摘要
1∶25万和龙市幅、汪清县幅等九幅区域地质调查成果显示,华北板块北缘东段残存着数条元古代-古生代不同时期的构造岩片,这些构造岩片均经历了强烈的变形改造及变质作用叠加,记录了增生型造山带在不同演化阶段热-动力学条件。吉林东部华北板块北缘陆缘活动带东段内元古代-古生代构造地层单位的确定,对探讨吉黑地区的大地构造演化具有重要意义。
Total 9 regional geologic results including 1∶250 000 Helong and Wangqing sheet show that east part of north margin of North China plate occurred Proterozoic-Plaeozoic tectonic microlithons,they underwent strong deformation transform and superimposed metamorphism,recorded dynamothermal metamorphism of the accretion orogenic belt in different evolutionary stages.The stratigraphic unit determines an important meaning for studying geotectonic evolution in the study area.
出处
《吉林地质》
2008年第4期10-15,共6页
Jilin Geology
关键词
华北板块北缘
构造岩片
增生型造山带
构造地层单位
north margin of North China plate
tectonic microlithon
accretionary orogenic belt
tectonic stratigraphic unit
