GEOLOGICAL AND GEOELECTRICAL CHARACTERIZATION OF THE UKOMI DIORITE DEPOSIT LOKPAUKWU, UMUCHIEZE AREA, SOUTHEASTERN NIGERIA: IMPLICATIONS FOR ESTABLISHING A QUARRY SITE

Scirj Volume I, Issue IV, November 2013 Edition
ISSN: 2201-2796

GEOLOGICAL AND GEOELECTRICAL CHARACTERIZATION OF THE UKOMI DIORITE DEPOSIT LOKPAUKWU, UMUCHIEZE AREA, SOUTHEASTERN NIGERIA: IMPLICATIONS FOR ESTABLISHING A QUARRY SITE

Ibe Kalu K., Ibeneme Sabinus I., Selemo Alex O., Nwagbara Johnbosco O., Ikoro Diugo O., Obioha Young E., Ubechu Bridget O., Chinemelu Ekeoma S. and Onwuka Chibuike O.

Abstract: Geological and Geoelectrical studies have been carried out at a potential quarry site in UkomiLokpaukwu, Umuchieze area of Southeastern Nigeria. The surveys aimed at evaluating the geological parameters and establishing the surface and downward trends of a suspected quarry rock material, through resistivity variation characteristics, prior to the location of a rock quarry as well as estimating the overburden thickness. Geological study revealed that the diorite has a mean density of 2.85 x103 kgm-3. Petrographically, laths of plagiosclase / Labradorite were set in a groundmass of smaller laths, iron oxide, olivine and pyrite. This texture is seen to be ophitic, similar to that of dolerite (diabase).The symmetrical Schlumberger configuration was used for the VES data acquisition with a maximum half current electrode spacing (AB/2) of 95m ensuring down to 63m of depth probe and potential electrode spacing of 28m. A total of twenty Six (26) VES points were established in the study area. Six (6) geoelectric sections (AA1, BB1, CC1, DD1, EE1, and FF1) were taken along NW-SE profiles (across main strike of rock mass). The diorite along profile AA1 is buried below 6 to 9m at VES 3 and 4 respectively. This indicates that the event at VES 25 and 26 continues at VES 4 and 3 deeply buried at these two locations. Along profiles BB1 and CC1, the event in B1 end is the same as the event in C end, pinching out toward BB1. The diorite continued to VES 17 and 9 points. Wherever the shale occurs, resistivity values are low (1.9 – 120 Ohm-m). Along these profiles the diorite is buried between 1.0 to 3m. Along profiles DD1 and EE1, the diorite is buried at between 2.5 and 4m at VES 20, 21, 22 and 23, having a conical structure and shown in EE1 profile with enhanced resistivity of 25-570 Ohm-m. Along profile FF1 the diorite is deeply buried at VES 18 and 19 and not encountered at VES 16 and 15.

Reference this Paper: GEOLOGICAL AND GEOELECTRICAL CHARACTERIZATION OF THE UKOMI DIORITE DEPOSIT LOKPAUKWU, UMUCHIEZE AREA, SOUTHEASTERN NIGERIA: IMPLICATIONS FOR ESTABLISHING A QUARRY SITE by Ibe Kalu K., Ibeneme Sabinus I., Selemo Alex O., Nwagbara Johnbosco O., Ikoro Diugo O., Obioha Young E., Ubechu Bridget O., Chinemelu Ekeoma S. and Onwuka Chibuike O. published at: "Scientific Research Journal (Scirj), Volume I, Issue IV, November 2013 Edition, Page 1-11 ".

Search Terms: Diorite, Geolectric, Lokpaukwu, Mineralogy, Quarry, Schlumberger configuration.

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