GEO ELECTRICAL RESISTIVITY SURVEY FOR GROUNDWATER INVESTIGATION IN QUATERNARY DEPOSITS AND BASEMENT TERRAIN AROUND LAGAWA AREA SUDAN
| المصدر: | مجلة جامعة غرب كردفان للعلوم والإنسانيات |
|---|---|
| الناشر: | جامعة غرب كردفان |
| المؤلف الرئيسي: | Ginaya, Mohammed Adam (Author) |
| المجلد/العدد: | ع8 |
| محكمة: | نعم |
| الدولة: |
السودان |
| التاريخ الميلادي: |
2014
|
| الشهر: | ديسمبر |
| الصفحات: | 87 - 104 |
| ISSN: |
1858-6554 |
| رقم MD: | 792907 |
| نوع المحتوى: | بحوث ومقالات |
| اللغة: | الإنجليزية |
| قواعد المعلومات: | HumanIndex |
| مواضيع: | |
| رابط المحتوى: |
| المستخلص: |
Lagawa and the surrounding area are suffering from shortage of drinking water, in particular during the dry season. Pre-Cambrian Basement Complex rocks underlain the study area. The basement rocks including Precambrian basement and younger anorogenic intrusive complexes. The older basement is represented by granitic gneisses and schists. The groundwater occurs in the Wadi alluvial deposits and weathered and fractured basement in the area. Six (6) horizontal electrical profiles (HEP) and six (6) spontaneous potential profiles (SPP) were conducting across the area, where as seven (7) vertical electrical soundings (VES) were carried along the profiles at the sites of detected anomalies by (HEP) and (SPP) methods. OYO MCHOM model 2119 Tetrameter applying Schlumberger configuration for all methods. The field data (VES) were processed and interpreted using standard curve matching approach and iterative vertical electrical sounding interpretation software IX1D version 2.07. The HEP & SPP show many anomalies that indicate fault line or fracture zones. The (VES) interpretation results show a subsurface of three zones, which are topsoil (alluvial deposits), weathered basement and fresh basement. So the final interpretation results detect that the best points for locating wells in the study area are VESs ; VES1, VES2, VES5 and 6. |
|---|---|
| ISSN: |
1858-6554 |
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