丘吉东沟群
丘吉东沟群(Qiujidonggou Gr.)的时代属青白口纪。分布于青海都兰一带。为细碎屑岩夹细石英砂岩及硅质白云岩,厚1500米。含叠层石Conophyton qiujidonggouense,微古植物Trematosphaeridium sp.、Laminarites sp.等。砂质板岩Rb Sr等时线年龄6.76±0.65亿年。[1]
丘吉东沟群(Qiujidonggou Gr.)的时代属青白口纪。分布于青海都兰一带。为细碎屑岩夹细石英砂岩及硅质白云岩,厚1500米。含叠层石Conophyton qiujidonggouense,微古植物Trematosphaeridium sp.、Laminarites sp.等。砂质板岩Rb Sr等时线年龄6.76±0.65亿年。[1]