“…The geology of South‐East Asia is considered a vital avenue for hydrocarbon generation and petroleum production in the Tertiary sedimentary successions (Al‐Masgari et al, 2021; Imran et al, 2020, 2021; Usman, Siddiqui, Zhang, et al, 2020). The generation of large amounts of sediments from various local sources and their deposition in the deep‐marine environments is believed to be associated with the complex geology of Borneo in the Tertiary period (Ahmed, Siddiqui, Rahman, et al, 2021; Ahmed, Siddiqui, Ramasamy, et al, 2021; Hall et al, 2008; Ogawa & Back, 2022; Siddiqui et al, 2017; Usman, Zhang, Siddiqui, & Jamaluddin., 2020). Borneo is associated with tectonic subduction coupled with obduction of ophiolites and closure of palaeo‐basins (Hall, 2013; Mathew et al, 2014; Ramkumar et al, 2021; Siddiqui et al, 2019; Usman et al, 2021; Usman, Siddiqui, Mathew, et al, 2020).…”