西祁连清水沟地区火山岩岩石学特征及旋回研究

Study on Petrological Characteristics and Cycle of Volcano Rocks in Qingshuigou Area of Western Qilian Mountain

摘要:

西祁连当金山清水沟一带的寒武纪火山岩发育在寒武纪拉配泉岩群火山岩组。对该火山岩分布特征和岩石学特征进行了研究，划分了3类火山岩岩相：爆发相、沉积相、喷溢相，并对火山岩喷发旋回进行了研究，揭示了当金山地区地层演化特征，对火山岩区域对比及火山机构恢复具有一定的指导意义。

Abstract:

Cambrian volcano rocks in DangjinshanQingshuigou area in western Qilian mountain developed in volcano rock group in Cambrian Lapeiquan group. Distribution characteristics of the volcano rock and petrological characteristics have been studied and divided into 3 types of volcano rock facies, such as eruption facies, sedimentary facies and effusive facies. Volcano eruption cycles have been studied as well. The formation evolution characteristics in Dangjinshan area has been revealed. It has a certain guiding significance for the comparison of volcanic rock areas and the recovery of volcanic mechanism.