In a sequence of undeformed sedimentary rocks, younger rocks overlie older rocks. This conforms to the principle of
- superposition
- uniformitarianism
- faunal succession
- original horizontality
The Correct Option is A
Solution and Explanation
The principle of superposition states that in an undeformed sequence of sedimentary rocks, younger rocks are deposited on top of older rocks. This principle helps geologists determine the relative ages of rock layers
Top Questions on Stratigraphy
A well-developed succession of laminated shale is bound by two volcanic ash beds that were precisely dated as shown in the schematic diagram given below. Assuming a constant sedimentation rate, the age of the fossiliferous limestone bed 65 m above the basal volcanic ash bed is ............ Ma. (Round off to nearest integer)
- IIT JAM GG - 2025
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Two boreholes A and B, both inclined towards 270°, penetrate a dipping coal bed at the same point and pass through it entirely in the sub-surface as shown in the figure below. The bed dips towards 270°. The thickness of the coal bed, measured along the borehole A is 10 m and along borehole B is 8 m. The angle between the two boreholes is 20°. The orthogonal thickness \( x \) of the coal bed is ........ m. (Round off to one decimal place)
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- IIT JAM GG - 2025
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- IIT JAM GG - 2025
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