Question

The correct stratigraphic sequence of the following Vindhyan rocks from older to younger is:
A. Rewa Group,
B. Semri Group,
C. Bhander Group,
D. Kaimur Group. Choose the correct answer from the options given below:

• A. C, B, A, D
• B. B, A, C, D
• C. D, B, C, A
• D. B, D, A, C

Hint:

Vindhyan sequence from older to younger is Semri \(\rightarrow\) Kaimur \(\rightarrow\) Rewa \(\rightarrow\) Bhander.

Answer 1

The Correct Option is D

Concept:
The Vindhyan Supergroup is divided into several groups arranged from older to younger. Correct stratigraphic order is important for understanding geological history.

Step 1: Identify the oldest group.
The Semri Group is the oldest among the given Vindhyan groups. \[ \text{Oldest}=B \]

Step 2: Identify the next group.
After Semri Group comes the Kaimur Group. \[ \text{Second}=D \]

Step 3: Identify the next younger group.
After Kaimur Group comes the Rewa Group. \[ \text{Third}=A \]

Step 4: Identify the youngest group.
The Bhander Group is the youngest among these. \[ \text{Youngest}=C \] Therefore, the sequence from older to younger is: \[ \text{Semri} \rightarrow \text{Kaimur} \rightarrow \text{Rewa} \rightarrow \text{Bhander} \] Using the given letters: \[ B>D>A>C \] \[ \therefore \text{Correct Answer is (D)} \]