous, and what characteristics make tsunami dangerous? Make a plot of the seismic waves which are recorded during earthquake. (20)

Q.8 Write short notes on any TWO of the following. (10 each) (20)
(a) Role of Bouguer anomaly map in oil exploration
(b) Suitable geophysical technique used for groundwater exploration
(c) Unconformaties in Salt Range Startigraphy
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