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Flashcards in Minor Extrusive Deck (5)
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1
Q

What are hot springs? (Minor extrusive tectonics)

A

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

2
Q

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

A
  • hot springs
  • geysers
  • mud pots
  • fumaroles
3
Q

What are Geysers? (Minor extrusive tectonics)

A

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

4
Q

What are mud pots? (Minor extrusive tectonics)

A

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

5
Q

What are fumaroles? (Minor extrusive tectonics)

A

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