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黑龙江镜泊湖地区全新世火山位于镜泊湖西北侧的“火山口森林”和蛤蟆塘两个地区。本次研究分别在“火山口森林”地区的Ⅰ号火山口、Ⅴ号火山口(大干泡)的一、二旋回层和蛤蟆塘地区的Ⅻ号火山口外围的第一旋回层的火山渣中取了3个碳化木进行~(14)C测年,其结果分别为3430±60a、2470±120a、2470±110a和3490±140a(其中Ⅴ号火山口的碳化木进行了两次测试)。根据本区存在3个火山旋回和其他地质特征以及树木的最老年龄推测,该区最后一次火山活动可能在1000～2000a之间,并且两次火山喷发间隔大约在1000a左右,由此证明镜泊湖火山是东北地区最危险的火山之一。另外,由于“火山口森林”地区和蛤模塘地区的玄武质岩石在岩石学、地球化学以及所含的包体特征存在着巨大的差异性,表明该区在3490a BP前地幔存在着强烈的不均一性,其原因可能与地幔柱的三级构造活动有关。
Heilongjiang Jingpohu Holocene volcano is located in the northwest of Jingpo Lake “crater forest” and toad pond two areas. In this study, volcanic slag of volcanic residue of No.1 volcano crater in the “crater forest” area, volcanic residue of volcanic slag Three carbonized wood was taken for ~ (14) C dating and the results were 3430 ± 60a, 2470 ± 120a, 2470 ± 110a and 3490 ± 140a, respectively (of which carbonized wood from Ⅴ crater was tested twice) . According to the existence of three volcanic cycles and other geological features and the oldest age of the trees in this area, it is speculated that the last volcanic activity in the area may be between 1000 and 2000 years, and the interval between two volcanic eruptions is about 1000 years. Lake Volcano is one of the most dangerous volcanoes in Northeast China. In addition, because of the huge difference in petrology, geochemistry and inclusion features of the basaltic rocks in the “crater forest” and clam pond areas, it shows that there is a strong Inhomogeneity may be related to the tertiary tectonic activity of mantle plumes.