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Question

Q. Which of the following is/are correctly matched pairs regarding Intrusive Volcanic Landforms?

Intrusive Volcanic Landforms Features
1. Batholiths A large body of magmatic material that cools in the deeper depth of the crust
2. Sill Formed by the solidification of lava almost perpendicular to the ground
3. Dykes Horizontal deposits of the intrusive igneous rocks

Select the correct answer using the code given below:

A
1 only
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B
2 only
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C
1 and 3 only
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D
1, 2 and 3
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Solution

The correct option is A 1 only

Explanation:

Pair 1 is correctly matched: Batholiths are the cooled portion of magma chambers. It is a large body of magmatic material that cools in the deeper depth of the crust moulds in the form of large domes. They appear on the surface only after the denudation processes eliminate the overlying materials.

Pair 2 is incorrectly matched: The near-horizontal bodies of the intrusive igneous rocks are called sills. The thick horizontal deposits are called sills whereas the thinner ones are called sheets.

Pair 3 is incorrectly matched: Dykes are formed when the lava makes its way through cracks and the fissures developed in the land, it solidifies almost perpendicular to the ground. It gets cooled in the same position to develop a wall-like structure.


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