Batholiths, Laccoliths, Lopoliths, Dykes, and Sills (Grade 11 NSC Matric Geography): Quizzes
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10 questions from this quiz
What happens to crystal size when magma cools very slowly deep underground?
What happens to crystal size when magma cools very slowly deep underground?
Large, coarse crystals form
What is the minimum surface area of a batholith?
What is the minimum surface area of a batholith?
Greater than 100 square km
What do the Greek words 'lopas' and 'lithos' mean in the term lopolith?
What do the Greek words 'lopas' and 'lithos' mean in the term lopolith?
Dish/bowl and rock
What happens to the underlying rocks when a lopolith forms?
What happens to the underlying rocks when a lopolith forms?
They sag downward
How does a laccolith affect overlying rocks during its formation?
How does a laccolith affect overlying rocks during its formation?
Causes them to buckle upward
What landform do batholiths, laccoliths, and lopoliths all create when exposed?
What landform do batholiths, laccoliths, and lopoliths all create when exposed?
Dome-shaped landforms
What is the most common rock type found in sills?
What is the most common rock type found in sills?
Dolerite
What landform does a dyke create when it is more resistant than surrounding rocks?
What landform does a dyke create when it is more resistant than surrounding rocks?
Serrated ridge
What causes exfoliation weathering in large intrusive igneous features?
What causes exfoliation weathering in large intrusive igneous features?
Rock expansion in heat, contraction in cool
What valuable minerals are found in the Bushveld Igneous Complex?
What valuable minerals are found in the Bushveld Igneous Complex?
Chrome and platinum-group metals