甘肃靖远王家山地区凝灰岩锆石U-Pb年龄及地层对比意义 |
辛补社 |
SHRIMP U-Pb Age and Its Stratigraphic Significance of Tuff at the Baojishan Area, Jingyuan County, Gansu Province |
图3 靖远王家山凝灰岩锆石阴极发光照片及锆石测点位置 Fig.3 Cathodoluminescence images and analytical points of zircons selected from Wangjiashan tuff , Jingyuan County |