Identification of Contact Zone using 2D Imaging Resistivity with EHR Technique

 

M.M. Nordiana

Postgradute Student
Geophysics Section, School of Physics, 11800 Universiti Sains Malaysia, Penang, Malaysia;
e-mail: nordianamuztaza@yahoo.com

Rosli Saad

Senior Lecturer (Dr.)
Geophysics Section, School of Physics, 11800 Universiti Sains Malaysia, Penang, Malaysia; e-mail:rosli@usm.my

Nur Azwin Ismail

Geophysics Section, School of Physics, 11800 Universiti Sains Malaysia, Penang, Malaysia e-mail:nurazwinismail@yahoo.com

Nisa’ Ali

Geophysics Section, School of Physics, 11800 Universiti Sains Malaysia, Penang, Malaysia e-mail: nisa_ali_89@yahoo.com

ABSTRACT

This paper illustrates findings of subsurface investigation and 2D imaging resistivity with Enhancing Horizontal Resolution (EHR) technique on a selected site at Batang Merbau, Tanah Merah, Kelantan (Malaysia). The purpose of this study is to characterize interbedded sedimentary with regards to the rock type. Four survey lines were employed at the study area. Results are presented in inversion model resistivity form. The results of the study showed that the study area has a maximum of three main zones, alluvium with resistivity value of 10-800 ?m, sandstone with resistivity value of 1000-3000 ?m and granitic bedrock with resistivity value of >3000 ?m. There is a contact zone between granite and sandstone which produces fractures. Application of 2D imaging resistivity with Enhancing Horizontal Resolution (EHR) technique was successfully used in subsurface investigation.

Keywords: Subsurface, 2D imaging resistivity, Enhancing Horizontal Resolution (EHR) technique, contact zone, fracture

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