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嵩县黄庄—汝阳三屯一带熊耳群火山岩分布区属构造变动强烈的中深剥蚀区。依据岩石岩相标志、断裂构造形迹、火山岩区的产状以及地貌标志等，区内首次识别出了活动于鸡蛋坪期、马家河期的五个古火山口和一个古裂隙喷发带，并对许山期的火山活动特征进行了分析。熊耳群火山活动的早期为北西向的裂隙喷溢；中期以中心式喷发为主，并伴有裂隙式喷发；晚期演化为中心式喷发。区域火山活动表现为自北东向南西由早到晚
The distribution of volcanic rocks in Xiong’er Group in Huangzhuang-Ruyang Sandun, Songxian County belongs to the middle-deep denudation zone with strong structural changes. Based on the lithofacies signs, the rupture structures, the occurrence of volcanic areas and the geomorphological landmarks, the five ancient crater and one ancient fissure eruption belt that are active in Egg Ping period and Majiahe period were identified for the first time Mountain volcanic activity characteristics were analyzed. The earliest volcanic activity in the Xiong’er Group was jet-fissured to the northwest direction. In the middle period, the central eruption was mainly accompanied by a fissure eruption and the late eruption was a central eruption. Regional volcanic activity from north to south to west from morning to night