Intrusive Igneous Activity (Grade 10 NSC Matric Geography): Quizzes
📚Quizzes
Practise the questions
10 questions from this quiz
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Practise the questions
10 questions from this quiz
What are igneous intrusions?
What are igneous intrusions?
Rocks formed when magma cools in the crust
Which intrusive features are the largest and deepest?
Which intrusive features are the largest and deepest?
Batholiths
What is the most common rock type associated with batholiths?
What is the most common rock type associated with batholiths?
Granite
Why do rocks in batholiths have large crystals?
Why do rocks in batholiths have large crystals?
Magma cools slowly, giving crystals time
What shape are laccoliths?
What shape are laccoliths?
Dome-shaped
What is the key difference between dykes and sills?
What is the key difference between dykes and sills?
Dykes are vertical; sills are horizontal
What shape are volcanic pipes?
What shape are volcanic pipes?
Carrot-shaped
Which South African location is famous for diamond-bearing pipes?
Which South African location is famous for diamond-bearing pipes?
Kimberley in the Northern Cape
How do intrusive features become visible at Earth's surface?
How do intrusive features become visible at Earth's surface?
Weathering and erosion remove overlying rocks
Which rock type is commonly found in dykes in South Africa?
Which rock type is commonly found in dykes in South Africa?
Dolerite