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The Indian desert also known as Marusthali is believed to be under the

June 1, 2025 by rawan239

The Indian desert also known as Marusthali is believed to be under the sea during which one of the following eras ?

Cenozoic era

Palaeozoic era

Mesozoic era

Archaean and Pre-Cambrian era

This question was previously asked in

UPSC CDS-2 – 2022

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The correct answer is C) Mesozoic era.

Geological evidence, including the presence of marine fossils (like ammonites) found in areas like Jaisalmer within the Thar Desert, suggests that parts of the region were submerged under a shallow sea during the Mesozoic era, particularly during the Jurassic and Cretaceous periods. This indicates that the area was part of the Tethys Sea or its remnants before tectonic uplift and regression of the sea formed the landmass.

The Cenozoic era followed the Mesozoic and is the “Age of Mammals,” characterized by the formation of the Himalayas and the development of the modern Indian landscape. The Palaeozoic era preceded the Mesozoic and saw the formation of ancient mountain ranges and significant life evolution. The Archaean and Pre-Cambrian eras represent the Earth’s earliest history, long before the formation of such features. The marine transgression evidence in the Thar Desert points specifically to the Mesozoic.

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