An appraisal of the regional reconnaissance geophysical, geochemical and geological data obtained under the Central Belt Project in 1977 – 1978 appeared to constitute favourable uranium exploration targets. Follow-up surveys conducted until the year 1990 have proposed the exploration area to be divided into three transects. Transect 1 covers the western part of the state of Kelantan, northwest Pahang and the eastern half of Perak. Transect 2 covers southeastern tip of Perak, west Pahang, eastern half of Wilayah Persekutuan, eastern portion of Selangor, and the northwest portion of Negeri Sembilan. Transect 3 covers central Kelantan, northwestern of Terengganu and northern portion of Pahang. Results of the study indicate that the Main Range, Bujang Melaka, and Bukit Tinggi Plutons are most fertile with uranium spectrometric rock values range from 13 to 25 ppm. Further investigations to zero down the target areas for uranium mineralization are strongly recommended over these areas.
Geophysical surveys in particular Ground Penetrating Radar (GPR), geoelectrical Resistivity Tomography (ERT) and Vertical Resistivity Probe (VRP) were used in mapping the subsurface geological structures and groundwater contaminants at Sungai Kandis, Klang to identify the approximate boundaries of contaminant plumes and to provide stratigraphic information at this site. The study area was formerly an illegal dumping site of hydrocarbon and toxic waste. A good correlation exists between GPR signatures, ERT layers, vertical resistivity probe and the contaminated soil. The presence of contaminant plumes as well as the water table are also observed in the GPR and ERT sections at depths approximately of 0.5 to 1 m. In this study, a total of 16 GPR traverses and 10 ERT lines with lengths from 30 to 100 m were established. VRP measurements were conducted in 14 shallow boreholes with a maximum depth of about 1 m. The VRP results show high apparent resistivity values ranging from 200 to 10000 Ωm associated with an oil contaminated layer. The presence of this layer was also detected in the 2D resistivity sections as a thin band of high resistivity values ranging from 60 to 200 Ωm. In the GPR section, the oil contaminated layer exhibits discontinuous, subparallel and chaotic high amplitude reflection patterns.
Satu kajian menggunakan kaedah pengimejan elektrik dan georadar telah dijalankan di Taman Hill View, Ampang, Selangor yang telah mengalami kejadian tanah runtuh. Gelinciran ini adalah susulan daripada tiga kejadian tanah runtuh yang berlaku di sekitar kawasan Hulu Klang, Selangor terutamanya di sekitar Bukit Antarabangsa. Tujuan kajian adalah untuk mengenal pasti ciri-ciri bahan runtuhan dan kedalaman batuan dasar melalui survei pengimejan elektrik serta pencirian kawasan rekahan, retakan dan zon lemah melalui survei georadar. Survei dilakukan berhampiran dengan lubang-lubang gerudi di sepanjang beberapa teres potongan cerun. Jarak elektrod yang digunakan ialah 2.0-2.5m. Berdasarkan jumlah elektrod yang digunakan ialah 41, ini bermakna jarak maksimum elektrod arus ialah 80-100m dan kedalaman maksimum yang diukur ialah 20 hingga 25 m. Kaedah Radar Penusukan Bumi pula menggunakan gelombang elektromagnet berfrekuensi 100 MHz. Model keberintangan elektrik menunjukkan profil luluhawa batuan granit dengan julat keberintangan antara 2 hingga 7000 Ωm. Pola atau zon keberintangan rendah yang berada di antara zon keberintangan tinggi ditafsirkan mewakili rekahan dan sesar dalam batuan granit yang mengalami luluhawa dan berkemungkinan berisi air pada kedalaman 4 hingga 5 m. Keratan rentas keberintangan menunjukkan kedudukan kawasan rekahan, retakan dan zon lemah tersebut. Keratan rentas yang diperolehi hasil survei radar penusukan bumi
juga membuktikan dengan lebih jelas akan kehadiran sesar dan retakan yang terdapat dalam zon luluhawa batuan granit di kawasan kajian melalui kewujudan anjakan-anjakan pemantul dan ciri-ciri pemantul yang terputus.