Sedimentary Rocks Formation
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Questions and Answers

What is the main mode of transportation for sediments that contribute to the formation of sedimentary rocks?

  • Transportation by glacial ice movement
  • Transportation by volcanic eruptions
  • Transportation by atmospheric precipitation
  • Transportation by river water, wind, or glacial ice movement (correct)
  • What are sedimentary rocks?

  • Rocks formed from the compression of organic materials over millions of years
  • Rocks formed from the metamorphism of existing rocks
  • Rocks formed from loose fragments or detrital sediments deposited by weathering of older rocks (correct)
  • Rocks formed from the cooling and solidification of magma or lava
  • What is the significance of sedimentary rocks in knowing past environments?

  • They help in identifying the source area of sediments
  • They provide information about the present climate conditions
  • They are important for knowing about volcanic activities in the past
  • They help in knowing depositional environments and provenance of sediments (correct)
  • What percentage of the earth's land surface is covered by a thin veneer of sediments or sedimentary rocks?

    <p>75%</p> Signup and view all the answers

    Which type of sedimentary rock is formed due to evaporation of saline water?

    <p>Evaporitic rocks</p> Signup and view all the answers

    Sedimentary rocks are the primary rocks formed directly from magma.

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

    Sedimentary rocks are formed from loose fragments or detrital sediments.

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

    Almost 90% of the earth's crust is made up of sedimentary rocks.

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

    Transportation of sediments can occur by river water, wind, or movement of glacial ice.

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

    Evaporitic rocks are formed due to the evaporation of saline water, such as sea water.

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

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