Geology and terrain analysis in Kampung Baru, Jeli, Kelantan

Kg Baru, Jeli is one of the parts of the Jeli district that dominated by small community and woodland. The landscape of this area is divided by three part that is mountainous, hilly, and plain area. This study area ranging from longitude 101º 51'45"E to 101º 54'28"E and latitudes aligned from 05º 42'33"N to 0º 39'55"N. There was a lack of information about geological mapping, structure, lithology data in Kg Baru, Jeli. Therefore, the aim of this research is to produce the geological map of the study area in scales 1: 25000 and perform terrain analysis. This study area is approximately 25km2 and located within Peninsular Malaysia's Central belt where the highest and minimum elevation is 200m and 60m respectively above the sea level. To achieve the objective, the geological mapping aspect of the current project is mainly based on fieldwork inputs including collection of samples from fresh outcrops, recording structural trends in rocks, and other field observations such as geomorphological features, drainage pattern etc. All this field related data was then processed in GIS based platform including the petrographic studies to generate geological and other thematic maps. The lithology of the study area is granite, shist and alluvium that included in the Paleozoic and Mesozoic eras. Then, a construction suitability map was created for the terrain analysis study. The terrain classification was carried out based on five parameters. Slope gradient, terrain code, activity code, erosion & instability were all analyzed to determine the classes using. There were five types of classes in the study area: cut slope (7.6 %), class I (37.9 %), class II (23.3 %), class III (1.7 %), and class IV (29.3 %). According to the slope terrain analysis, the site is primarily flat to gently sloping (>5°), accounting for 15.34 % of the project site. The gently sloping (5°< 15°) covered 19.93% of the area. The moderate slope (15<° 25°) that covered 14.19% of the site. The high slope (25° <35°) covered 13.48 square kilometers. The high slope (35°<60°) covered 32.20 % of the site, while the higher slope (>60°) covered only 4.86 percent, with most of it contributed by the cut slopes. As a conclusion, the parameters included map prepared using Weighted Overlay Method (WOM) can be benefited for engineering geology, for their planning of site investigations, preliminary design of foundation systems and the project layout of the research area.