Deep layers are mainly characterized by inconspicuous faulted contact and lava characteristics at the Songliao basin.
松辽盆地深层资料复杂，断层接触关系不清楚，火山岩特征不明显。
On Heilongjiang basin volcanic rock mainly for basic, acidic lava, pyroclastic rocks, may divide 5 volcanic rock belts.
上黑龙江盆地火山岩主要为基性、中酸性的熔岩、火山碎屑岩，可划分5个火山岩带。
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