Identifying Subsurface Features Using Magnetic Residual in Bukit Bunuh, Perak, Malaysia.

 

Dr. Rosli Saad

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

Y. C. Kiu

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

Dr. M. Mokhtar Saidin

Professor, Centre for Global Archeological Research Malaysia, 11800 Universiti Sains Malaysia, Penang, Malaysia e-mail:mmokh@usm.my

M Shyeh Sahibul Karamah

Centre for Global Archeological Research Malaysia, 11800 Universiti Sains Malaysia, Penang, Malaysia e-mail:shyehsahibul@gmail.com

 

 ABSTRACT

A ground geomagnetic residual map of details study in Bukit Bunuh, Perak was acquired, processed and analyzed. The study was aimed at delineating structural lineaments and mapping the subsurface features such as fractures and faults. The magnetic survey was conducted using Geometric G-856 Proton Precision Magnetometer using 50m station interval for 5 lines with 4 kilometers length each. A base station is set and reading taken every 1 minute. Data reduction is done and a magnetic residual map is produced using Surfer 8. The survey area is generally divided in to 2 main zones which positive and negative anomaly. Negatives anomaly showed geophysical contrast due to changes of subsurface structure. Few areas of negative anomaly areas are identified to be faults and fractures due to meteorite impact.

Keywords: Bukit Bunuh, residual, faults, shear zone.

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