Uranium in the environment: a characterization and comparison of uranium mobility in ancient and modern sediments
| dc.contributor.author | Bergen, Laura | |
| dc.contributor.examiningcommittee | Sherriff, Barbara (Geological Sciences) Schreckenbach, Georg (Chemistry) | en_US |
| dc.contributor.supervisor | Fayek, Mostafa (Geological Sciences) | en_US |
| dc.date.accessioned | 2013-01-09T17:30:38Z | |
| dc.date.available | 2013-01-09T17:30:38Z | |
| dc.date.issued | 2012 | en_US |
| dc.degree.discipline | Geological Sciences | en_US |
| dc.degree.level | Master of Science (M.Sc.) | en_US |
| dc.description.abstract | The behavior of U in near surface sedimentary environments has changed throughout geologic time. There is a marked shift in U (IV) mineral stability and deposit style at approximately 2200 Ma due to changes in the concentration of O in the atmosphere. For example, prior to 2200 Ma, fluvial U deposits could form and U(IV) were stable in surface and near-surface environments. In modern, anthropogenic sedimentary systems such as U tailings, U (IV) minerals are not stable and readily oxidize to U (VI) minerals. In addition, U is much more mobile in modern sediments relative sediments that were deposited prior to 2200 Ma. | en_US |
| dc.description.note | February 2013 | en_US |
| dc.identifier.citation | Bergen and Fayek, 2012 | en_US |
| dc.identifier.uri | http://hdl.handle.net/1993/14431 | |
| dc.language.iso | eng | en_US |
| dc.publisher | American Mineralogist | en_US |
| dc.rights | open access | en_US |
| dc.subject | uranium | en_US |
| dc.subject | geochemistry | en_US |
| dc.subject | environment | en_US |
| dc.subject | geochronology | en_US |
| dc.subject | tailings | en_US |
| dc.title | Uranium in the environment: a characterization and comparison of uranium mobility in ancient and modern sediments | en_US |
| dc.type | master thesis | en_US |