1. Volcanic rocks in the area can be divided into 3 facies zones: volcanic explosion facies, volcanic extrusion facies and volcanic sedimentary facies. 区内火山岩可划分为3个岩相带:火山爆发相、火山喷溢相和火山沉积相。
2. The volcanoes can be divided into two types: central-eruption-type and flood-basalt-type. They form a series of volcanic apparatus, including calderas, volcanic necks and cone sheets. 这些火山口可以划分成中心式火山和溢流玄武岩2种类型,形成的火山机构包括塌陷破火山口、火山颈和锥状岩席。
3. Changbai Mountain Grand Canyon, over 70 km long, is after the volcanic eruption of lava stone surface of volcanic ash and mud being washed away by the river and rain water. 长白山大峡谷长70多公里,乃火山爆发后熔岩石表面的火山灰和泥土被江水及雨水冲刷所致。
4. Glaciers covered by the ancient volcanic cone Mazha Ma volcanic eruption in the late Pleistocene when the broken crater formed by weathering and erosion from water after the expansion. 被冰川覆盖的古火山锥马扎马火山于更新世晚期喷发时形成的破火山口,经风化和侵蚀后扩大积水而成。
5. This paper analyzes geochemical features of volcanic rocks, the volcanic activity and uranium mineralization characteristics of the basin which is regarded to be a volcanic collapse basin. 文章分析了盆地的火山活动、火山岩的地球化学特点和铀矿化特征。