长白山天池从成因上分类，属于（ ）。

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SQL Error: select id,body,options from ***_enewstiku where sourceid='31029' and id < 2496602 and id<>'2496602' order by id desc limit 5 SQL Error: select id,body,options from ***_enewstiku where sourceid='31029' and id > 2496602 and id<>'2496602' order by id asc limit 5