Distinction of the Type of Mudstone at Bukt Chondong, Perlis Using 2-D Resistivity Method

Summary The study explores the use of 2-D resistivity method to identify the type of mudstone from the outcrop of Bukit Chondong (BC), Perlis. The distinction of mudstone is based from the comparison of resistivity values of different mudstone, which are the red mudstone and the grey mudstone from outcrop of Guar Jentik (GJ) and Utan Aji (UA) in Perlis. All the survey outcrops was identified within the same classification of Kubang Pasu Formation. The resistivity survey was performed using SAS4000 Terrameter with Pole-dipole array configuration. The resistivity was implemented on a single 40 m survey line with minimum 1 m electrode spacing. The resistivity data was processed by utilizing RES2DINV and Surfer 10 software which the inversion results was displayed in a form of contouring values. The range of resistivity value for red mudstone is 10 to 150 Ωm and grey mudstone is 120 to 500 Ωm. The resistivity value for mudstone of BC is 20 to 130 Ωm, which fall in the range values of red mudstone. Thus, mudstone of BC has the possible to be classified as red mudstone.