Age of the Yarrabee and accessory tuffs: implications for the upper Permian sediment-accumulation rates across the Bowen Basin

Ayaz, S.A.; Martin, Michael; Esterle, Joan; Amelin, Y.; Nicoll, Robert S.

doi:10.1080/08120099.2016.1255254

Cited by 23 publications

(13 citation statements)

References 19 publications

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“…These estimates have provided a mid-Wuchiapingian age (ca. 258.0 Ma) for the lower boundary (Metcalfe et al, 2015;Ayaz et al, 2016;Phillips et al, 2018) and a Changhsingian age for the upper boundary (Metcalfe et al, 2015;Fielding et al, 2019;Fig. 1).…”

Section: Dulhuntyispora Parvithola Zonementioning

confidence: 99%

“…Independent correlation proxies in eastern Australia have resulted in arguably the best age-constrained terrestrial Permian to Lower Triassic palynostratigraphic scheme in the world (Stephenson, 2018). These proxies have included stable carbon isotopes (Morante, 1996;Williams et al, 2017), lithostratigraphic markers (Michaelsen, 2002;Wheeler et al, 2019), and recent radiogenic-isotope ages from U-Pb chemical abrasion-isotope dilution-thermal ionization mass spectrometry (CA-ID-TIMS) of zircons (Metcalfe et al, 2015;Ayaz et al, 2016;Phillips et al, 2018;Fielding et al, 2019). These data support approximately synchronous Lopingian (upper Permian) to Lower Triassic palynological zones across eastern Australia (Laurie et al, 2016).…”

Section: Permian-triassic Palynostratigraphy Of Gondwanamentioning

confidence: 99%

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Refined Permian–Triassic floristic timeline reveals early collapse and delayed recovery of south polar terrestrial ecosystems

et al. 2019

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The collapse of late Permian (Lopingian) Gondwanan floras, characterized by the extinction of glossopterid gymnosperms, heralded the end of one of the most enduring and extensive biomes in Earth’s history. The Sydney Basin, Australia, hosts a near-continuous, age-constrained succession of high southern paleolatitude (∼65–75°S) terrestrial strata spanning the end-Permian extinction (EPE) interval. Sedimentological, stable carbon isotopic, palynological, and macrofloral data were collected from two cored coal-exploration wells and correlated. Six palynostratigraphic zones, supported by ordination analyses, were identified within the uppermost Permian to Lower Triassic succession, corresponding to discrete vegetation stages before, during, and after the EPE interval. Collapse of the glossopterid biome marked the onset of the terrestrial EPE and may have significantly predated the marine mass extinctions and conodont-defined Permian–Triassic Boundary. Apart from extinction of the dominant Permian plant taxa, the EPE was characterized by a reduction in primary productivity, and the immediate aftermath was marked by high abundances of opportunistic fungi, algae, and ferns. This transition is coeval with the onset of a gradual global decrease in δ13Corg and the primary extrusive phase of Siberian Traps Large Igneous Province magmatism. The dominant gymnosperm groups of the Gondwanan Mesozoic (peltasperms, conifers, and corystosperms) all appeared soon after the collapse but remained rare throughout the immediate post-EPE succession. Faltering recovery was due to a succession of rapid and severe climatic stressors until at least the late Early Triassic. Immediately prior to the Smithian–Spathian boundary (ca. 249 Ma), indices of increased weathering, thick redbeds, and abundant pleuromeian lycophytes likely signify marked climate change and intensification of the Gondwanan monsoon climate system. This is the first record of the Smithian–Spathian floral overturn event in high southern latitudes.

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Section: Dulhuntyispora Parvithola Zonementioning

confidence: 99%

Section: Permian-triassic Palynostratigraphy Of Gondwanamentioning

confidence: 99%

Refined Permian–Triassic floristic timeline reveals early collapse and delayed recovery of south polar terrestrial ecosystems

et al. 2019

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“…Ultimately, a scheme based on the first appearance of specific index taxa similar to the scheme of sections calibrated by radiometric age dates used in Australia (Price, 1997;Laurie et al, 2016) would potentially be extremely useful in developing more accurate intrabasinal correlations in the Main Karoo Basin. However, abundant ashfall tuff marker beds spanning the Sydney, Gunnedah and Bowen basins allow for verification of absolute ages over large distances (Metcalfe et al, 2015;Nicoll et al, 2015;Ayaz et al, 2016;Laurie et al, 2016). This is a more difficult task in the Main Karoo Basin as the ashfall tuff deposits are limited to the southern part of the basin.…”

Section: Correlationmentioning

confidence: 99%

Marine flooding surfaces recorded in Permian black shales and coal deposits of the Main Karoo Basin (South Africa): Implications for basin dynamics and cross-basin correlation

