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1 宣化盆地一带区域构造(a)(据甄世民等[31]修编)及地质简图(b)(据白春东等[32]修编) 1—第四系;2—张家口组;3—土城子组;4—髫髻山组二段;5—髫髻山组一段;6—九龙山组;7—雾迷山组;8—高于庄组;9—花岗斑岩;10—角度不整合接触界线;11—正断层及倾角;12—性质不明断层;13—飞来峰构造;14—地层产状;15—火山口;16—取样位置

Fig.1 Sketch map of the regional structure (a) (simplified according to Zhen S M, et al. [31])and geological sketch (b) of the Xuanhua Basin (simplified according to Bai C D,et al[32]) 1—Quaternary;2—Zhangjiakou Formation;3—Tuchengzi Formation;4—the second section of Tiaojishan Formation;5—the first section of Tiaojishan Formation;6—Jiulongshan Formation;7—Wumishan Formation;8—Gaoyuzhuang Formation;9—granite porphyry;10—angle unconformity contact boundary;11—normal fault and dip;12—fault of unknown nature;13—Feilaifeng structure;14—formation occurrrence;15—volcanic crater;16—sampling position