234U/238U signatures associated with uranium ore bodies: part 2 Manyingee

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dc.contributor.authorLowson, RTen_AU
dc.contributor.authorMclntyre, MGen_AU
dc.date.accessioned2014-06-19T00:45:54Zen_AU
dc.date.available2014-06-19T00:45:54Zen_AU
dc.date.issued2013-04-01en_AU
dc.date.statistics2014-05-19en_AU
dc.description.abstractThe Manyingee ore body is a roll-front U ore body located at depth in the Cretaceous sandstone sediments of a Proterozoic palaeo valley. It is located in a confined aquifer. The aquifer is recharged 4 km upstream by the Ashburton River. Groundwater samples were collected at and up to 4.7 km downstream of the ore body. The ground water U-234/U-238 activity ratios (AR) were elevated to 1.86 in the vicinity of the ore body and then declined to 1.06 over the 4.7 km transect. The elevated U-234/U-238 ARs are attributed to selective leaching of U-234 sites by oxidising waters, with a recoil as a necessary precursor to produce activated U-234 sites. Direct ejection into another phase following a recoil is considered to be a minor contributor to U-234 U-238 disequilibrium in this environment. The profile is considered to be typical of the U-234/U-238 AR profile at and down gradient of the redox front of a U ore body. © 2013, Elsevier Ltd.en_AU
dc.identifier.citationLowson, R. T., & McIntyre, M. G. (2013). 234U/238U signatures associated with uranium ore bodies: part 2 Manyingee. Journal of Environmental Radioactivity, 118, 157-162. doi:10.1016/j.jenvrad.2012.10.006en_AU
dc.identifier.govdoc4682en_AU
dc.identifier.issn0265-931Xen_AU
dc.identifier.journaltitleJournal of Environmental Radioactivityen_AU
dc.identifier.pagination157-162en_AU
dc.identifier.urihttp://dx.doi.org/10.1016/j.jenvrad.2012.10.006en_AU
dc.identifier.urihttp://apo.ansto.gov.au/dspace/handle/10238/5697en_AU
dc.identifier.volume118en_AU
dc.language.isoenen_AU
dc.publisherElsevier Science Ltden_AU
dc.subjectOresen_AU
dc.subjectUranium oresen_AU
dc.subjectUraniumen_AU
dc.subjectGround wateren_AU
dc.subjectMineralsen_AU
dc.subjectSandstonesen_AU
dc.title234U/238U signatures associated with uranium ore bodies: part 2 Manyingeeen_AU
dc.typeJournal Articleen_AU
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