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shield volcano
(redirected from Shield volcanoes)

   Also found in: Encyclopedia, Wikipedia 0.01 sec.
shield volcano
n
(Earth Sciences / Geological Science) a broad volcano built up from the repeated nonexplosive eruption of basalt to form a low dome or shield, usually having a large caldera at the summit

shield volcano
See under volcano.


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Hawaii Island is recognized all over the world for their location, services and for his five separate shield volcanoes.
It's part of the Central Oregon High Cascades volcanic area, and one of the places in the state where Mother Earth played a violent hand on the landscape: Gray-black jumbles of rocks, conical contours and low, broad shapes called shield volcanoes are evidence of repeated lava flows from volcanic eruptions that occurred between 1,500 to 4,000 years ago.
They were all formed by shield volcanoes fed by a constant flow of magma from a superheated pocket in the lower mantle called a hotspot.
 
 
 
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