Geochemistry and petrology of selected sediments from Bukit Song, Miri, Sarawak, Malaysia, with emphasis on organic matter characterization

Abstract The aim of this study is to provide a better understanding the type source input, quality, quantity, condition depositional environment and thermal maturity organic matter from Bukit Song, Sarawak, which has not been extensively studied for hydrocarbon generation potential. Petrological geochemical analyses were performed on 13 outcrop samples location. Two samples, having III mixed kerogen, showed very-good-to-excellent petroleum potential based bitumen extraction data Rock–Eval analysis. rest are inert—kerogen IV. In terms vitrinite reflectance, results paper akin previous studies done in nearby region reported as either immature or early mature. Ph/ n -C 18 versus Pr/ 17 that major concentration within peat coal environment, whilst two associated with anoxic marine , confirmed by maceral content well. Macerals mainly indicated terrestrial precursors and, overall, dominance vitrinite. Quality rock TOC parameter above 2 wt. % majority samples. However, consideration S together only have rocks. Existence cutinite, sporinite greenish fluorescing resinite macerals corroborated immaturity analysed coaly Varying degrees staining existed few Kaolinite illite clays XRD analysis, potentially indicate low porosity. This revealed hydrocarbon-generating Song Sarawak low.