Yellowstone

Tectonism : Present day Y.S results from that mantle plume (hotspot) interacting with continental crust 

• False

• True

Volcanism create

• Stratovolcanoes

• extrusive igneous rocks

• earthquakes

• Caldera

Steeper slopes create

Pyroclastic

• Tephra

• Rock = Tuff

• ash, lapilli, bombs

• volcano = breccia

Calderas form from

Earthquakes

Thick and widespread Rhyolite

• Heavily fractured - provides a “plumbing system” rapidly moves cold water down and hot water up

•  also provides silica (75%)**** to make silica sinter - geyserite

What does the magma chamber provide

Why do earthquakes happen in Yellowstone

• “All shook up”, keeps the “plumbing system” open to supply hot water to thermal features

• Calderas

• hotsprings that have their own plumbing systems

Hotsprings are