Glacial and deglacial climatic patterns in Australia and surrounding regions from 35 000 to 10 000 years ago reconstructed from terrestrial and near-shore proxy data

Williams, Martin; Cook, Ellyn J.; Kaars, Sander van der; Barrows, Timothy T.; Shulmeister, James; Kershaw, Peter

doi:10.1016/j.quascirev.2009.04.020

Cited by 146 publications

(112 citation statements)

References 153 publications

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“…The paradox of flooding in the northern basins simultaneously with clay dune building involving massive transfer of dust and salt to the east raises important questions on the nature of glacial age aridity (Williams et al 2001(Williams et al , 2009). While evidence of locally permanent water bodies is secure, the Willandra also registers regional evidence for simultaneous aridity.…”

Section: Aridity Paradox: Lakes V Desert Dunesmentioning

confidence: 99%

Wind v water: Glacial maximum records from the Willandra Lakes

Bowler¹,

Gillespie²,

Johnston³

et al. 2012

Peopled Landscapes: Archaeological and Biogeographic Approaches to Landscapes

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Section: Aridity Paradox: Lakes V Desert Dunesmentioning

confidence: 99%

Wind v water: Glacial maximum records from the Willandra Lakes

Bowler¹,

Gillespie²,

Johnston³

et al. 2012

Peopled Landscapes: Archaeological and Biogeographic Approaches to Landscapes

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“…Most evidence for the YD has been found in the North Atlantic region and adjacent locations under its influence, giving raise to the hypothesis that the YD may not be a global phenomenon (Bennett et al, 2000). The lack of YD cooling and drying signals at some locations in southern South America and Australasia, on both sides of the Pacific Ocean, seems to support this view (Bennett et al, 2000;Rodbell, 2000;Barrows et al, 2007;Williams et al, 2009).…”

Section: Introductionmentioning

confidence: 99%

Vegetation changes in the Neotropical Gran Sabana (Venezuela) around the Younger Dryas chron

Montoya

Rull

Stansell

et al. 2011

J Quaternary Science

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The occurrence of the Younger Dryas cold reversal in northern South America midlands and lowlands remains controversial. We present a palaeoecological analysis of a Late Glacial lacustrine section from a midland lake (Lake Chonita, 4.6501 8N, 61.0157 8W, 884 m elevation) located in the Venezuelan Gran Sabana, based on physical and biological proxies. The sediments were mostly barren from $15.3 to 12.7 k cal a BP, probably due to poor preservation. A ligneous community with no clear modern analogues was dominant from 12.7 to 11.7 k cal a BP (Younger Dryas chronozone). At present, similar shrublands are situated around 200 m elevation above the lake, suggesting a cooling-driven downward shift in vegetation during that period. The interval from 11.7 to 10.6 k cal a BP is marked by a dramatic replacement of the shrubland by savannas and a conspicuous increase in fire incidence. The intensification of local and regional fires at this interval could have played a role in the vegetation shift. A change to wetter, and probably warmer, conditions is deduced after 11.7 k cal a BP, coinciding with the early Holocene warming. These results support the hypothesis of a mixed origin (climate and fire) of the Gran Sabana savannas, and highlight the climatic instability of the Neotropics during the Late Glacial.

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“…However, little is currently known about the impact of Heinrich stadials on Australian climate, and the Southern Hemisphere mid-latitudes in general, as reliable terrestrial paleoclimate records from this region are sparse (Broecker and Putnam, 2012). The latitudinal position of the westerly winds at the Last Glacial Maximum (LGM) is also an important research question which still remains debated despite long-running attention, both specifically in the southern Australian sector (Bowler, 1978;Bowler and Wasson, 1984;Wywroll et al, 2000;Shulmeister et al, 2004Shulmeister et al, , 2016Williams et al, 2009;Hesse et al, 2004;Turney et al, 2006;Haberlah et al, 2010;Cohen et al, 2011;De Deckker et al, 2012) and elsewhere in the Southern Hemisphere (Gasse et al, 2008;Kohfeld et al, 2013;Sime et al, 2013).…”

Section: Introductionmentioning

confidence: 99%

Hydroclimate of the Last Glacial Maximum and deglaciation in southern Australia's arid margin interpreted from speleothem records (23–15 ka)

et al. 2017

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Abstract. Terrestrial data spanning the Last Glacial Maximum (LGM) and deglaciation from the southern Australian region are sparse and limited to discontinuous sedimentological and geomorphological records with relatively large chronological uncertainties. This dearth of records has hindered a critical assessment of the role of the Southern Hemisphere mid-latitude westerly winds on the region's climate during this time period. In this study, two precisely dated speleothem records for Mairs Cave, Flinders Ranges, are presented, providing for the first time a detailed terrestrial hydroclimatic record for the southern Australian drylands during 23-15 ka. Recharge to Mairs Cave is interpreted from the speleothem record by the activation of growth, physical flood layering, and δ 18 O and δ 13 C minima. Periods of lowered recharge are indicated by 18 O and 13 C enrichment, primarily affecting δ 18 O, argued to be driven by evaporation of shallow soil/epikarst water in this water-limited environment. A hydrological driver is supported by calcite fabric changes. These include the presence of laminae, visible organic colloids, and occasional dissolution features, related to recharge, as well as the presence of sediment bands representing cave floor flooding. A shift to slower-growing, more compact calcite and an absence of lamination is interpreted to represent reduced recharge.

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Glacial and deglacial climatic patterns in Australia and surrounding regions from 35 000 to 10 000 years ago reconstructed from terrestrial and near-shore proxy data

Cited by 146 publications

References 153 publications

Wind v water: Glacial maximum records from the Willandra Lakes

Wind v water: Glacial maximum records from the Willandra Lakes

Vegetation changes in the Neotropical Gran Sabana (Venezuela) around the Younger Dryas chron

Hydroclimate of the Last Glacial Maximum and deglaciation in southern Australia's arid margin interpreted from speleothem records (23–15 ka)

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Glacial and deglacial climatic patterns in Australia and surrounding regions from 35 000 to 10 000 years ago reconstructed from terrestrial and near-shore proxy data

Cited by 146 publications

References 153 publications

Wind v water: Glacial maximum records from the Willandra Lakes

Wind v water: Glacial maximum records from the Willandra Lakes

Vegetation changes in the Neotropical Gran Sabana (Venezuela) around the Younger Dryas chron

Hydroclimate of the Last Glacial Maximum and deglaciation in southern Australia's arid margin interpreted from speleothem records (23–15 ka)

Contact Info

Product

Resources

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Hydroclimate of the Last Glacial Maximum and deglaciation in southern Australia's arid margin interpreted from speleothem records (23–15 ka)