IFS (Forests Services) Geology (Mains): Questions 16 - 23 of 31

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Question number: 16

» General Geology » The Solar System

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Appeared in Year: 2017

Essay Question▾

Describe in Detail

Protoplanetary hypothesis and its relationship to the solar nebula. To discuss a hypothesis regarding the origin of the earth.

Explanation

  • Introduction

    • There are few theories for the origin of the solar system. These are classified as Evolutionary theories and catastrophic theories

    • Evolutionary theories suggest Formation of planets during the evolution of sun. Nebular hypothesis is an example of evolutionary theory.

    • Catastrophic theories Planets are form

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Question number: 17

» Hydrogeology and Engineering Geology » Hydraulic Conductivity

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Appeared in Year: 2017

Essay Question▾

Describe in Detail

Elaborate the procedure for ‘Aquifer performance test’ and estimation of hydraulic properties of aquifers. (Mains Paper-1)

Explanation

  • Introduction

    • Permeable rock formations, which store under groundwater and transmit sufficient quantity of it to a pumping well, are called aquifers.

    • The performance characteristics of well and hydraulic head of an aquifer can be determined by the pumping test. Pumping test is used to determine the aquifer hydraulic characteristics. This d

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Question number: 18

» Geomorphology and Remote Sensing » Basic Concepts of Geomorphology

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Appeared in Year: 2017

Essay Question▾

Describe in Detail

To discuss Geomorphic features in East coast –Coromandel Coast

Explanation

Introduction

  • In Eastern coast of India – crystalline rocks of late quaternary deposits are available,

  • They are grouped as

    • Marine calcareous

    • Coralline or crystalline

  • The reef at Periyathalai is a geological formation of calcareous rock ◊ It is also prevalent between Kanyakumari and Rameswaram.

Image of Vegetated wet lands

Image of Vegetated Wet Lands

Image of Vegetated wet lands

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Question number: 19

» Structural Geology » Principles of Geologic Mapping and Map Reading

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Appeared in Year: 2017

Essay Question▾

Describe in Detail

Enumerate the tools and equipment required to undertake geological mapping. Explain the importance of geological mapping. (Paper-1)

Explanation

  • Introduction

    • Tools and equipments used for geological mapping

    • Maps:

    • The maps like physical, political, relief, road, physical, and topographic are carried to cover maximum details. It is used as a reference tool in geological mapping.

  • Aerial photographs and stereoscope:

    Aerial photograph is a 3D imagery tool to check volcanoes, ca

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Question number: 20

» Stratigraphy and Geology of India » Classification of Stratigraphic Sequences » Distribution and Classification of Precambrian Rocks of India

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Appeared in Year: 2017

Essay Question▾

Describe in Detail

Discuss the stratigraphy and distribution of marine depositional episodes in the Gondwana sequence of India. (Mains – Paper 1)

Explanation

Gondwana basins of India occur within the suture zones of Precambrian cratonic blocks of Peninsular India along some linear belts. More than 99 % of coal resource is present within the basins.

  • These basins preserve a thick sedimentary pile deposited over nearly 200 million years from latest carboniferous to lower cretaceous.

  • Unique events

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Question number: 21

» Hydrogeology and Engineering Geology » Hydrologic Cycle and Genetic Classification of Water

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Appeared in Year: 2017

Essay Question▾

Describe in Detail

Describe the geological considerations for designing and constructing earthquake resistant structures. (Paper-1)

Explanation

  • Techniques

    • Shear walls they resist gravity leads and lateral loads

    • Bracing

    • Dampers

    • Rollers

  • Active system

    The system provides seismic protection by imposing forces on a structure that counter balance the earthquake induced forces.

  • Passive system

    These systems are passive in nature. These systems are activated only by

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Question number: 22

» Geomorphology and Remote Sensing » Applications of Geomorphology in Mineral Prospecting

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Appeared in Year: 2017

Essay Question▾

Describe in Detail

Using case studies explain the application of geomorphology in mineral prospecting

Explanation

  • Introduction

    • Application of Geomorphology

    • Geomorphic features may be helpful in locating mineral deposits in various ways. Mineral deposits are associated with geological structure. Landscape characteristics of the specific localities could indicate such geological structures.

    • The application of geomorphology in mineral prospecting

    • S

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Question number: 23

» Geomorphology and Remote Sensing » Applications of Geomorphology in Mineral Prospecting

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Appeared in Year: 2017

Essay Question▾

Describe in Detail

Discuss the evidences of seafloor spreading and explain with illustrative diagrams, how earthquakes and subduction processes are related to each other. (Paper -1)

Explanation

  • Introduction

    • The Hypothesis of sea floor spreading was first postulated by Harry Hess in 1960.

    • According to the hypothesis,

    • The mid ocean ridges occur in all major ocean basins

    • The oceanic crust has a thickness of 6 to 7 km

    • Mid oceanic ridges are situated over the rising limbs of convection currents in the earth’s mantle and tha

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