Outcrop analysis and facies model of an Upper Permian tidally influenced fluvio-deltaic system: Northern Sydney Basin, SE Australia

Breckenridge, Jake; Maravelis, Angelos G.; Catuneanu, Octavian; Ruming, Kevin; Holmes, Erin; Collins, William J.

doi:10.1017/s0016756818000973

Cited by 14 publications

(43 citation statements)

References 107 publications

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“…6, the stratigraphy is much more complex than implied by Breckenridge et al. (2019). There are, in fact, numerous erosionally based conglomerate and sandstone‐dominated bodies at various stratigraphic levels.…”

Section: Fluvial Style Channel Body Geometry and Sediment Dispersalmentioning

confidence: 88%

“…It is clear, however, that Breckenridge et al. (2019, fig. 19) misidentified multiple erosion surfaces at different stratigraphic levels as the same surface.…”

Section: Fluvial Style Channel Body Geometry and Sediment Dispersalmentioning

confidence: 95%

“…Sedimentological analyses of the upper Permian Illawarra Coal Measures in the south were reported by Bamberry (1990) and Bamberry et al (1995), and of the Triassic succession by Diessel et al (1967), Ward (1972), Goldbery & Holland (1973), Conaghan et al (1982), Cowan (1993) and Dehghani (1994). In the northern limb of the basin, the upper Permian Newcastle Coal Measures have been studied sedimentologically by Diessel (1980Diessel ( , 1992, Warbrooke (1981) and Bamberry & Herbert (1996), and more recently by Breckenridge et al (2019). The overlying Triassic succession has been documented in part by Uren (1980), Cowan (1993) and Bamberry & Herbert (1996).…”

Section: The Sydney Basin Of New South Wales Australiamentioning

confidence: 99%

“…Furthermore, there are clearly multiple Facies Association A and B bodies in the succession, separated and enclosed by coal seam splits and thereby readily mapped. This is important, because a recent paper (Breckenridge et al, 2019) has posited that there is a single, regionally extensive erosion surface preserved within the Newcastle Coal Measures across the Newcastle Coalfield, separating sandstone-dominated upper delta plain strata below from conglomeratic alluvial plain strata above. It is clear, however, that Breckenridge et al (2019, fig.…”

Section: Subsurface Datamentioning

confidence: 99%

“…In the northern limb of the basin, the upper Permian Newcastle Coal Measures have been studied sedimentologically by Diessel (1980, 1992), Warbrooke (1981) and Bamberry & Herbert (1996), and more recently by Breckenridge et al. (2019). The overlying Triassic succession has been documented in part by Uren (1980), Cowan (1993) and Bamberry & Herbert (1996).…”

Section: The Sydney Basin Of New South Wales Australiamentioning

confidence: 99%

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Sedimentology of the continental end‐Permian extinction event in the Sydney Basin, eastern Australia

et al. 2020

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Upper Permian to Lower Triassic coastal plain successions of the Sydney Basin in eastern Australia have been investigated in outcrop and continuous drillcores. The purpose of the investigation is to provide an assessment of palaeoenvironmental change at high southern palaeolatitudes in a continental margin context for the late Permian (Lopingian), across the end-Permian Extinction interval, and into the Early Triassic. These basins were affected by explosive volcanic eruptions during the late Permian and, to a much lesser extent, during the Early Triassic, allowing high-resolution age determination on the numerous tuff horizons. Palaeobotanical and radiogenic isotope data indicate that the end-Permian Extinction occurs at the top of the uppermost coal bed, and the Permo-Triassic boundary either within an immediately overlying mudrock succession or within a succeeding channel sandstone body, depending on locality due to lateral variation. Late Permian depositional environments were initially (during the Wuchiapingian) shallow marine and deltaic, but coastal plain fluvial environments with extensive coal-forming mires became progressively established during the early late Permian, reflected in numerous preserved coal seams. The fluvial style of coastal plain channel deposits varies geographically. However, apart from the loss of peat-forming mires, no significant long-term change in depositional style (grain size, sediment-body architecture, or sediment dispersal direction) was noted across the end-Permian Extinction (pinpointed by turnover of the palaeoflora). There is no evidence for immediate aridification across the boundary despite a loss of coal from these successions. Rather, the end-Permian Extinction marks the base of a long-term, progressive trend towards better-drained alluvial conditions into the Early Triassic. Indeed, the floral turnover was immediately followed by a flooding event in basinal depocentres, following which fluvial systems similar to those active prior to the end-Permian Extinction were re-established. The age of the floral extinction is constrained to 252.54 AE 0.08 to 252.10 AE 0.06 Ma by a suite of new Chemical Abrasion Isotope Dilution Thermal Ionization Mass Spectrometry U-Pb ages on zircon grains. Another new age indicates that the return to 30

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Section: Fluvial Style Channel Body Geometry and Sediment Dispersalmentioning

confidence: 88%

“…It is clear, however, that Breckenridge et al. (2019, fig. 19) misidentified multiple erosion surfaces at different stratigraphic levels as the same surface.…”

Section: Fluvial Style Channel Body Geometry and Sediment Dispersalmentioning

confidence: 95%