IFS (Forests Services) Geology (Mains): Questions 25 - 32 of 35

Access detailed explanations (illustrated with images and videos) to 35 questions. Access all new questions we will add tracking exam-pattern and syllabus changes. Unlimited Access for Unlimited Time! View Sample Explanation or View Features.

Rs. 200.00 or

How to register?

Question number: 25

» Geochemistry and Environmental Geology » Pollution of Ground and Surface Water

Edit

Appeared in Year: 2017

Essay Question▾

Describe in Detail

How does the urbanization affect groundwater recharge? How can the recharge be increased? (Mains Paper -2)

Explanation

  • Introduction

    Most of the Earth’s liquid freshwater is found as stored underground in and not in the lakes and rivers. Groundwater plays an important role in terms of the economic and social health of the of the developing world. Cities need to supply water in various combinations as per demands of their private, public, industrial, and commercial us

… (505 more words) …

Question number: 26

» Structural Geology » Principles of Geologic Mapping and Map Reading

Edit

Appeared in Year: 2017

Essay Question▾

Describe in Detail

With the help of case study, describe the methodology for using satellite imagery and GIS to identify potential zones of groundwater. (Paper-1)

Explanation

  • Introduction

    • Groundwater is the source for irrigation and domestic purpose. For domestic purpose – rural areas use and urban areas use . The rate of groundwater flow is controlled by two properties of the rock: porosity and permeability.

    • Remote sensing data combined with Geographical Information System (GIS) technique is very efficient in iden

… (801 more words) …

Question number: 27

» Paleontology » Application of Microfossils in Correlation

Edit

Appeared in Year: 2017

Essay Question▾

Describe in Detail

Write explanatory notes within 150 words each, on the following

Mineral- walled microfossils and their applications in stratigraphic correlation

Explanation

  • Introduction

    • The study of mineral walled microfossils is called as micropalaeontology.

    • Microfossils the remains of once living bacteria, Protista, plants and animals and ins some cases fragments of larger organisms (Example: Conodonts)

    • These fossils are so small that we need a microscope to study them.

    • Based on their composition, microfossils represe

… (407 more words) …

Question number: 28

» Structural Geology » Joints and Faults

Edit

Appeared in Year: 2017

Essay Question▾

Describe in Detail

Describe unconformities and their types, and give the various criteria to distinguish them from faults.

Explanation

    • Introduction

      When the sedimentary rock beds deposit without any interruptions they are called as conformable. If there are any interruptions in sedimentation then they are called as unconformities.

    • Unconformity

      • Major breaks in sedimentation are called as unconformities. An unconformity is an old erosion surface, which separates younger series of rock

… (418 more words) …

Question number: 29

» Paleontology » Trilobita

Edit

Appeared in Year: 2017

Essay Question▾

Describe in Detail

Tabulate the Palaeozoic stratigraphic successions and their equivalents in Spiti, Kashmir and Kumaon basins of the Himalayas. (Mains Paper -1)

Explanation

  • The Palaeozoic era has been classified into six periods

    • Cambrian

    • Ordovician

    • Silurian

    • Devonian

    • Carboniferous

    • Permian

  • The Palaeozoic rocks of marine origin are found only in the Spiti and Kashmir areas of western Himalayas an in salt range.

Palaeozoic succession of Spiti

Table of Palaeozoic succession of Spiti

Table of Palaeozoic succession of Spiti

Periods

Groups

Formations

… (391 more words) …

Question number: 30

» Structural Geology » Stress Andstrain Ellipsoid and Stress-Strain Relationships of Elastic

Edit

Appeared in Year: 2017

Essay Question▾

Describe in Detail

How are stress and strain related to each other? Explain the stress – strain curves in terms of brittle, ductile and viscous materials. (Paper-1)

Explanation

  • Stresses applied to a rock mass can be resolved into three mutually perpendicular directions. These directions are called as “axes of stress” and their magnitude is expresses as greatest, intermediate and least. When the magnitude of stress for each axis is equal, the stresses are said to be hydrostatic. Under such stresses, the volume of rock chan

… (355 more words) …

Question number: 31

» Structural Geology » Time - Relationship between Crystallization and Deformation

Edit

Appeared in Year: 2017

Essay Question▾

Describe in Detail

Write Note on: Petrofabric analysis (Mains)

Explanation

  • Introduction

    • Petrofabric is the study of deformation features in the rocks, usually at the grain stage. The studied features are distribution, morphology and Orientation caused by fractures, twinning, pressure solution and recrystallization fabrics.

    • Petro fabrics provide information on,

    • Mechanism of deformation

    • Orientation and magnitude of principal st

… (250 more words) …

Question number: 32

» Sedimentology Sedimentary Rocks » Processes of Formation

Edit

Appeared in Year: 2017

Essay Question▾

Describe in Detail

How depositional environment is determined from sedimentary rocks. (Paper-II)

Using sedimentary rocks to determine the depositional environment.

Explanation

Introduction

  • During weathering and erosion, the pre-existing rocks and the minerals are broken down. This process of accumulation of sediments at a site of deposition is called the sedimentation.

  • Sediments accumulate in a wide variety of environments, both on the continents and in the oceans.

  • The depositional environments are caused due to physical, c

… (349 more words) …

Developed by: