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500 ka precipitation record from southeastern Australia; evidence for interglacial relative aridity

Linda K. Ayliffe, Pyramo C. Marianelli, Kevin C. Moriarty, Rod T. Wells, Malcolm T. McCulloch, Graham E. Mortimer and John C. Hellstrom
500 ka precipitation record from southeastern Australia; evidence for interglacial relative aridity
Geology (Boulder) (February 1998) 26 (2): 147-150

Abstract

(super 230) Th/ (super 234) U dating of speleothems from southeastern Australia documents changes in effective precipitation over the past 500 k.y. at a temporal resolution not previously achieved. Results show that the highest effective precipitation for the southeastern interior of Australia occurred during stadials and cool interstadials of the past four glacial cycles. Interglacials and warm interstadials, as well as glacial maxima, are comparatively arid. We suggest that lower regional temperatures over the continent and changes in atmospheric circulation (stronger Walker circulation) produced the observed periods of increased effective precipitation.


ISSN: 0091-7613
EISSN: 1943-2682
Coden: GLGYBA
Serial Title: Geology (Boulder)
Serial Volume: 26
Serial Issue: 2
Title: 500 ka precipitation record from southeastern Australia; evidence for interglacial relative aridity
Affiliation: Australian National University, Research School of Earth Sciences, Canberra, Australia
Pages: 147-150
Published: 199802
Text Language: English
Publisher: Geological Society of America (GSA), Boulder, CO, United States
References: 41
Accession Number: 1998-022955
Categories: Quaternary geologyGeochronology
Document Type: Serial
Bibliographic Level: Analytic
Annotation: With GSA Data Repository Item 9815
Illustration Description: illus. incl. 1 table, sketch map
S37°00'00" - S37°00'00", E140°30'00" - E141°00'00"
Secondary Affiliation: Flinders University of South Australia, Bedford Park, South Aust., AUS, Australia
Country of Publication: United States
Secondary Affiliation: GeoRef, Copyright 2017, American Geosciences Institute. Reference includes data supplied by the Geological Society of America, Boulder, CO, United States
Update Code: 199809
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