庐枞盆地正长岩的地球物理识别基础
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李磊, 段壮
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Basis for geophysical identification of syenites in the Luzong Basin
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LI Lei, DUAN Zhuang
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表2 庐枞科钻岩石磁性统计
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Table 2 Statistical of rock magnetism from Luzong scientific drilling
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| 地质单元 | 岩石名称 | 数 量 | 磁化率/10-6 SI | 剩磁强度/(10-3 A·m-1) | Q 中值 | 地质单元统计(数 量、范围、均值) | 最小值 | 最大值 | 中值 | 地质单元统计(数 量、范围、均值) | 最小值 | 最大值 | 中值 | 上白垩统 砖桥组 | 粗安岩 | 91 | N=247 8.2~137817.2 14514.9 | 489.5 | 137817.2 | 37449.5 | N=247 0.155~32974.306
169.786 | 1.267 | 32974.306 | 238.441 | 0.2 | | 辉石粗安岩 | 20 | 1243.0 | 105023.4 | 21342.3 | 5.177 | 1766.602 | 366.339 | 0.2 | | 晶屑凝灰岩 | 19 | 11.3 | 120069.0 | 29433.9 | 0.191 | 8195.713 | 197.042 | 0.2 | | 含砾晶屑凝灰岩 | 11 | 32.4 | 103706.6 | 1416.9 | 0.468 | 754.756 | 24.655 | 0.2 | | 硬石膏化粗安岩 | 37 | 8.2 | 65346.5 | 2148.7 | 0.155 | 5109.174 | 45.033 | 0.4 | | 黄铁矿化粗安岩 | 34 | 59.9 | 64283.0 | 895.5 | 1.087 | 2812.600 | 11.939 | 0.3 | | 杏仁状粗安岩 | 13 | 793.6 | 118070.9 | 64350.5 | 7.339 | 2777.487 | 447.489 | 0.2 | | 高岭石化粗安岩 | 22 | 50.8 | 55671.5 | 841.9 | 0.756 | 426.685 | 125.004 | 0.3 | 上白垩统 正长岩 | 硅化正长岩 | 8 | N=61 89.5~84702.9 1726.3 | 89.5 | 82501.1 | 2189.1 | N=61 1.192~449.262 24.596 | 1.433 | 415.251 | 19.740 | 0.3 | | 辉石正长岩 | 5 | 733.8 | 42162.1 | 3024.1 | 9.386 | 331.883 | 45.172 | 0.3 | | 石英正长岩 | 39 | 357.4 | 84702.9 | 3574.6 | 3.632 | 449.262 | 30.387 | 0.2 | | 正长岩 | 9 | 131.0 | 1186.6 | 426.2 | 1.192 | 9.056 | 5.711 | 0.3 | 上白垩统 二长岩 | 黑云母石英二长岩 | 32 | N=50 156.0~162378.6 76973.6 | 156.0 | 118285.9 | 66861.0 | N=50 8.944~1509.819 202.632 | 8.944 | 648.466 | 154.577 | 0.1 | | 石英二长(斑)岩 | 12 | 2758.0 | 162378.6 | 48221.3 | 23.713 | 1509.819 | 227.498 | 0.1 | | 石英二长岩 | 6 | 15852.3 | 86000.3 | 53631.6 | 195.238 | 377.871 | 260.225 | 0.1 |
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