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单词 shield volcano
释义

shield volcano

noun Geology
A broad domed volcano with gently sloping sides, characteristic of the eruption of fluid, basaltic lava.Debris flow deposits, formerly called ‘polygenic breccias’, are found intercalated between the submarine shield volcano and the horizontal lava flows....
  • Mayor Island is a shield volcano with a caldera in the western part of the Bay of Plenty, off the east coast of New Zealand.
  • When gas from the magma chamber has been exhausted, the lava erupts more quietly to form a broader and lower edifice, a shield volcano.
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更新时间:2025/3/22 18:07:04