Question:
Which one of the following lithostratigraphic units is of Phanerozoic Eon?
Which one of the following lithostratigraphic units is of Phanerozoic Eon?
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The Phanerozoic Eon, known for abundant fossil records, includes important stratigraphic units such as the Semri Group from the Gondwana sequence.
Updated On: Nov 18, 2025
- Sargur Group
- Semri Group
- Uttatur Group
- Papaghni Group
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The Correct Option is B
Solution and Explanation
Step 1: Understanding the question.
The question asks about lithostratigraphic units from the Phanerozoic Eon. The Phanerozoic Eon is known for the development of abundant life and the deposition of many sedimentary units.
Step 2: Analyzing the options.
(A) Sargur Group: The Sargur Group is from the Archaean Eon, not the Phanerozoic Eon.
(B) Semri Group: Correct — The Semri Group is a Phanerozoic unit, belonging to the Lower Gondwana sequence.
(C) Uttatur Group: The Uttatur Group belongs to the Proterozoic Eon, not Phanerozoic.
(D) Papaghni Group: This is also a Proterozoic unit, not from the Phanerozoic Eon.
Step 3: Conclusion.
The correct answer is (B) Semri Group, as it is the only Phanerozoic unit listed here.
The question asks about lithostratigraphic units from the Phanerozoic Eon. The Phanerozoic Eon is known for the development of abundant life and the deposition of many sedimentary units.
Step 2: Analyzing the options.
(A) Sargur Group: The Sargur Group is from the Archaean Eon, not the Phanerozoic Eon.
(B) Semri Group: Correct — The Semri Group is a Phanerozoic unit, belonging to the Lower Gondwana sequence.
(C) Uttatur Group: The Uttatur Group belongs to the Proterozoic Eon, not Phanerozoic.
(D) Papaghni Group: This is also a Proterozoic unit, not from the Phanerozoic Eon.
Step 3: Conclusion.
The correct answer is (B) Semri Group, as it is the only Phanerozoic unit listed here.
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