Organic geochemical characteristics and paleodepositional conditions of an Upper Carboniferous mud-rich succession (Yagon Siltstone): Myall Trough, southeast Australia

Maravelis, Angelos G.; Chamilaki, Elina; Pasadakis, Nikos; Vassiliou, Anthony; Zelilidis, A.

doi:10.1016/j.petrol.2017.08.065

Cited by 10 publications

(4 citation statements)

References 45 publications

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“…This review and revision are also important economically because the NSB has been exploited for high quality and quantity of coal resources [60]. The basin also exhibits high exploitation potential for coal seam gas and hydrocarbons [61][62][63]. The two scenarios have also applications to exploration geology because applying the suitable stratigraphic scenario is vital to minimize the risk of subsurface exploration and development activities and avoid potentially wasted exploration expenses.…”

Section: Proposed Revision Of the Upper Permian Nsb Stratigraphymentioning

confidence: 99%

Re-assessing the Upper Permian Stratigraphic Succession of the Northern Sydney Basin, Australia, by CA-IDTIMS

et al. 2020

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High precision Chemical abrasion-isotope dilution thermal ionisation mass spectrometry (CA-IDTIMS) U-Pb zircon results from tuff marker beds that are interstratified within the Upper Permian deposits of the northern Sydney Basin add constraints on the timing of sediment deposition, and afford a better understanding of the regional stratigraphy. The results indicate a magmatic influence during the deposition of the sediments, with episodic events spanning at least from 255.65 ± 0.08 to 255.08 ± 0.09 Ma. The zircon data suggest that the studied sedimentary rocks and tuffs have accumulated simultaneously over a short time interval, which contrasts with current stratigraphic models that suggest a much greater period of deposition and stratigraphic thickness. Therefore, an updated stratigraphic correlation of the basin is suggested, which combines the presently defined Lambton, Adamstown, and Boolaroo sub-groups into a single Lambton sub-group. This updated correlation framework is stratigraphically and geochronologically constrained and provides a more precise exploration model for the northern Sydney Basin. This case study highlights the valuable contribution of the CA-IDTIMS method in intrabasinal correlations of sedimentary successions, when integrated with a robust sedimentological framework, to minimize the stratigraphic uncertainties.

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Section: Proposed Revision Of the Upper Permian Nsb Stratigraphymentioning

confidence: 99%

Re-assessing the Upper Permian Stratigraphic Succession of the Northern Sydney Basin, Australia, by CA-IDTIMS

et al. 2020

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“…However, data from Rock Eval Pyrolysis analyses from material collected in outcrops should be treated with caution. The rocks sampled could have been subjected to processes including surface weathering and oxidation that have affected the Rock Eval Pyrolysis and TOC results [137,[148][149][150][151].…”

Section: Thermal Maturity Assessment and Source Rock Characterizationmentioning

confidence: 99%

Assessing Thermal Maturity through a Multi-Proxy Approach: A Case Study from the Permian Faraghan Formation (Zagros Basin, Southwest Iran)

et al. 2021

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This study focuses on the thermal maturity of Permian deposits from the Zagros Basin, Southwest Iran, employing both optical methods (Thermal Alteration Index, Palynomorph Darkness Index, Vitrinite Reflectance, UV Fluorescence) and geochemical analyses of organic matter (Rock Eval Pyrolysis and MicroRaman spectroscopy) applied to the Faraghan Formation along two investigated Darreh Yas and Kuh e Faraghan surface sections. Furthermore, an integrated palynofacies and lithofacies analysis was carried out in order to integrate the few studies on the depositional environment. The Faraghan Formation, which is widely distributed in the Zagros area, generally consists of shale intercalated with sandstones and pebble conglomerates in the lower part, followed by a succession of sandstone, siltstone and shaly intercalations and with carbonate levels at the top. The integrated palynofacies and lithofacies data confirm a coastal depositional setting evolving upwards to a shallow marine carbonate environment upwards. Rock Eval Pyrolysis and Vitrinite Reflectance analysis showed that the organic matter from samples of the Darreh Yas and Kuh e Faraghan sections fall in the mature to postmature range with respect to the oil to gas generation window, restricting the thermal maturity range proposed by previous authors. Similar results were obtained with MicroRaman spectroscopy and optical analysis such as Thermal Alteration Index and UV Fluorescence. Palynomorph Darkness Index values were compared with Rock Eval Pyrolysis and vitrinite reflectance values and discussed for the first time in the late stage of oil generation.

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“…It is known that the ratio composition of C 27 -C 29 regular steranes (named cholestane, ergostane, and stigmastane) in crude oil does not change significantly through the maturation process, and thus, a ternary diagram of these steranes can be used to distinguish oils from different source rocks or different organic facies in the same source rock (Peters et al, 2005;Peters, Snedden, Sulaeman, Sarg, & Enrico, 2000). Some studies have used this diagram to evaluate depositional environments and the sources of organic matter (Huang & Meinschein, 1979;Maravelis, Chamilaki, Pasadakis, Vassiliou, & Zelilidis, 2017;Riboulleau et al, 2007); however, some data show that there are obvious overlaps between crude oils from various settings (Moldowan, Seifert, & Gallegos, 1985). On the other hand, a plot of C 27 /C 29 or C 27 /(C 27 + C 29 ) regular steranes against pristane/phytane can be utilized to investigate input sources and redox conditions during sedimentation (Hossain, Sampei, & Roser, 2009;Peters & Moldowan, 1993;Sawada, 2006).…”

Section: Steranesmentioning

confidence: 99%

Variations in trace elements, isotopes, and organic geochemistry during the Hangenberg Crisis, Devonian–Carboniferous transition, northeastern Vietnam

et al. 2020

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The Hangenberg Crisis at the Devonian-Carboniferous boundary is known as a polyphase extinction event that affected more than 45 % of marine and terrestrial genera. As the cause of this event is still debated, analyses were carried out on sedimentary samples from the Devonian-Carboniferous Pho Han Formation in northeastern Vietnam to reconstruct the paleoenvironment around the time of this event using stable carbon isotopes; total sulfur; manganese; vanadium; molybdenum; and sedimentary organic matter, such as dibenzothiophenes, cadalene, and regular steranes. These geochemical signatures provide a high-resolution redox history for this section and show that transgression-driven high primary productivity, possibly enhanced by terrestrial input, caused severe oxygen depletion along the continental margin of the South China block during the Hangenberg Crisis.

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Organic geochemical characteristics and paleodepositional conditions of an Upper Carboniferous mud-rich succession (Yagon Siltstone): Myall Trough, southeast Australia

Cited by 10 publications

References 45 publications

Re-assessing the Upper Permian Stratigraphic Succession of the Northern Sydney Basin, Australia, by CA-IDTIMS

Re-assessing the Upper Permian Stratigraphic Succession of the Northern Sydney Basin, Australia, by CA-IDTIMS

Assessing Thermal Maturity through a Multi-Proxy Approach: A Case Study from the Permian Faraghan Formation (Zagros Basin, Southwest Iran)

Variations in trace elements, isotopes, and organic geochemistry during the Hangenberg Crisis, Devonian–Carboniferous transition, northeastern Vietnam

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