Difference between revisions of "Volcanic ash"
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Latest revision as of 16:18, 2 February 2006
화산에서 분출된 용암의 세립이나 파편을 말하며 이것이 퇴적된 것을 응회암이라 함
- This page was last edited on 2 February 2006, at 16:18.
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