Insights into subtropical Australian aridity from Welsby Lagoon, north Stradbroke Island, over the past 80,000 years

Lewis, Richard J.; Tibby, John; Arnold, Lee J.; Barr, Cameron; Marshall, Jonathan; McGregor, Glenn B.; Gadd, Patricia; Yokoyama, Yūsuke

doi:10.1016/j.quascirev.2020.106262

Cited by 34 publications

(55 citation statements)

References 81 publications

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“…(For interpretation of the references to color in this figure legend, the reader is referred to the web version of this article.) wetland sediments (Kemp et al, 2020;Lewis et al, 2020). Geochemical variation driven by inorganic material deposition is further supported by the separate grouping of biogenic and lithogenic element proxies and ratios (Supplementary Fig.…”

Section: μXrf Elemental Scanning and Principal Component Analysismentioning

confidence: 72%

“…These elements provided accurate estimates of detrital and biochemical input based on their positions and grouping on the PC1 axis for Brown Lake (Supplementary Fig. S1) and other sites on North Stradbroke Island (e.g., Kemp et al, 2020;Lewis et al, 2020). Element count data were normalized by inc/ coh because this was found to correlate with measured LOI values (r 2 = 0.90; p-value <0.05) (Supplementary Fig.…”

Section: Core Correlationmentioning

confidence: 99%

“…Stradbroke Island wetland localities (e.g., Kemp et al, 2020;Lewis et al, 2020). The final D e values of these five samples (BL18-A, NSI18-1, NSI18-2, NSI18-3, and NSI18-6) have therefore been calculated using the central age model (CAM) (Galbraith et al, 1999).…”

Section: Lab Codementioning

confidence: 99%

“…209 ka [Kemp et al, 2020]; Welsby Lagoon = ca. 83 ka [Lewis et al, 2020]; and Brown Lake = ca. 60 ka) (Fig.…”

Section: Discusssion North Stradbroke Island Osl Dune Agesmentioning

confidence: 99%

“…The disparity in ages observed between parts of the BL18 and BL09 cores highlights the need to understand basin morphology, and the importance of developing robust age models before drawing inferences from paleoenvironmental proxies. Patterns of aeolian deposition in subtropical Australia through the last glacial and deglacial periods (Grant et al, 2014) (R.S.L.=relative sea level) along with the Brown Lake, Fern Gully Lagoon (Kemp et al, 2020), and Welsby Lagoon (Lewis et al, 2020) inorganic sediment accumulation records. The pink areas represent hiatus periods experienced at these wetlands.…”

Section: Brown Lake Bl09 and Bl18 Age Modelsmentioning

confidence: 99%

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Patterns of aeolian deposition in subtropical Australia through the last glacial and deglacial periods

et al. 2021

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Debate about the nature of climate and the magnitude of ecological change across Australia during the last glacial maximum (LGM; 26.5–19 ka) persists despite considerable research into the late Pleistocene. This is partly due to a lack of detailed paleoenvironmental records and reliable chronological frameworks. Geochemical and geochronological analyses of a 60 ka sedimentary record from Brown Lake, subtropical Queensland, are presented and considered in the context of climate-controlled environmental change. Optically stimulated luminescence dating of dune crests adjacent to prominent wetlands across North Stradbroke Island (Minjerribah) returned a mean age of 119.9 ± 10.6 ka; indicating relative dune stability soon after formation in Marine Isotope Stage 5. Synthesis of wetland sediment geochemistry across the island was used to identify dust accumulation and applied as an aridification proxy over the last glacial-interglacial cycle. A positive trend of dust deposition from ca. 50 ka was found with highest influx occurring leading into the LGM. Complexities of comparing sedimentary records and the need for robust age models are highlighted with local variation influencing the accumulation of exogenic material. An inter-site comparison suggests enhanced moisture stress regionally during the last glaciation and throughout the LGM, returning to a more positive moisture balance ca. 8 ka.

