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Electromagnetic profiling for groundwater in precambrian basement complex areas of Nigeria
Ground electromagnetic profiling, using a Geonics EM34-3 instrument, has been employed to identify areas of high conductivity in a Precambrian basement complex terrain of Nigeria. Field examples, conducted as part of a rural water supply programme, are presented. They indicate that the apparent cond...
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1990
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| LEADER | 00000njm a2000000a 4500 | ||
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| 001 | oai:repository.ui.edu.ng:123456789/5431 | ||
| 042 | |a dc | ||
| 720 | |a Olayinka, A.I. |e author | ||
| 260 | |c 1990 | ||
| 520 | |a Ground electromagnetic profiling, using a Geonics EM34-3 instrument, has been employed to identify areas of high conductivity in a Precambrian basement complex terrain of Nigeria. Field examples, conducted as part of a rural water supply programme, are presented. They indicate that the apparent conductivities are generally lower than about 60 mmho m-1. Subsequent borehole drilling suggests a good correlation between high EM34 anomalies, deep weathering and high well yield (> 1 1 s-1). On the other hand, boreholes sited on conductivity lows penetrated a thinner regolith with relatively lower yields. | ||
| 024 | 8 | |a Nordic Hydrology, 21, 1990. Pp. 205-216 | |
| 024 | 8 | |a ui_art_olayinka.a.i_electromagnetic_1990 | |
| 024 | 8 | |a http://ir.library.ui.edu.ng/handle/123456789/5431 | |
| 245 | 0 | 0 | |a Electromagnetic profiling for groundwater in precambrian basement complex areas of Nigeria |