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Sigma KEE - Volcano
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火山
A Volcano in the broadest sense, i.e., a region containing a vent through which magmous and/or pyroclastic materials are passed from the interior of the Earth to its surface (atmospheric or underwater).
Relationships      
Parents 土地形式 A LandForm is the class of geographically and/or geologically distinct areas that occur on Earth's surface, including mountains, hills, plains, valleys, deltas, and features of submerged land areas such as the ocean floor.
Children 火山錐A VolcanicCone is a hill of lava or pyroclastics surrounding a volcanic vent. Not as high as a VolcanicMountain.
 火山A VolcanicMountain is a cone-shaped mountain formed out of rock or ash thrown up from inside the earth, frequently with an opening or depression at the top.


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