Which one of the following is NOT a palaeoclimatic geological indicator ?
Lacustrine deposits
Ice sheets and ice cores
Evaporite deposits
Sedimentary deposits
Answer is Wrong!
Answer is Right!
This question was previously asked in
UPSC CAPF – 2019
– Lacustrine deposits (lake sediments) often preserve pollen, microfossils, and sediment layers that reflect changes in precipitation, temperature, and vegetation.
– Ice sheets and ice cores contain trapped gases, isotopes, and impurities that provide high-resolution records of past atmospheric composition and temperature.
– Evaporite deposits (e.g., salt, gypsum) form in environments with high evaporation rates, indicating arid or semi-arid conditions.
– Sedimentary deposits encompass a vast range of rocks and unconsolidated sediments formed by deposition. While climate influences many sedimentary processes and products, some sedimentary deposits are formed primarily by tectonic or erosional processes without a strong, direct, or easily interpretable climate signal. The term is too broad to be a specific indicator type in the same way as the others listed.