豫西熊耳群火山岩中杏仁体研究及其意义

Study of Amygdales in Vulcanic Rocks of the Xiong'er Group in West Henan

河南豫西中元古界熊耳群火山岩系广泛分布,且遭受多次构造活动、岩浆侵入及剥蚀的影响。区域火山活动贯穿整个中元古代熊耳期,时间自NE向SW由早到晚。通过对熊耳群火山岩的岩石学研究,确定了熊耳群的岩石系列及火山岩中的杏仁体,通过对其中杏仁体分布、形状及内部构造的研究,可为今后有找矿勘查打好基础。

Volcanic rocks in the Middle Proterozoic Xiong＇er Group is widely distributed over west Henan and subjected to multiple tectonism, intrusion and erosion. This paper has a discussion on distribution, shape, and internal structure of amygdales in vulcanic rocks of the Xiong＇ er Group in order to provide useful information for prospecting and exploration in future.