Anatomy of a Volcano
What is the area called where magma accumulates under a volcano?
Magma chamber
How many hawaiian islands are located directly above the hotspot?
1- the big island
What state is Yellowstone caldera located?
Wyoming, Utah and Montana
What layer of the earth's interior do Volcano occur
Lithosphere
What country is Mt. Vesuvius located?
Italy
What layer of the Earth's interior is the magma chamber connected to?
Asthenosphere
What ocean is the Hawaiian islands located?
Pacific
What was the last large eruption of yellowstone caldera?
630,000 years ago
What is a collection of volcanoes in a particular geographic site according to subduction zones called?
Volcanic arc or range
What eruption features covered the town of Pompeii
Volcanic ash and cinders
pipe where gas escapes
Hawaiian islands are an example of a...
hotspot
intra-plate volcanism
Why is Yellowstone such a destructive and violent eruption?
Caldera's allow for a large amount of Andesitic and Rhyolitic magma to accumulate and increase in amount/pressure.
A composite volcano is made up of alternating layers of what?
Lava and ash (cinders)
What is volcanic ash and cinders made from?
Burnt and exploded fragments of the volcano's rock and material
area next to the volcano with lava pushed to surface
lava dome
What kind of lava is Pahoehoe?
Basaltic
What features during the eruption occurred at least three times and destroyed structures, forests, arable land?
Pyroclastic flows
What is a parasitic cone?
A side or lateral eruption site/crater, smaller than the actual volcano.
How was Pliny the younger able to record the events of that day?
he was literate
Maintained and recovered records
What is another word for pipe or central vent, connecting the magma chamber and the central vent.
Conduit
What are the chain of seamounts which extend west of hawaii towards russia?
Emperor seamounts
Explain what a Caldera is?
A sunken depression created from an eruption emptying the chamber and causing a collapse of the above rock layer
magmatic material hardened and exposed by weathering showing the conduit of a volcano
volcanic neck
What was the type of eruption classified by this volcano?
Plinian