Organic matter source input, paleodepositional conditions and source rock potential of the Mid-Permian Wandrawandian siltstone, Southern Sydney Basin, Australia

Summary This study examines the organic matter source input, paleodepositional conditions and source rock potential of the Mid Permian Wandrawandian siltstone in the Southern Sydney Basin, Australia. The obtained data provide indications of a generally poor, gas-prone source rock potential, with TOC% values averaging close to ∼1% but generally low S2 values, barring some samples with a fair potential worth considering further investigation. The organic matter is thermally mature and having experienced high temperatures during burial.