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1974年我们对西北甘肃白银厂地区、青海红沟及拉脊山地区和陕西黑木林地区分布的主要火山岩(熔岩)岩石资料进行了综合整理。这些资料包括矿物成分(斜长石牌号经过费氏台或碎屑油浸测定)、化学成分及岩石结构等。综合整理后对富钠火山岩岩石类型有了进一步认识。以上四地区的火山岩都是富含钠质的火山岩,青海拉脊山地区为富钠质的安山——
In 1974, we conducted a comprehensive review of the rock information of the major volcanic rocks (lava) distributed in the Baiyinchang area in northwestern Gansu, the red ditch and the Laji Mountain area in Qinghai Province, and the Hemuqin area in Shaanxi Province. These include mineral composition (plagioclase grades tested by Freescale or debris immersion), chemical composition and rock structure. Comprehensive treatment of the type of volcanic rocks rich in sodium have been further understanding. The volcanic rocks of the above four areas are all rich in sodium volcanic rocks, and the Lajishan area in Qinghai is a sodium-rich andesite -