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Flashcards in Minor Extrusive Deck (5)
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1

What are hot springs? (Minor extrusive tectonics)

Formed when rain and snow seeps through bed rock and becomes superheated from the molten rock below

2

What are the 4 main forms of minor extrusive activity? (Minor extrusive tectonics)

•hot springs
•geysers
•mud pots
•fumaroles

3

What are Geysers? (Minor extrusive tectonics)

Rare forms of hot springs that form when plumbing constrictions prevent the superheated water from circulating - pressure builds and eventually blows

4

What are mud pots? (Minor extrusive tectonics)

Steaming vents of hydrogen sulphide and heated pools of surface water turning underlying rock into clay

5

What are fumaroles? (Minor extrusive tectonics)

Hydrothermal features with limited water supply that boils before reaching the surface. Steam emerges from the vent