Regional-scale investigation of the spatial distribution and origin of soluble salts in central north Queensland

Bui, E. N. and Moran, C. J. (2000) Regional-scale investigation of the spatial distribution and origin of soluble salts in central north Queensland. Hydrological Processes, 14 2: 237-250. doi:10.1002/(SICI)1099-1085(20000215)14:2<237::AID-HYP922>3.0.CO;2-E


Author Bui, E. N.
Moran, C. J.
Title Regional-scale investigation of the spatial distribution and origin of soluble salts in central north Queensland
Journal name Hydrological Processes   Check publisher's open access policy
ISSN 0885-6087
Publication date 2000
Sub-type Article (original research)
DOI 10.1002/(SICI)1099-1085(20000215)14:2<237::AID-HYP922>3.0.CO;2-E
Volume 14
Issue 2
Start page 237
End page 250
Total pages 14
Place of publication United Kingdom
Publisher John Wiley & Sons
Language eng
Abstract A method for regional assessment of the distribution of saline outbreaks is demonstrated for a large area (68 000 km(2)) in north Queensland, Australia. Soil samples were used in conjunction with a digital elevation model and a map of potentially saline discharge zones to examine the landscape distribution of soluble salts in the region. The hypothesis of atmospheric accession of salt was tested for the topographically defined catchment regions feeding into each potentially saline discharge area. Most catchments showed a salt distribution consistent with this hypothesis, i.e. %TSS was large near the discharge areas and decreased rapidly with distance uphill from the discharge areas. In some catchments, however, local saline outbreaks were apparent at significant distances uphill from discharge areas. The possibility of geological sources of this salt was examined by comparing random point distributions with the location of saline points with distance downhill from geological units (excluding points near discharge zones). The distribution of some saline outbreaks was consistent with the occurrence of Cambro-Ordovician metasediments, Devonian limestone, Upper Devonian-Lower Carboniferous volcanics, and Triassic sediments. Copyright (C) 2000 John Wiley & Sons, Ltd.
Keyword Water Resources
Regional-scale
Salinity
Spatial Statistical Analysis
Sparse Point Sampling
Windsor Subprovince
Q-Index Code C1
Q-Index Status Provisional Code
Institutional Status Unknown

Document type: Journal Article
Sub-type: Article (original research)
Collection: Sustainable Minerals Institute Publications
 
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Created: Mon, 13 Aug 2007, 11:41:33 EST