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熊耳群中基－中酸性火山岩系是熊耳山区最为重要的产金层，其形成时代大致相当于华北地区的长城系，为华北地台南缘结晶基底之上的第一套盖层沉积。多年来，中元古代早期华北地台南缘构造框架颇有争议。本文从熊耳群火山岩系的分布形态、与基底的接触关系、常量、微量元素特征、稀土之素特征诸方面证实了熊耳群火山岩系为典型大陆裂谷喷发的产物，并非陆缘火山岛弧成因。
The Xiong’er Group The Meso-Mesic Acid Volcanic Rock is the most important gold-bearing layer in Xiong’ershan area. Its formation age is roughly equivalent to the Great Wall System in North China and is the first caprock to be deposited on the crystalline basement of the southern margin of North China. Over the years, the structural framework of the southern margin of the North China Platform in the Early Proterozoic was quite controversial. This paper confirms that the Xiong’er Group volcanic rocks are the product of the typical continental rift eruption in terms of the distribution of the Xiong’er Group volcanic rocks, the contact with the basement, the constants, trace element characteristics and REE characteristics. .