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伊通火山群

西尖山上的柱状节理。
大孤山。

吉林伊通火山群国家级自然保护区中国一个国家级自然保护区,位于吉林省中南部的伊通满族自治县以及长春市四平市公主岭市三市一县九个乡镇境内,地理坐标为东经124°50′~125°22′,北纬43°14′~43°35′,由分布在640余平方公里范围内的16座海拔230~430米孤立的火山穹丘组成,16座火山锥及周围的划定区域总面积为764.8公顷,其中核心区405.8公顷,缓冲区359公顷。

火山群位于中国东部的伊通—依兰断裂带上,火山呈并列状分布于伊舒盆地的两侧[1]。火山群形成于中新世,为玄武岩火山群。伊通火山群以复杂多变的岩石柱状节理,典型、独特的“侵出式”火山成因机制而著称[2]。1985年成为省级自然保护区,1992年升为国家级自然保护区[3]。2004年被列入吉林省级地质公园。

伊通火山群中的火山根据保护价值不同分成三个保护级别[4]

  • Ⅰ级保护:西尖山大孤山、小孤山;
  • Ⅱ级保护:东尖山、莫里青山、横头山;
  • Ⅲ级保护:团山、马鞍山、东小山、横小山、南尖山、北尖山、万宝山、南蔡山、北蔡山、馒头山。

参考资料

  1. ^ 吉林大学地球科学学院. [2011-09-28]. (原始内容存档于2005-10-27). 
  2. ^ 伊通火山群国家自然保护区. 中国网. 2008-12-04 [2011-09-27]. (原始内容存档于2016-03-05) (中文(中国大陆)). 
  3. ^ 伊通火山群国家自然保护区. 中国吉林网. 2007-04-10 [2011-09-27] (中文(中国大陆)). [永久失效链接]
  4. ^ 吉林伊通火山群国家级自然保护区情况介绍. 吉林省环保厅. 2010-09-01 [2011-09-27]. (原始内容存档于2011-11-06) (中文(中国大陆)). 
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伊通火山群
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