Minor Extrusive Flashcards
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
