Lineament study of the Semanggol Formation and adjacent areas from Landsat 8 Image

This study utilises the image of Landsat 8 for lineament mapping, covering the whole Semanggol Formation and its adjacent areas. Since Landsat 8 satellite launched on 11th February 2013, there is no detailed lineament study in the study area produced using Landsat 8 image. The objective of this study is to produce a lineament map for the Semanggol Formation and adjacent areas based on comparison of several spectral band and band combination. Landsat 8 image was digitally processed which involved atmospheric correction, geometric correction, histogram equalization and pan-sharpening to enhance the quality of the image up to 15 m resolution. Spectral band 5 and 7 and band combination of RGB 5, 4, 3, RGB 7, 5, 2 and RGB 7, 6, 4 were used to trace and map lineaments. From the lineament maps produced, band 5 image showed the best lineament traced with a total of 186 lineaments and total length of 449.0 km were mapped. Based on rose diagram analysis, N-S lineaments, NNE-SSW lineaments, and ENE-WSW lineaments are dominance for north Kedah, central Kedah, and north Perak parts respectively, and the orientation of the lineaments for both adjacent areas of the Semanggol Formation are trending to NE-SW and NW-SE directions. Fieldwork was conducted to compare orientation between fieldwork data with lineaments traced using rose diagram analysis, and the analysis showed similarities in terms of orientation direction. In conclusion, spectral band 5 of Landsat 8 image could clearly identify lineaments to produce lineament map and could be related with orientations collected from fieldwork.