Götz

Ruckwied

Wheeler

2018

International Journal of Coal Geology

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“…The isotopic method embraces high-precision U-Pb chemical abrasionthermal ionization mass spectrometry (CA-TIMS) of zircons. It allows both the lithostratigraphy and the biostratigraphy to be well calibrated against the GTS (Metcalfe et al 2015;Ayaz et al 2016;Phillips et al 2018).…”

Section: Age Control and The Jurassic-cretaceous Boundarymentioning

confidence: 99%

“…To ensure the results were consistent with others from GA's Timescales Project (Metcalfe et al 2015;Laurie et al 2016;Ayaz et al 2016;Phillips et al 2018) the samples were sent first to R. Nicoll at GA in Canberra who selected which samples to send to J. Crowley at Boise State University for sample processing and analysis.…”

Section: Geochronological Sample Processing and Analysismentioning

confidence: 99%

Palynology of the Jurassic–Cretaceous transition, northern Surat Basin, Queensland, Australia

Cooling¹

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The terrestrially deposited Gubberamunda Sandstone and Orallo Formation of the Surat Basin represent the most complete Late Jurassic -Early Cretaceous sedimentary sequence in Queensland. This thesis presents the results of palynological and geochronological studies of these formations, and the underlying upper Westbourne Formation and overlying lower Mooga Sandstone. An improved understanding of the palynostratigraphy of this interval, presented here, will enable future workers to more accurately correlate and date strata both within and beyond the Surat Basin.Samples were taken for biostratigraphy and geochronology from three Geological Survey of Queensland (GSQ) stratigraphic boreholes located in the northern Surat Basin. These were GSQ DRD 26 in the west, GSQ Roma 2 in the center of the basin and GSQ Dalby 1 in the east. A systematic taxonomic survey of 89 biostratigraphic samples from the three boreholes revealed a diverse palynoflora from which 218 taxa were identified. These taxa included both in situ and reworked (latest Carboniferous -Early Jurassic) spores and pollen, as well as palynomorphs of algal, fungal, acritarch and unknown affinities. Of these, six are new: Dictyotosporites esterleae, Retitriletes thomsonii, Rugulatisporites johniorum, Camarozonosporites dorsus, Contignisporites confractus and Aratrisporites woodii. One new combination of Dictyotosporites rugulatus (Sajjadi & Playford) is proposed herein. Palynological samples from the upper Westbourne Formation and the lower Gubberamunda Sandstone yielded palynofloras here assigned to the Retitriletes watherooensis Association Zone, while those from the upper Gubberamunda Sandstone to the lower Mooga Sandstone were assigned to the Ruffordiaspora australiensis Interval Zone. Furthermore, Subzones APJ6.2.1, APJ6.2.2, APK1.1 and APK1.2.1 of Price (1997) are also herein formally described and recognized in the Surat Basin respectively as the Neoraistrickia equalis Interval Subzone, Foraminisporis dailyi Interval Subzone, Lower Ruffordiaspora australiensis Interval Subzone and Upper Ruffordiaspora australiensis Interval Subzone. Based on taxon ranges from this study and from Burger (1974), Subzone APK1.2.2 (Price, 1997) does not appear to be useful in the Surat Basin succession.The geochronological samples yielded two U-Pb Chemical Abrasion-Thermal Ionizations Mass Spectrometry (CA-TIMS) ages from the upper Orallo Formation of 134.38 ± 0.04 Ma (late Valanginian) from GSQ DRD 26 and of ≤132.46 ± 0.36 Ma (early Hauterivian) from GSQ Roma 2. On this basis, the Gubberamunda Sandstone is determined to be of Tithonian-Berriasian age and the Orallo Formation to be of (?)Berriasian/Valanginian-Hauterivian age. Accordingly, deposition of the Bungil Formation, which overlies the Mooga Sandstone, cannot have begun prior to the Hauterivian.Analysis of the sampled palynofloras shows that, during the Tithonian-Hauterivian, the Surat Basin flora remained relatively unchanging with no major floristic turnovers. This flora consisted of diverse ferns, conifers, lycopo...

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Age of the Yarrabee and accessory tuffs: implications for the upper Permian sediment-accumulation rates across the Bowen Basin

Abstract: Copies of Supplementary Papers may be obtained from the Geological Society of Australia's website (www.gsa.org.au), the Australian Journal of Earth Sciences website (www.ajes.com.au) or from the National Library of Australia's Pandora archive (http://nla.gov.au/nla.arc-25194).

Cited by 23 publications

References 19 publications

Refined Permian–Triassic floristic timeline reveals early collapse and delayed recovery of south polar terrestrial ecosystems

Refined Permian–Triassic floristic timeline reveals early collapse and delayed recovery of south polar terrestrial ecosystems

Marine flooding surfaces recorded in Permian black shales and coal deposits of the Main Karoo Basin (South Africa): Implications for basin dynamics and cross-basin correlation

Palynology of the Jurassic–Cretaceous transition, northern Surat Basin, Queensland, Australia

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