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1980年夏,笔者等在四川青川—白水街—阳平关深断裂附近白水街北约两公里处的白家沟—山根里一带,发现该地前泥盆系“碧口群”火山岩系中有蓝闪片岩,主要矿物组合为蓝闪石—绿泥石—黝帘石。现将其简述如下。 (一)“碧口群”火山岩系剖面及蓝闪片岩赋存部位“碧口群”火山岩系,其层序由下而上为:深灰绿色玄武质凝灰岩夹熔岩、玄武质熔凝灰岩夹紫灰色铁质碧玉岩、块状墨绿色玄武岩和灰绿色薄层玄武质凝灰岩等。其中玄武岩、玄武质凝灰岩及铁质碧玉岩中分布有蓝闪片岩,且是这几类岩石的重要成分之一。
The summer of 1980, the author waits in the Sichuan Qingchuan - Baishui Street - near Yangpingguan deep fault Baishui Street, about two kilometers north of Baijiagou - Yamagan area and found that the former Devonian “Bikou Group” volcanic rocks in the blue Flash rock, the main mineral combination of glaucophane - chlorite - zoisite. Now it is summarized as follows. (1) The “Bikou Group” volcanic series and the “Bikou Group” volcanic series hosted by the “Bikou Group” have the order of dark gray-green basalt tuff lavas, basalt melted limestone violet Gray iron jasper, massive dark green basalt and gray-green thin layer of basalt tuff. Among them, basaltic rocks, basaltic tuffs and iron jasper rocks are characterized by blue flash schist and are one of the important components of these types of rocks.