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प्रश्न
How do acidic igneous rocks differ from basic igneous rocks?
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उत्तर
Igneous rocks may be classified as acidic or basic depending on their chemical composition.
- Acidic igneous rocks contain more than 65% silica and a low percentage of oxides. They are light in colour and less dense.
Example: Granite. - Basic igneous rocks contain a low percentage of silica and a high percentage of oxides (such as iron and magnesium). They are dark in colour and dense.
Example: Basalt.
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संबंधित प्रश्न
Fill in the blank
Conglomerate is an example of _____________ rocks.
Classify the following rocks by selecting the correct option given below:
coal
Distinguish between the following:
Acid Igneous Rocks and Basic Igneous Rocks.
State the types of rocks for the formation of which the following process is involved.
Accumulation takes place over long periods of time in seas, lakes and streams.
What is metamorphism?
Differentiate between Rock and Mineral
How are chemically-formed sedimentary rocks produced?
Give one example of an area of: Igneous rocks
Classify and explain the rocks.
Explain the different types of sedimentary rocks.
