The 210Pb chronology of late holocene deposition in an Eastern Australian Lake basin

Gale, Stephen; Haworth, Robert; Pisanu, Philip

doi:10.1016/0277-3791(95)00033-x

Cited by 41 publications

(38 citation statements)

References 26 publications

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“…Furthermore, the site has been identified as a location of exceptional soil erosion since European settlement (Gale et al, 1995;Gale and Haworth, 2005), although this has recently been chal-lenged (Woodward et al, 2011). The site has more recently become a focus for work due to inferred changes to basin hydrology in response to tree clearance during European settlement of the New England Tablelands (Woodward et al, 2014a).…”

Section: Introductionmentioning

confidence: 99%

Constant wind regimes during the Last Glacial Maximum and early Holocene: evidence from Little Llangothlin Lagoon, New England Tablelands, eastern Australia

et al. 2016

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Abstract.Here we present the results of a multi-proxy investigation -integrating geomorphology, ground-penetrating radar, and luminescence dating -of a high-elevation lunette and beach berm in northern New South Wales, eastern Australia. The lunette occurs on the eastern shore of Little Llangothlin Lagoon and provides evidence for a lake high stand combined with persistent westerly winds at the Last Glacial Maximum (LGM -centring on 21.5 ka) and during the early Holocene (ca. 9 and 6 ka). The reconstructed atmospheric circulation is similar to the present-day conditions, and we infer no significant changes in circulation at those times, as compared to the present day. Our results suggest that the Southern Hemisphere westerlies were minimally displaced in this sector of Australasia during the latter part of the last ice age. Our observations also support evidence for a more positive water balance at the LGM and early Holocene in this part of the Australian sub-tropics.

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Section: Introductionmentioning

confidence: 99%

Constant wind regimes during the Last Glacial Maximum and early Holocene: evidence from Little Llangothlin Lagoon, New England Tablelands, eastern Australia

et al. 2016

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“…Measurement of ratio 210 Po and 209 Po activity will provide an adequate figure of supported 210 Pb, as these two elements are assumed to be in equilibrium [15] . Subtracting of supported 210 Pb from total 210 Pb will determine unsupported 210 Pb.…”

Section: Discussionmentioning

confidence: 99%

Recent Sedimentation Rate and Sediment Ages Determination of Kemaman-Chukai Mangrove Forest, Terengganu, Malaysia

Kamaruzzaman¹,

Ong²

2008

American J. of Agricultural and Biological Sciences

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Two 20 cm sediment cores were collected with a D-section corer in the Kemaman-Chukai mangrove forest and analyzed for 210 Pb ex (excess 210 Pb) in order to understand the sedimentation pattern. The activities of 210 Pb along with the 208 Po tracer were measured by Alpha Spectrometry on a silicon surface barrier detector connected to a multi channel analyzer. Sedimentation rates were determined applying 210 Pb dating method and found to vary between 0.94-1.11 cm year −1 . The highest accumulation rates were recorded near the river mouth and the lowest rates at the downstream.Assuming that the sedimentation rate values are accurate, this implies that the sediments in the upper 100 cm at Kemaman-Chukai mangrove forest were deposited during the past 90 years ago.

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“…The most commonly used method of validation is the use of 137 Cs, although in many cases, this proves to be inadequate due to downward diffusion or remobilisation of 137 Cs by post-depositional activity within pore waters (Appleby 2001;Laissaoui et al 2008;Putyrskaya and Klemt 2007). Alternative methods for validation include pollen, diatom, sediment geochemistry, historical records of catchment development and major climatic events (Appleby 2001;Kilby and Batley 1993;Gale et al 1995;Haworth et al 1999).…”

Section: Interpretation Of Isotope Datingmentioning

confidence: 98%

A novel method using sedimentary metals and GIS for measuring anthropogenic change in coastal lake environments

Olmos

Birch

2009

Environ Sci Pollut Res

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Surficial metal concentrations were highest in the 1975 sediment than in the 2003 samples, with the northern part of Lake Macquarie having much greater metal concentrations than the rest of the lake. Past and future declining sedimentary metal concentrations in the northern part of the lake were expected due to the closure of a nearby Pb-Zn smelter; however, possible increases in Cu in the south of the lake to the year 2020 were surprising. The new method presented in this study can assist estuary managers by providing data on past, present and future conditions, which are essential in making informed decisions for the improvement of estuarine systems.

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The 210Pb chronology of late holocene deposition in an Eastern Australian Lake basin

Cited by 41 publications

References 26 publications

Constant wind regimes during the Last Glacial Maximum and early Holocene: evidence from Little Llangothlin Lagoon, New England Tablelands, eastern Australia

Constant wind regimes during the Last Glacial Maximum and early Holocene: evidence from Little Llangothlin Lagoon, New England Tablelands, eastern Australia

Recent Sedimentation Rate and Sediment Ages Determination of Kemaman-Chukai Mangrove Forest, Terengganu, Malaysia

A novel method using sedimentary metals and GIS for measuring anthropogenic change in coastal lake environments

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