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
表1 粗面岩(D2022)锆石LA-ICP-MS年代学分析结果
Table 1 Chronological analysis results of trachyte (D2022) zircon by LA-ICP-MS
样品号 含量/10-6 同位素比值 年龄/Ma
Pb 232Th 238U Th/U 207Pb/
235U		 2σ 206Pb/
238U		 2σ 207Pb/
206Pb		 2σ 208Pb/
232Th		 2σ 206Pb/
238U		 2σ 207Pb/
235U		 2σ 208Pb/
232Th		 2σ
D2022-1 3.0 62.5 94.0 0.66 0.177 0.021 0.0251 0.0007 0.0515 0.006 0.0081 0.0007 159.7 4.5 162.0 18.0 162.0 14.0
D2022-2 2.6 66.1 77.4 0.85 0.181 0.028 0.0253 0.0008 0.0530 0.009 0.0086 0.0007 161.0 5.3 162.0 24.0 174.0 14.0
D2022-3* 6.0 57.2 82.9 0.69 1.490 0.190 0.0305 0.0014 0.3230 0.034 0.0399 0.0043 193.6 8.5 829.0 73.0 784.0 82.0
D2022-4 2.3 46.0 74.5 0.62 0.179 0.029 0.0254 0.0011 0.0504 0.008 0.0079 0.0010 161.9 6.8 160.0 25.0 160.0 21.0
D2022-5 3.2 63.3 100.8 0.63 0.164 0.021 0.0251 0.0007 0.0478 0.006 0.0086 0.0007 159.7 4.6 149.0 18.0 173.0 13.0
D2022-6 2.8 58.3 85.7 0.68 0.165 0.021 0.0253 0.0007 0.0485 0.006 0.0083 0.0007 161.3 4.7 149.0 19.0 167.0 13.0
D2022-7 2.8 58.7 84.6 0.69 0.178 0.024 0.0254 0.0008 0.0513 0.007 0.0085 0.0007 161.8 4.7 161.0 21.0 170.0 13.0
D2022-8 2.7 48.8 88.6 0.55 0.166 0.019 0.0251 0.0008 0.0477 0.006 0.0083 0.0009 159.7 4.7 151.0 17.0 166.0 18.0
D2022-9 2.1 36.3 67.6 0.54 0.162 0.025 0.0255 0.0008 0.0458 0.007 0.0093 0.0009 162.0 5.1 145.0 22.0 187.0 17.0
D2022-10 2.6 45.8 81.0 0.56 0.175 0.021 0.0253 0.0007 0.0531 0.007 0.0089 0.0008 161.0 4.4 158.0 18.0 180.0 15.0
D2022-11 2.9 57.3 82.9 0.69 0.201 0.037 0.0253 0.0009 0.0610 0.011 0.0093 0.0013 161.1 5.4 176.0 31.0 187.0 27.0
D2022-12 2.4 46.6 80.6 0.58 0.175 0.033 0.0251 0.0009 0.0498 0.009 0.0084 0.0010 160.0 5.7 157.0 28.0 169.0 20.0
D2022-13 2.4 39.9 73.2 0.55 0.163 0.035 0.0250 0.0010 0.0500 0.010 0.0097 0.0013 159.3 6.5 148.0 31.0 194.0 27.0
D2022-14 2.1 39.8 64.9 0.61 0.175 0.026 0.0251 0.0008 0.0500 0.008 0.0080 0.0008 159.7 4.9 154.0 22.0 162.0 17.0
D2022-15 1.6 30.2 53.4 0.57 0.169 0.040 0.0257 0.0012 0.0500 0.012 0.0080 0.0012 163.6 7.5 154.0 36.0 161.0 23.0
D2022-16 2.9 56.6 83.5 0.68 0.191 0.025 0.0256 0.0009 0.0552 0.007 0.0088 0.0009 163.0 5.8 174.0 22.0 177.0 18.0
D2022-17 3.3 88.8 92.9 0.96 0.201 0.046 0.0261 0.0014 0.0570 0.014 0.0084 0.0013 166.0 8.7 181.0 39.0 169.0 26.0
D2022-18 1.7 30.1 52.8 0.57 0.166 0.035 0.0254 0.0011 0.0480 0.010 0.0091 0.0013 161.3 6.9 148.0 30.0 182.0 26.0
D2022-19 1.9 32.8 59.8 0.55 0.180 0.032 0.0250 0.0010 0.0540 0.010 0.0084 0.0013 159.2 6.6 160.0 27.0 169.0 26.0
D2022-20 2.0 39.1 62.4 0.63 0.174 0.025 0.0257 0.0009 0.0502 0.008 0.0088 0.0010 163.7 5.6 158.0 22.0 176.0 20.0