Geology Chapter 2: Geological Evolution and Structure
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Questions and Answers

What is the primary focus of historical geology?

  • Study of the earth's crust
  • Formation of rocks during eras
  • Patterns of development of the earth's crust in time and space (correct)
  • Study of the earth's atmosphere

    • What is the name given to rocks formed during an era?

  • Period
  • Era
  • System
  • Group (correct)

    • How old is the Pre-Cambrian era?

  • Between 400-570 million years old
  • Over 570 million years old (correct)
  • Between 245-570 million years old
  • Over 400 million years old

    • What is the name of the Indian geological era that is 400-570 million years old?

    <p>Dravidian</p> Signup and view all the answers

    Why are the Pre-Cambrian rocks named so?

    <p>Because they are named after Cambria, the Latin name for Wales</p> Signup and view all the answers

    What type of fossils are found in the Cenozoic era?

    <p>Recent life forms</p> Signup and view all the answers

    What is the process of plain formation that is still continuing?

    <p>Deposition of sediment by rivers</p> Signup and view all the answers

    What is the study of folds and faults including igneous activities associated with their formation?

    <p>Geological structure</p> Signup and view all the answers

    What is the characteristic of the Himalayan Mountains?

    <p>A young mountain of soft rocks</p> Signup and view all the answers

    What is the study of the formation and development of surface features of land?

    <p>Physiography</p> Signup and view all the answers

    What is the characteristic of the Peninsular Plateau?

    <p>An old landmass of hard rocks</p> Signup and view all the answers

    What is the lithological study of rock beds, sequence of their occurrences and their thickness and age?

    <p>Stratigraphy</p> Signup and view all the answers

    What is the geological term for the process of mountain building?

    <p>Orogenic</p> Signup and view all the answers

    What is the name of the plate that the Peninsular Plateau is a part of?

    <p>Indo-Australian Plate</p> Signup and view all the answers

    What is the name of the sea that existed in the Himalayan area till the Mesozoic era?

    <p>Tethys Sea</p> Signup and view all the answers

    What is the characteristic of the river valleys in the Peninsular Plateau?

    <p>Shallow with low gradients</p> Signup and view all the answers

    What is the name of the plateau that is surrounded by sea on three sides?

    <p>Peninsular Plateau</p> Signup and view all the answers

    What is the shape of the Himalayan mountain system?

    <p>Arc-shaped</p> Signup and view all the answers

    What is the term used to describe the geological structure of the Peninsular Plateau?

    <p>Horst</p> Signup and view all the answers

    Which of the following rock systems contains the first formed rocks of the earth?

    <p>Archean System</p> Signup and view all the answers

    What is the characteristic of the rivers in the Himalayas?

    <p>Torrential</p> Signup and view all the answers

    What is the main type of rocks found in the Peninsular Plateau?

    <p>Igneous</p> Signup and view all the answers

    Which of the following groups corresponds to the first half of the Pre-Cambrian era?

    <p>Archean</p> Signup and view all the answers

    What is the shape of the Peninsular Plateau?

    <p>Triangular</p> Signup and view all the answers

    What type of rocks are formed due to intensive volcanic activity in Maharashtra and other parts of the Deccan?

    <p>Deccan Traps</p> Signup and view all the answers

    During which period did the peninsula experience crustal movements leading to the formation of basin shaped depressions?

    <p>Upper Carboniferous Period</p> Signup and view all the answers

    Where are the Dravidian rocks found in continuous sequence?

    <p>In the Himalayas</p> Signup and view all the answers

    What type of rocks contain coal deposits and show marks of climatic changes?

    <p>Gondwana Rocks</p> Signup and view all the answers

    Where are the Gondwana Rocks mainly found?

    <p>In the Damodar, Mahanadi and Godavari valleys</p> Signup and view all the answers

    What type of rocks are found in the northern part of the central Himalayan axis?

    <p>Palaeozoic Rocks</p> Signup and view all the answers

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