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Geology
Earth Science (exam 2)
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which type if basaltic lava flow has a fairly smooth, unfragmented, ropy surface?
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pahoehoe
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Ashley_Mariel
Terms in this set (77)
which type if basaltic lava flow has a fairly smooth, unfragmented, ropy surface?
pahoehoe
The most violent volcanic activity is associated with_________?
composite volcanoes
Magma tends to rise toward Earth's surface principally because
rocks become less dense when they melt
a concentration of heat in the mantle capable of producing magma is called______?
hot spot
subducting oceanic crust underneath oceanic crust will produce_____?
volcanic island arc
volcanic activity in yellowstone national park is caused by______?
intraplate volcanism
How does the east African rift relate to plate tectonics?
The rift lies on a Continental rift where 2 plates are diverging
How do calderas form?
collapse of a partially emptied magma chamber
Gases like water vapor or carbon dioxide that get released from lava or magma are referred to as?
volatiles
______ is a type of basaltic lava flow that has its surfaced covered with sharp-edged, angular blocks and rubble.
Aa
