Cosmogenic radionuclide chronology of pre-last glacial cycle moraines in the Western Arthur range, Southwest Tasmania

Kiernan, K; Fink, David; Greig, David; Mifud, Charles

doi:10.1016/j.quascirev.2010.07.023

Cited by 18 publications

(11 citation statements)

References 42 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Vegetation records indicate the further expansion of sclerophyll woodland taxa and rainforest at the commencement of the Holocene, indicating increased temperatures and/or increased effective precipitation (Dodson and Wright, 1989;Williams et al, 2006;Kershaw et al, 2007;Kiernan et al, 2010;Moss et al, this issue). A decrease in SWW flow across the southern temperate zones between 11-8 ka is indicated by a decrease in moisture in areas where precipitation is positively correlated with SWW wind-speed in the modern climate, with a reversal of this trend occurring between 8-6 ka (Fletcher and Moreno 2012).…”

Section: Discussionmentioning

confidence: 99%

See 1 more Smart Citation

Climatic records over the past 30 ka from temperate Australia – a synthesis from the Oz-INTIMATE workgroup

Petherick

Bostock

Cohen

et al. 2013

Quaternary Science Reviews

118

122

View full text Add to dashboard Cite

Dosseto, A. (2013). Climatic records over the past 30 ka from temperate Australia -a synthesis from the Oz-INTIMATE workgroup. Quaternary Science Reviews, 74 58-77.Climatic records over the past 30 ka from temperate Australia -a synthesis from the Oz-INTIMATE workgroup AbstractTemperate Australia sits between the heat engine of the tropics and the cold Southern Ocean, encompassing a range of rainfall regimes and falling under the influence of different climatic drivers. Despite this heterogeneity, broad-scale trends in climatic and environmental change are evident over the past 30 ka. During the early glacial period (∼30-22 ka) and the Last Glacial Maximum (∼22-18 ka), climate was relatively cool across the entire temperate zone and there was an expansion of grasslands and increased fluvial activity in regionally important Murray-Darling Basin. The temperate region at this time appears to be dominated by expanded sea ice in the Southern Ocean forcing a northerly shift in the position of the oceanic fronts and a concomitant influx of cold water along the southeast (including Tasmania) and southwest Australian coasts. The deglacial period (∼18-12 ka) was characterised by glacial recession and eventual disappearance resulting from an increase in temperature deduced from terrestrial records, while there is some evidence for climatic reversals (e.g. the Antarctic Cold Reversal) in high resolution marine sediment cores through this period. The high spatial density of Holocene terrestrial records reveals an overall expansion of sclerophyll woodland and rainforest taxa across the temperate region after ∼12 ka, presumably in response to increasing temperature, while hydrological records reveal spatially heterogeneous hydro-climatic trends. Patterns after ∼6 ka suggest higher frequency climatic variability that possibly reflects the onset of large scale climate variability caused by the El Niño/Southern Oscillation. Petherick, L., Bostock, H., Cohen, T. J., Fitzsimmons, K., Tibby, J., Fletcher, M. -S., Moss, P., Reeves, J., Mooney, S., Barrows, T., Kemp, J., Jansen, J., Nanson, G. & Dosseto, A. (2013). Climatic records over the past 30 ka from temperate Australia -a synthesis from the Oz-INTIMATE workgroup. Quaternary Science Reviews, 74 58-77. Australian coasts. The deglacial period (~18-12 ka) was characterised by glacial recession and eventual disappearance resulting from an increase in temperature deduced from terrestrial records, while there is some evidence for climatic reversals (e.g. the Antarctic Cold Reversal) in high resolution marine sediment cores through this period. The high spatial density of Holocene terrestrial records reveals an overall expansion of sclerophyll woodland and rainforest taxa across the temperate region after ~12 ka, presumably in response to increasing temperature, while hydrological records reveal spatially heterogeneous hydro-climatic trends. Patterns after ~6 ka suggest higher frequency climatic variability that possibly reflects the onset of large scale climate variability caused by...

show abstract

Section: Discussionmentioning

confidence: 99%

“…More recently, exposure dating of glacial deposits has provided direct ages for moraines. Exposure dating is especially useful for directly dating inorganic glacial and periglacial material (Barrows et al, 2001;Barrows et al, 2002;Barrows et al, 2004 Mackintosh et al (2006) and Kiernan et al (2010).…”

Section: Glacial Depositsmentioning

confidence: 99%

Climatic records over the past 30 ka from temperate Australia – a synthesis from the Oz-INTIMATE workgroup

