Bulletin of the Geological Society of Malaysia, Volume 45, May 2002, pp. 139 – 144
School of Physics, Universiti Sains Malaysia, 11800 USM Penang
Abstract: Geophysical studies were conducted in the Sungai Tok Pawang locality in Bedong, Kedah on sites which had been mined for iron ore as well as areas adjacent to them. Reconnaissance magnetic profiling over three old mining sites did not locate any anomalies significant enough to warrant further investigation. However, ground magnetic, gravity and electrical imaging surveys carried out along a network of traverses in an unmined area, adjacent to some old mining pools, detected a previously unknown probable iron ore deposit. Integrated mathematical modelling of the magnetic and gravity data shows a sizeable ore body with physical characteristics similar to previously mined deposits in the area. Follow-up detailed geophysical surveys and drilling are needed to further delineate this new iron ore body.
Abstrak: Kajian geofizik dijalankan di kawasan Sungai Tok Pawang di Bedong, Kedah atas tapak-tapak yang pernah dilombong untuk bijih besi serta kawasan-kawasan berhampiran. Pemprofilan magnet peringkat awal atas tapak perlombongan lama tidak mengesan sebarang anomali yang cukup bererti untuk penyiasatan selanjutnya. Akan tetapi, tinjauan-tinjauan magnet daratan, graviti serta pengimejan elektrik yang dilaksanakan pada suatu rangkaian rentasan di suatu kawasan yang tidak pemah dilombong, berdekatan dengan beberapa kolam lombong lama, telah mengesan kemungkinan suatu longgokan bijih besi baru. Pemodelan matematik bersepadu dengan data magnet dan graviti menunjukkan suatu jasad bijih yang agak besar dengan ciri-ciri fizikal yang serupa dengan ciri-ciri longgokan bijih yang telah dilombong di kawasan ini. Tinjauan geofizik lanjutan serta penggerudian diperlukan untuk menentukan dengan lebih terperinci kedudukan jasad bijih baru ini.
https://doi.org/10.7186/bgsm45200221
