冀西北宣化盆地髫髻山组粗面岩年代学、地球化学特征及其地质意义

杨济远, 胡新茁, 周敬, 齐朋超, 李泽阳, 孟家葆, 许凡, 张会彬, 齐慧云

Chronology and geochemical characteristics of trachytes in the Tiaojishan Formation, Xuanhua Basin, northwestern Hebei Province, and their geological implications

YANG Ji-Yuan, HU Xin-Zhuo, ZHOU Jing, QI Peng-Chao, LI Ze-Yang, MENG Jia-Bao, XU Fan, ZHANG Hui-Bin, QI Hui-Yun

图5 宣化盆地髫髻山组粗面岩TAS图解(a)[39]和w(K2O)-w(SiO2)图解(b)[40-41] 1—苦橄玄武岩;2—玄武岩;3—玄武安山岩;4—安山岩;5—英安岩;6—流纹岩;7—粗面玄武岩;8—玄武质粗面安山岩;9—粗面安山岩;10—粗面岩、粗面英安岩;11—响岩;12—碱玄质响岩;13—响岩质碱玄岩;14—碱玄岩、碧玄岩;15—副长石岩

Fig.5 TAS diagram (a) [39] and w(K2O)-w(SiO2) diagram (b)[40-41]of trachytes in the Tiaojishan Formation, Xuanhua Basin 1—picrite basalt;2—basalt;3—basaltic andesite;4—andesite;5—dacite;6—rhyolite; 7—trachybasalt;8—basaltic trachyandesite;9—trachyandesite;10—trachyte,trachyte dacite; 11—phonolite;12—alkalinite phonolite;13—phonolitic alkali basalt;14—alkali basalt, basalt; 15—subfeldspar rock