2019 · Q98
Which one of the following is NOT a palaeoclimatic geological indicator?
indian-world-geographygeomorphology
- ALacustrine deposits
- BIce sheets and ice cores
- CEvaporite deposits
- DSedimentary deposits
Explanation
Palaeoclimatic geological indicators are features of the rock and sediment record: lacustrine varves, evaporite deposits (marking aridity) and sedimentary deposits such as tillites and coal all qualify. Ice sheets and ice cores, though superb climate archives, are cryospheric (frozen water) rather than geological indicators - so B is the NOT-a-geological-indicator answer per UPSC's official key. The stored key C has been corrected.