Hydrochemical variations of groundwater and spring discharge of the western Great Artesian Basin

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dc.contributor.authorPriestley, SCen_AU
dc.contributor.authorShand, Pen_AU
dc.contributor.authorLove, AJen_AU
dc.contributor.authorCrossey, LJen_AU
dc.contributor.authorKarlstrom, KEen_AU
dc.contributor.authorKeppel, MNen_AU
dc.contributor.authorWohling, DLen_AU
dc.contributor.authorRousseau-Guetin, Pen_AU
dc.date.accessioned2021-08-30T06:46:49Zen_AU
dc.date.available2021-08-30T06:46:49Zen_AU
dc.date.issued2019-11-25en_AU
dc.date.statistics2021-08-16en_AU
dc.description.abstractObjectives: The chemical variations of groundwater provide important clues to the geochemical processes responsible for water quality and evolution across the western GAB. The objective of this study was to examine the hydrochemical variations of groundwater and spring discharge along the entire western GAB expanding on several key results from a 4-year project studying the hydrochemistry of the western GAB presented in Love et al. (2013) and Love et al. (2013). Design and Methodology: The dataset comprises data collected during the Allocating Water and Maintaining Springs in the Great Artesian Basin project funded by the National Water Commission (Love, et al., 2013, Love, et al., 2013), with additional data from a government database, as well as, a number of published government reports and journal articles. Electrical balances and comparison of monitoring and duplicate data was undertaken to ensure the collated data were representative and accurate. Original data and results: The regional hydrochemical trends generally support the modern interpreted flow paths, indicating that these generally represent the long-term flow paths. However, the chemical variations along the flow paths in the western GAB are complex with their composition being a function of several controlling processes, including recharge location, evapotranspiration and water-rock interactions. These processes being spatially variable cause groundwaters to be generally of Na-HCO3 type east of Lake Eyre and Na-Cl-(-SO4) type when originating from the western margin. Springs within the western GAB springs appear to be discharging water predominantly from the main GAB aquifer. However, springs on the Peake and Denison Inlier are either completely or partially fractured rock source and there are several springs discharging water with a component from a source other than the main GAB aquifer. Conclusion: The source, evolution and several key geochemical processes responsible for water quality were identified through this study. However, work is still needed to fully characterise all water-rock interactions and geochemical processes occurring within the main GAB aquifer. © The Authorsen_AU
dc.identifier.citationPriestley, S. C., Shand, P., Love, A. J., Crossey, L. J. Karlstrom, K. E., Keppel, M. N., Wohling, D. L. & Rousseau-Guetin, P. (2019). Hydrochemical variation of groundwater and spring discharge of the western Great Artesian Basin. Paper presented to the Australasian Groundwater Conference, "Groundwater in a Changing World", 24 - 27 November 2019, Brisbane Convention and Exhibition Centre, Queensland. Retrieved from: http://www.groundwater.com.au/documents/agc2019-book-of-abstracts-updated.pdfen_AU
dc.identifier.conferenceenddate27 November 2019en_AU
dc.identifier.conferencenameAustralasian Groundwater Conference, 'Groundwater in a Changing World'en_AU
dc.identifier.conferenceplaceBrisbane, Australiaen_AU
dc.identifier.conferencestartdate24 November 2019en_AU
dc.identifier.isbn978-1-925562-35-4en_AU
dc.identifier.urihttp://www.groundwater.com.au/documents/agc2019-book-of-abstracts-updated.pdfen_AU
dc.identifier.urihttps://apo.ansto.gov.au/dspace/handle/10238/11553en_AU
dc.language.isoenen_AU
dc.publisherNational Centre for Groundwater Research And Training, & Australian Chapter International Association Of Hydrogeologistsen_AU
dc.subjectGround wateren_AU
dc.subjectAquifersen_AU
dc.subjectWater chemistryen_AU
dc.subjectSpringsen_AU
dc.subjectSedimentary basinsen_AU
dc.subjectLakesen_AU
dc.subjectWateren_AU
dc.subjectChemistryen_AU
dc.titleHydrochemical variations of groundwater and spring discharge of the western Great Artesian Basinen_AU
dc.typeConference Abstracten_AU
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