| 长白山火山活动发展阶段及火山灾害评价 |
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| 引用本文： | 于宏斌,吕忠良,常永祥,姚廷才.长白山火山活动发展阶段及火山灾害评价[J].吉林地质,2004,23(4):34-37,73. |
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| 作者姓名： | 于宏斌 吕忠良 常永祥 姚廷才 |
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| 作者单位： | 吉林省区域地质矿产调查所,吉林,长春,130012 |
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| 摘 要： | 长白山地区火山活动划分二个发展阶段：以点一线形式喷发形成的广阔玄武岩台地阶段一焊缝构造发展阶段；中心式大规模喷发形成的锥状火山机构一焊点构造发展阶段，长白山地区乃至吉林东部地区中一新生代以来抬升平均速率81m／Ma及白头山一泉阳一露水河一带中生代以来存在一个火山坳陷盆地。
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| 关 键 词： | 火山活动 火山灾害 喷发 火山机构 台地 坳陷 抬升 发展阶段 东部地区 大规模 |
| 文章编号： | 1001-2427(2004)04-0034-04 |
An assessment of the developmental stages of the Changbaishan volcanic activities and volcanic disasters |
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| Abstract: | The volcanic activities in the Changbaishan area are divided into two stages: 1. The wide basalt platform stage-welding bead developmental stage, which formed by the points-lines eruption; 2. The cone volcanic apparatus-welding spots structural developmental stage, which formed large scale eruption of central type. The Changbaishan area and the eastern part of Jilin Province have been raised by average rate 81m/Ma since the Mesozoic-Cenozoic and there have been a volcanic down-warping basin in the Baitoushan-Quanyang-Lushuihe areas since the Mesozoic era. |
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| Keywords: | volcanic activities welding bead structure welding spot structure Chang-baishan area |
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