Abstract
Geochemical characterisation of east Australian dusts: A tool for provenance of aeolian sediments from geological archives
Joint BGRG/BSRG Conference: Drylands - Linking Landscape Processes To Sedimentary Environments, 2005 (London, United Kingdom, 02-Feb-2005–04-Feb-2005)
2005
Abstract
On 7 February 2000 an atypical orange discolouration of snowfields in the central Southern Alps, New Zealand occurred following the passage of a cold front. Analysis of snow samples identified fine orangey-brown dust mixed with much coarser grey dust. Air parcel forward trajectories from dust sources in southern and central Australia, where dust storms were reported on 4 February 2000, were computed to identify the deposits source. Geochemical analyses of the dust deposit using 26 trace elements, unaffected by regional air pollution and gravitational sorting, indicate that 20% of the dust was sourced from western New South Wales, with 45% from the eastern Eyre Peninsula of South Australia and the remaining 35% was local New Zealand dust. This provenancing approach provides a spatial resolution of long travelled dust sourcing not previously achieved.
Details
- Title
- Geochemical characterisation of east Australian dusts: A tool for provenance of aeolian sediments from geological archives
- Authors
- H A McGowan (Author) - University of QueenslandB S Kamber (Author) - Laurentian UniversitySamuel K Marx (Author) - University of Queensland
- Conference details
- Joint BGRG/BSRG Conference: Drylands - Linking Landscape Processes To Sedimentary Environments, 2005 (London, United Kingdom, 02-Feb-2005–04-Feb-2005)
- Publisher
- British Society for Geomorphology
- Date published
- 2005
- Organisation Unit
- University of the Sunshine Coast, Queensland
- Language
- English
- Record Identifier
- 99449906202621
- Output Type
- Abstract
Metrics
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