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3 庐枞科钻岩石电性统计
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Table 3 Statistical of electrical properties of rocks from Luzong scientific drilling
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| 地质单元 | 岩石名称 | 数量 | 电阻率/(Ω·m) | 极化率/% | 地质单元统计
(数量、范围、中值) | 最小值 | 最大值 | 中值 | 地质单元统计
(数量、范围、中值) | 最小值 | 最大值 | 中值 | 上白垩统
砖桥组 | 粗安岩 | 78 | N=218
38.8~60154.6
2827.7 | 38.8 | 60154.6 | 8031.6 | N=218
0.2~77.1
2.1 | 0.3 | 4.6 | 1.8 | | 辉石粗安岩 | 17 | 300.6 | 13824.1 | 1968.8 | 0.2 | 2.9 | 1.6 | | 晶屑凝灰岩 | 17 | 85.0 | 15471.0 | 4951.3 | 0.6 | 4.7 | 2.4 | | 含砾晶屑凝灰岩 | 7 | 91.0 | 11983.0 | 3767.5 | 0.2 | 4.4 | 3.3 | | 硬石膏化粗安岩 | 34 | 175.5 | 14218.2 | 1335.5 | 0.7 | 6.7 | 2.2 | | 黄铁矿化粗安岩 | 33 | 100.4 | 14320.4 | 1872.5 | 1.2 | 77.1 | 5.6 | | 杏仁状粗安岩 | 13 | 197.3 | 20118.5 | 2227.8 | 1.0 | 4.4 | 2.1 | | 高岭石化粗安岩 | 19 | 40.3 | 20991.8 | 216.0 | 0.3 | 4.8 | 0.6 | 上白垩统
正长岩 | 硅化正长岩 | 3 | N=52
449.6~11764.5
3291.7 | 1601.2 | 3845.8 | 2521.2 | N=52
0.5~16.5
2.4 | 1.1 | 1.8 | 1.4 | | 辉石正长岩 | 5 | 2877.5 | 114764.5 | 4279.7 | 0.7 | 6.3 | 1.6 | | 石英正长岩 | 35 | 449.6 | 8443.7 | 3183.0 | 0.5 | 16.5 | 3.6 | | 正长岩 | 9 | 498.3 | 5719.0 | 2753.5 | 0.5 | 4.0 | 1.3 | 上白垩统
二长岩 | 黑云母石英二长岩 | 32 | N=47
428.6~15199.3
5386.2 | 1294.9 | 15199.3 | 5457.5 | N=47
1.0~34.4
2.8 | 1.0 | 5.5 | 2.6 | | 石英二长(斑)岩 | 11 | 428.6 | 10444.0 | 3918.5 | 1.3 | 34.4 | 4.9 | | 石英二长岩 | 4 | 1720.4 | 11444.3 | 4425.2 | 1.6 | 6.4 | 3.1 |
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