Amin E.Khalil

Islam E. Abdelaziz

Geology Department, Faculty of Science, Helwan University.

ElECTRICAL RESISTIVITY EXPERIMENT AT BAHARYA OASIS

To determine the possible extension of the iron ores outside ElGadeda mine.

To examine the possibility of using the 2D resistivity profiling in iron ore exploration.

The Objectives are:

The area of study:

ElGadeda Mine. The area of study.

The instrumentation:

The Geo-International ResMaste-616

The VES was applied at an area where the iron ore depth was known(Well 105). The benefit of this step is to define the resistivity of the iron ore and the overlying rock units.

The 2D-profiling was applied to detect the presence of iron ore in the unexplored area.

The acquisition process takes one day.

Data Acquisition

Data

2D-Profiling Data

• Wenner Array using Spaces 3-6-12-18—24-15-30.

•The total distance is 90 m.

• With total number of data

points 93.

VES Data

• Wenner array

• Using spaces 2-6-10-14-18-22-26

Data Output

VES OutputVES Data Inversion

2D Profiling output

Data Interpretation

The iron ore resistivity response about 80

Ohm/m from the VES in the area where the iron

ore exists.

The anomaly of the predicted iron ore.

The iron ore in the new area is expected at depth of 5-11 m.

The 2D resistivity profiling proved useful for the determination of the presence of the underlying iron ore.

Conclusion

Special thanks for the Egyptian Iron and Steel Company for the hosting and support.

Special thanks to Dr. Mohamed Abbas for his support to this work.

Special thanks for fourth year students for their efforts in this work.

Acknowledgement:

Thank you