Q. With reference to the intrusive volcanic landforms, consider the following statements:

Which of the statements given above is/are correct?

1 only

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2 only

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Both 1 and 2

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Neither 1 nor 2

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Solution

The correct option is C Both 1 and 2
Explanation:

Statement 1 is correct: 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.

Statement 2 is correct: A wavy mass of intrusive rocks, at times, is found at the base of synclines or at the top of the anticline in the folded igneous country. Such wavy materials have a definite conduit to source beneath in the form of magma chambers (subsequently developed as batholiths). These are called the Phacoliths.

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Similar questions

Consider the following statements about the Plutonic (intrusive) rocks observed in the field:

1. LACCOLITHS: Vertical to steeply inclined and sheet like body which Cut across the bedding of the rocks in which they intrude.

2. LOPOLITHS: These are basin or saucer-shaped concordant bodies with top nearly flat and convex bottom

3. PHACOLITHS: All intrusive igneous bodies with irregular shape, i.e. the body with no specific shape.

4. CHONOLITHS: These are concordant bodies that occur along the crests and troughs of the folded sedimentary strata.

Which of the above statements are incorrect?

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

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