Geology and petrology of volcanic rock in Lojing, Gua Musang

This study area was located at Kg. Panggung Lalat in Lojing, Gua Musang in area of of 25km2 . The purpose of this study is to update the geological map of the study area and to provide research on the volcanic petrography of the volcanic rocks within the study area. One of the methods used at the beginning of the research was through previous research and the literature review that has been conducted in the surrounding area. Next, geological mapping and collecting rock samples in the field are done during field work in the study area. Next, the collected samples were sent to the laboratory for analysis purposes. The methods used during laboratory analysis are microscope and microscope analysis as well as X-ray Fluorescence. In addition, analysis of the structure and geomorphology of the study area is also done through data collected during field work. The results of this study indicate that the energy that changes the geomorphology of the study area comes from the northwest. The four study areas identified were metamorphic rocks, volcanic rocks, igneous rocks and alluvial soils. Metamorphic rocks are the oldest rocks in the Gua Musang Formation where alluvium soils are the youngest rocks. The study area containing volcanic rocks comprised only five percent of the total study area. The mineral deposits in the tuff rocks are glass shard, quartz and plagioclase. The silica content in the tuff is very high and is influenced by the compounds of silica oxide, aluminium oxide and potassium oxide.