Petherick

Bostock

Cohen

et al. 2013

Quaternary Science Reviews

118

122

View full text Add to dashboard Cite

show abstract

“…Elsewhere in the Southern Hemisphere, the large moraines occurring at the mouths of valleys and cirque basins in western Tasmania were thought to have marked the last glaciation (MIS 2) limits, such as in the West Coast Range (Lewis, 1945; Colhoun, 1985). However, recent exposure dating has demonstrated that this is incorrect and that some of these moraines were formed during the Middle Pleistocene (Barrows et al, 2002; Kiernan et al, 2010). In their review, Colhoun and Barrows (2011, p. 1042) stated that the Hamilton Moraine, west of Lake Margaret, formed during MIS 8.…”

Section: The “Missing Glaciations”mentioning

confidence: 99%

“…In the Southern Hemisphere there is little evidence in the glacial record of MIS 10 glaciation. However, in the western Arthur Range of southwestern Tasmania, cosmogenic exposure dating suggests that moraines were formed by glaciations in MIS 6 and 10 but not in MIS 8 (Kiernan et al, 2010). The authors do acknowledge that the MIS 10 age may be an overestimate if the erosion rates are too high, and in that case, the moraines would be MIS 8 in age.…”

Section: Mis 10 (Early Saalian and Equivalents)mentioning

confidence: 99%

The “missing glaciations” of the Middle Pleistocene

2020

View full text Add to dashboard Cite

Global glaciations have varied in size and magnitude since the Early–Middle Pleistocene transition (~773 ka), despite the apparent regular and high-amplitude 100 ka pacing of glacial–interglacial cycles recorded in marine isotope records. The evidence on land indicates that patterns of glaciation varied dramatically between different glacial–interglacial cycles. For example, Marine Isotope Stages (MIS) 8, 10, and 14 are all noticeably absent from many terrestrial glacial records in North America and Europe. However, globally, the patterns are more complicated, with major glaciations recorded in MIS 8 in Asia and in parts of the Southern Hemisphere, such as Patagonia, for example. This spatial variability in glaciation between glacial–interglacial cycles is likely to be driven by ice volume changes in the West Antarctic Ice Sheet and associated interhemispheric connections through ocean–atmosphere circulatory changes. The weak global glacial imprint in some glacial–interglacial cycles is related to the pattern of global ice buildup. This is caused by feedback mechanisms within glacial systems themselves that partly result from long-term orbital changes driven by eccentricity.

show abstract

“…2002; Kiernan et al . 2010, 2014; Augustinus et al . 2017), in each of these studies results have been obtained from at most a couple of sites.…”

Section: Figmentioning

confidence: 99%

A rapid sediment pulse induced by glacial melting during the MIS 8/7e transition buried well‐developed karst in the Railton Valley, Tasmania, Australia

Slee

McIntosh

Woodward

et al. 2021

Boreas

View full text Add to dashboard Cite

Recent catastrophic sinkhole collapse caused by regional water table lowering induced by quarrying has led to the partial exhumation and reactivation of a buried karst cave system in the floor of the Railton Valley in the lowlands of northern Tasmania, Australia, and widespread sinkhole development. Extensive silty sediments exposed in sinkholes, OSL dated to approximately 237 ka, are interpreted to be lacustrine deposits derived from rapidly deposited glacial outwash. The silty sediments have mineralogy consistent with derivation from a source in the upper Mersey catchment rather than locally and are interpreted to be the product of rapid melting of the Mersey Valley glacier during the MIS 8/7e transition. Thick Last Glacial alluvial fan and Holocene flood‐plain deposits mantle the lacustrine sediments. Exposures of glacial erratics and weathered till in streambeds provide further evidence that the valley was impacted by earlier Pleistocene glaciations.

show abstract

Cosmogenic radionuclide chronology of pre-last glacial cycle moraines in the Western Arthur range, Southwest Tasmania

Cited by 18 publications

References 42 publications

Climatic records over the past 30 ka from temperate Australia – a synthesis from the Oz-INTIMATE workgroup

Climatic records over the past 30 ka from temperate Australia – a synthesis from the Oz-INTIMATE workgroup

The “missing glaciations” of the Middle Pleistocene

A rapid sediment pulse induced by glacial melting during the MIS 8/7e transition buried well‐developed karst in the Railton Valley, Tasmania, Australia

Contact Info

Product

Resources

About