摘要
吉林省龙岗火山群地质遗迹景观独特,有较高的科研价值和科普宣传价值,是我国目前最大的火山口湖群,具有较高的观赏性。生态环境良好森林覆盖率高,区内无重大污染源。整个火山群分布范围内人口密度稀,生态环境无重大破坏,多为自然生态,交通条件较便利。文中介绍了火山口湖群、火山锥、熔岩流、火山弹和火山渣等火山群地质遗迹景观。确定了龙岗火山群喷发时间最早可追溯到新生代第三纪渐新世,距今(27.3±1.03)Ma,最新则到1 600年前。
The geological relic landscape of Longgang volcanic groups of Jilin Province is unique, and has high scientiifc and popular science propaganda value, The Longgang volcano is currently the largest crater lakes area in our country, and has the high appreciation.The good forest coverage rate is high, without the sources of pollution. The Longgang volcanic distribution within the scope of population density is loose, no major damage of the ecological environment, belongs to the good natural ecological environment, and transportation is convenient. This paper introduces the crater lakes area, cones, lava lfows, volcanic bombs and cinder volcanoes and geological relic landscape. It is determined that the Longgang volcanic eruption time can date back to the Cenozoic tertiary Oligocene, （27.3-1.03）-Ma, the latest to 1 600 years ago.
出处
《吉林地质》
2014年第4期140-144,共5页
Jilin Geology
关键词
火山群
地质遗迹类型
靖宇县
volcanic cluster
types of geological remains
Jingyu County
