Lecture13 1

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EART 3- Geology of National Parks 2/09/04: 

EART 3- Geology of National Parks 2/09/04 OUTLINE Tectonic Setting of Yellowstone National Park Hydrothermal Features of Yellowstone Virtual Tour of Yellowstone CONCEPTS Relative size of volcanic explosions Interaction of hot rock and water

Slide2: 

Grand Canyon of Yellowstone

Slide3: 

Old Faithful Geyser

Slide4: 

Steamboat Geyser

3 Caldera Forming Explosions: 

3 Caldera Forming Explosions Huckleberry Ridge Tuff- 2 Mya ~2,500 km3 Mesa Falls Tuff- 1.2 Mya ~280 km3 Lava Creek Tuff- 0.6 Mya ~1000 km3

Slide7: 

Mesa Falls Lava Creek Huckleberry Ridge

Slide10: 

What kind of magma is erupted at Yellowstone? RHYOLITE!!!!

Hydrothermal Activity: 

Hydrothermal Activity Hot Springs- spring with temperature above body temperature (98.6 F) Mud Pot- hot spring with little water and a lot of altered rock (sediment clogged hot spring) Geyser- intermittent hot spring that erupts jets of hot water and steam Fumaroles- vent emitting gas

Slide17: 

Castle Geyser Why so many geysers in Yellowstone?

Slide18: 

Repricipitated silica (quartz) clogs conduits

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