Question:
Given below are two statements:
Assertion (A): Chronostratigraphy is concerned with the mutual time relationship of strat
A.
Reason (R): Formation, member and bed are units of chronostratigraphy.
Given below are two statements:
Assertion (A): Chronostratigraphy is concerned with the mutual time relationship of strat
A.
Reason (R): Formation, member and bed are units of chronostratigraphy.
Assertion (A): Chronostratigraphy is concerned with the mutual time relationship of strat
A.
Reason (R): Formation, member and bed are units of chronostratigraphy.
Show Hint
Formation, member and bed are lithostratigraphic units; chronostratigraphy deals with time-rock units.
Updated On: May 19, 2026
- Both A and R are correct and R is the correct explanation of A
- Both A and R are correct but R is not the correct explanation of A
- A is correct but R is not correct
- A is not correct but R is correct
Show Solution
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The Correct Option is C
Solution and Explanation
Concept:
Chronostratigraphy deals with the age and time relationship of rock strata.
Step 1: Check Assertion.
Chronostratigraphy is concerned with the mutual time relationship of strata. \[ A \text{ is correct} \]
Step 2: Check Reason.
Formation, member and bed are lithostratigraphic units, not chronostratigraphic units. \[ R \text{ is not correct} \]
Step 3: Final conclusion.
Assertion is correct, but Reason is incorrect. \[ \therefore \text{Correct Answer is (C)} \]
Chronostratigraphy deals with the age and time relationship of rock strata.
Step 1: Check Assertion.
Chronostratigraphy is concerned with the mutual time relationship of strata. \[ A \text{ is correct} \]
Step 2: Check Reason.
Formation, member and bed are lithostratigraphic units, not chronostratigraphic units. \[ R \text{ is not correct} \]
Step 3: Final conclusion.
Assertion is correct, but Reason is incorrect. \[ \therefore \text{Correct Answer is (C)} \]
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