If the age of the lowermost layer of a rock sample is more than 2 million years, which of the following could be the age of the upper layers? less than 1 million greater than 3.5 million between 2 million and 3 million between 3 million and 3.5 million

If the age of the lowermost layer of a rock sample is more than 2 million years, the following could be the age of the upper layers:

Less than 1 million

Option (1)

Explanation:

According to the law of Superposition, in a sequence of rocks, the rocks that are at its base are oldest, whereas the rocks that are found at the apex portion of the sequence are the youngest rocks. It shows an upward younging direction.

So from this law, we can conclude that if the age of the lowermost rocks is more than about 2 million years old then the upper younger rocks must be less than 1 million years old.

Hence, the correct answer is option (1).

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