2020
DOI: 10.1038/s41598-020-71829-7
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Factors controlling accumulation of organic carbon in a rift-lake, Oligocene Vietnam

Abstract: Understanding of the processes of petroleum source rock (SR) accumulation in lacustrine rift basins and the behavior of lake systems as long-term carbon sinks is fragmentary. Investigation of an 800 m thick (500 m core and ~ 300 m outcrop), deep-lacustrine, Oligocene section in Vietnam, provides a rare insight into the controls and deposition of organic carbon (OC) and SR formation in continental rift basins. A multidisciplinary dataset, combining elemental data, inorganic and organic geochemistry with sedimen… Show more

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Cited by 6 publications
(2 citation statements)
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References 67 publications
(132 reference statements)
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“…12-13) when compared to biotic crises documented from more open ocean settings, such as the end-Triassic mass extinction (~0-0.03: Kasprak et al, 2015), and Toarcian OAE (0.01-0.04, French et al, 2014). Values are more in line with those found during the CTB at other WIS sites, such as west-central Alberta (0.07-0.21 : Furmann et al, 2015) and central Texas (up to 0.58 : French et al, 2019), alongside those values for lacustrine deposits (0.04-0.42 (Chen and Summons, 2001;Huang et al, 2020;Rizzi et al, 2020;Yin et al, 2020). This suggests that the WIS experienced particularly stratified conditions during the CTB, although local variation exists (e.g., values <0.03 in Utah; Boudinot et al, 2020).…”
Section: Stratification and Anoxiasupporting
confidence: 75%
“…12-13) when compared to biotic crises documented from more open ocean settings, such as the end-Triassic mass extinction (~0-0.03: Kasprak et al, 2015), and Toarcian OAE (0.01-0.04, French et al, 2014). Values are more in line with those found during the CTB at other WIS sites, such as west-central Alberta (0.07-0.21 : Furmann et al, 2015) and central Texas (up to 0.58 : French et al, 2019), alongside those values for lacustrine deposits (0.04-0.42 (Chen and Summons, 2001;Huang et al, 2020;Rizzi et al, 2020;Yin et al, 2020). This suggests that the WIS experienced particularly stratified conditions during the CTB, although local variation exists (e.g., values <0.03 in Utah; Boudinot et al, 2020).…”
Section: Stratification and Anoxiasupporting
confidence: 75%
“…The latter was dominated by hemipelagic sedimentation of black shales (e.g., [21]). The active rifting phase typically causes profound changes in factors controlling organic matter (OM) production and preservation (e.g., [105]).…”
Section: How Do Organic Matter Components Suppress Vitrinite Reflectance?mentioning
confidence: 99%