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geology
hah
13
Geology
Undergraduate 4
10/31/2017

Additional Geology Flashcards

 


 

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Term
Pyroclastic Flow
Definition
particularly spectaculat and often deadly , occur when a volcano ejects hot ash and gases in a glowing cloud rolls downhill
Term
Shield Volcano
Definition
A lava cone is built successive flows of lava from a central vent.
Term
Strato Volcano
Definition
Aternating lava flows and beds of pyroclasts build concave shaped compostie volcano.
Term
Crater
Definition
A bowl shaped pit. Found at the summit of most volcanic mountains.
Term
Caldera
Definition
a large steep walled , basin shaped depression much larger
Term
Diatreme
Definition
Earths deep interior escapes explosivley the vent and feeder channel
Term
Fissure eruptions
Definition
main style of volcanism along mid ocean ridges, where new oceanic crust is formed.
Term
Flood basalts
Definition
flows often pile up into immense basalt plateaus.
Term
Hot spots
Definition
fixed relative to one another as if they were blow torches
Term
Mantle Plume
Definition
deep as the core mantle boundary
Term
Large Igneous provinces
Definition
are large volumes of predominatly mafic extrusive and intrsive igneous rocks
Term
Lahars
Definition
most dangerous volcanic events are the torrential flows of wet volcanic debris
Term
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Definition
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