Arrange the polarity reversal ages in chronological order and select the correct answer using code given below:
(A) Gauss
(B) Gillbert
(C) Brunhes
(D) Matiyama
Code :

Question

Arrange the polarity reversal ages in chronological order and select the correct answer using code given below: 
(A) Gauss 
(B) Gillbert 
(C) Brunhes 
(D) Matiyama
Code :

Accepted Answer

Here's the explanation supporting Option 2 as the correct answer:

The correct chronological order of the polarity reversal ages, from oldest to youngest, is:

*   **Gillbert (B):** This is the oldest of the four, spanning roughly from 5.333 to 3.600 million years ago (mya).

*   **Gauss (A):** This epoch comes next, ranging from approximately 3.600 to 2.58 million years ago (mya).

*   **Matuyama (D):** Following Gauss is the Matuyama epoch, which lasted from about 2.58 to 0.773 million years ago (mya). It's characterized by a reversed polarity, a key feature of this epoch.

*   **Brunhes (C):** This is the most recent epoch, starting around 0.773 million years ago and continuing to the present. It's characterized by the current normal polarity.

Therefore, the correct order is B, A, D, C, which corresponds to Option 2.

**Why other options are incorrect:**

*   **Option 1 (D, A, C, B):** This is incorrect because it places Matuyama before Gauss and Brunhes before Gillbert, which is not the correct chronological order.

*   **Option 3 (A, D, C, B):** This is incorrect because it places Gauss before Matuyama and Brunhes before Gillbert, which is not the correct chronological order.

*   **Option 4 (A, B, C, D):** This is incorrect because it places Gauss before Gillbert, Brunhes before Matuyama and Gillbert after Brunhes, which is not the correct chronological order.