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Section: μXrf Elemental Scanning and Principal Component Analysismentioning

confidence: 72%

Section: Core Correlationmentioning

confidence: 99%

Section: Lab Codementioning

confidence: 99%

“…209 ka [Kemp et al, 2020]; Welsby Lagoon = ca. 83 ka [Lewis et al, 2020]; and Brown Lake = ca. 60 ka) (Fig.…”

Section: Discusssion North Stradbroke Island Osl Dune Agesmentioning

confidence: 99%

Section: Brown Lake Bl09 and Bl18 Age Modelsmentioning

confidence: 99%

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Patterns of aeolian deposition in subtropical Australia through the last glacial and deglacial periods

et al. 2021

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Climate, fire and vegetation history from subtropical North Stradbroke Island (Minjerribah), eastern Australia, during the last three interglacials

Kemp

Tibby

Barr

et al. 2021

J Quaternary Science

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Records of Australian palaeoclimate beyond the last glacial cycle are rare, limiting detailed analysis of long‐term climate trends and associated ecosystem responses. This study analyses a discontinuous pollen and charcoal record from Fern Gully Lagoon, North Stradbroke Island (Minjerribah), subtropical Queensland, Australia, which covers much of the last ~210 ,000 years. Climate variation is inferred from changes in vegetation, while analysis of micro‐ and macrocharcoal is used to infer fire activity. Pollen assemblages consist of ~40% rainforest taxa during marine isotope stage (MIS) 7a–c and early MIS 5. These are inferred to result from high rainfall in the Australian subtropics, which was also evident in north‐east and central Australia. Human impact from 21 ,000 years ago likely supressed post‐MIS 2 rainforest expansion to some extent. However, the increased Holocene abundance of herbs and grasses and reduced representation of aquatic taxa suggest that the Holocene was relatively dry when compared with early MIS 5 and MIS 7a–c. Similar MIS 5 and early MIS 7a–c climates, in contrast to a notably drier Holocene, suggest that the progressive interglacial drying trend most strongly recorded in central Australia was not a major feature of subtropical eastern Australian climates.

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San Quirce (Palencia, Spain): new chronologies for the Lower to Middle Palaeolithic transition of south‐west Europe

Bernal

Demuro

Arnold

et al. 2022

J Quaternary Science

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SanQuirce is an open-air archaeological site situated on a fluvial terrace in the Duero basin (Palencia, northern Iberia). This paper presents new and consistent chronologies obtained for the sedimentary sequence using post-infrared infrared stimulated luminescence (pIR-IR) dating of K-feldspars and single-grain thermally transferred optically stimulated luminescence (TT-OSL) dating of quartz. The new dating results indicate that the sequence is older than ~200 000 years and place San Quirce Level III within marine isotope stages (MIS) 8 and 7, between 274 ± 13 ka and 238 ± 13 ka. The main lithic assemblage at San Quirce comes from Level III. The predominant tool types found in this level are hammerstones, manuports and flakes, with a small proportion of cores and a significant presence of denticulates. Adaptation to local environmental conditions resulted in distinctive cultural habits, which were embedded in the cultural tradition of hominins occupying the site during the final third of the Middle Pleistocene. San Quirce preserves a simple cultural tradition that was employed by local hominins to engage in a diverse array of activities, and highlights the cultural diversity that appears to have been a characteristic feature of the Lower to Middle Palaeolithic transition 300-200 ka.

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Insights into subtropical Australian aridity from Welsby Lagoon, north Stradbroke Island, over the past 80,000 years

Cited by 34 publications

References 81 publications

Patterns of aeolian deposition in subtropical Australia through the last glacial and deglacial periods

Patterns of aeolian deposition in subtropical Australia through the last glacial and deglacial periods

Climate, fire and vegetation history from subtropical North Stradbroke Island (Minjerribah), eastern Australia, during the last three interglacials

San Quirce (Palencia, Spain): new chronologies for the Lower to Middle Palaeolithic transition of south‐west Europe

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