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Basalt is
- a)sedimentary rock
- b)metamorphic rock
- c)extrusive igneous rock
- d)intrusive igneous rock
Correct answer is option 'C'. Can you explain this answer?
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Verified Answer
Basalt isa)sedimentary rockb)metamorphic rockc)extrusive igneous rockd...
Extrusive igneous rocks erupt onto the surface, where they cool quickly to form small crystals. Some cool so quickly that they form an amorphous glass. These rocks include andesite, basalt, dacite, obsidian, pumice, rhyolite, scoria, and tuff.
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Basalt isa)sedimentary rockb)metamorphic rockc)extrusive igneous rockd...
Basalt is an extrusive igneous rock. Let's understand this in detail:
What is an igneous rock?
- Igneous rocks are formed from the solidification of molten material i.e. magma or lava.
- When magma or lava cools and solidifies, minerals crystallize and form an igneous rock.
What is basalt?
- Basalt is a common extrusive igneous rock.
- It is usually black, fine-grained, and has a dense or vesicular texture.
- Basalt is formed from lava that has flowed and solidified on the Earth's surface.
How is basalt formed?
- Basalt is formed when magma rises to the Earth's surface and solidifies quickly before it has a chance to crystallize.
- As it cools rapidly, the minerals in the lava do not have time to grow large crystals, hence, basalt has a fine-grained texture.
- Basalt lava flows are often associated with volcanic eruptions, such as shield volcanoes, cinder cones, and fissure eruptions.
Conclusion:
Based on the above information, we can conclude that basalt is an extrusive igneous rock, which is formed from lava that has flowed and solidified on the Earth's surface.
What is an igneous rock?
- Igneous rocks are formed from the solidification of molten material i.e. magma or lava.
- When magma or lava cools and solidifies, minerals crystallize and form an igneous rock.
What is basalt?
- Basalt is a common extrusive igneous rock.
- It is usually black, fine-grained, and has a dense or vesicular texture.
- Basalt is formed from lava that has flowed and solidified on the Earth's surface.
How is basalt formed?
- Basalt is formed when magma rises to the Earth's surface and solidifies quickly before it has a chance to crystallize.
- As it cools rapidly, the minerals in the lava do not have time to grow large crystals, hence, basalt has a fine-grained texture.
- Basalt lava flows are often associated with volcanic eruptions, such as shield volcanoes, cinder cones, and fissure eruptions.
Conclusion:
Based on the above information, we can conclude that basalt is an extrusive igneous rock, which is formed from lava that has flowed and solidified on the Earth's surface.
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Community Answer
Basalt isa)sedimentary rockb)metamorphic rockc)extrusive igneous rockd...
Extrusive igneous rocks erupt onto the surface, where they cool quickly to form small crystals. Some cool so quickly that they form an amorphous glass. These rocks include andesite, basalt, dacite, obsidian, pumice, rhyolite, scoria, and tuff.
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Basalt isa)sedimentary rockb)metamorphic rockc)extrusive igneous rockd)intrusive igneous rockCorrect answer is option 'C'. Can you explain this answer?
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Basalt isa)sedimentary rockb)metamorphic rockc)extrusive igneous rockd)intrusive igneous rockCorrect answer is option 'C'. Can you explain this answer? for Civil Engineering (CE) 2024 is part of Civil Engineering (CE) preparation. The Question and answers have been prepared according to the Civil Engineering (CE) exam syllabus. Information about Basalt isa)sedimentary rockb)metamorphic rockc)extrusive igneous rockd)intrusive igneous rockCorrect answer is option 'C'. Can you explain this answer? covers all topics & solutions for Civil Engineering (CE) 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for Basalt isa)sedimentary rockb)metamorphic rockc)extrusive igneous rockd)intrusive igneous rockCorrect answer is option 'C'. Can you explain this answer?.
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