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Doctors Medicines MCQs Q&A

  1. Lacustrine deposits
  2. Ice sheets and ice cores
  3. Evaporite deposits
  4. Sedimentary deposits
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1 Answers

Option 1 : Lacustrine deposits

The correct answer is option 1) Lacustrine deposits.

  • The word 'Palaeoclimatic' means the climate of pre-historic period. 
  • In Lacustrine deposites, we study the sedimentary deposits which are accumulated in the bottom of ancient lakes in a large span of time and they transform into sedimentary rocks.
  • As sedimentary deposits is already given in the options, hence option 1 Lacustrine deposits will be considered incorrect and it is not a palaeoclimatic geological indicator.
  • Ice cores and ice sheets holds a record of what our planet was like hundreds of thousands of years ago. Hence is a palaeoclimatic geological indicator.
    • Greenland and Antarctica are the examples of this.
  • Evaporite deposits - These are excellent indicators of palaeoclimate. Their age ranges from Precambrian to Recent. Hence it is a palaeoclimatic geological indicator.
    • these deposites are found in Northern parts of india such as :
      • Jammu and Kashmir - Leh, Kargil, Baramula.
      • Uttarakhand - Dehradun, Garhwal and Tehri Garwal.
      • Himanchal Pradesh - Lahul and Spiti.
  • Sedimentary Deposits - These are basically the sedimentary rocks that are formed in the river beds, bottom of lakes, floor of ocean and other water bodies.
    • sand, silt, shale, dolomites and limestones. 
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