"Variations in uranium isotope compositions are well documented in groundwaters and uranium ores. This is due to the different geochemical and radiogenic behaviours of uranium nuclides during water-rock interactions, and a result of neutron capture processes. These variations are particularly evident within sandstone-hosted uranium deposits which are formed by the low temperature reduction of U(VI) to U(IV). This thesis investigates the behaviour of uranium nuclides during ore formation processes using U and Th concentrations, U-series isotopic ratios (including (234U/238U), (230Th/232Th), (238U/232Th) and (230Th/238U) activity ratios, 238U/235U ratios and 236U/238U ratios from a suite of groundwaters and mineralised sediments in the vicinity of several South Australian sandstone-hosted uranium deposits." -- Abstract.
Alternative TitleApplications of U-series disequilibria and 236U isotopes
Table of ContentsChapter I. Thesis introduction -- Chapter II. U-series disequilibria in groundwaters in a low temperature redox uranium mineralised system -- Chapter III. Fractionation of 238U/235U by reduction during low temperature uranium mineralisation processes -- Chapter IV. Detection of natural 236U in groundwaters and ores in the vicinity of several high-grade sandstone-hosted uranium deposits -- Chapter V. U-series disequilibria in the Beverley sandstone-hosted uranium deposit (South Australia): evidence for recent uranium mobilisation -- Chapter VI. Synthesis and directions for future research -- Appendices: supplementary material.
NotesA thesis submitted in fulfilment of the requirements for the degree of Doctor of Philosophy in the Faculty of Science, Macquarie University".
Includes bibliographical references
Awarding InstitutionMacquarie University
Degree TypeThesis PhD
DegreePhD, Department of Earth and Planetary Sciences, Faculty of Science, Macquarie University, Australia
Department, Centre or SchoolDepartment of Earth and Planetary Sciences
Year of Award2013
Principal SupervisorSimon Turner
Additional Supervisor 1Bruce Schaefer
RightsCopyright Melissa Murphy 2013.
Copyright disclaimer: http://mq.edu.au/library/copyright
Extent1 online resource (xiii, 215 pages) illustrations (coloured)