The CFC dating of the samples ranged from before to , with the exception of a sample from the water table, which had a present-day concentration. Cook and one anonymous reviewer. Accuracy of CFC groundwater dating in a crystalline bedrock aquifer: Tracing the young fraction in groundwater mixtures in the Upper Floridan Aquifer near Valdosta, Georgia. The paper has benefited from valuable and constructive reviews by Peter G.
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The CFC dating of the samples ranged from before to , with the exception of a sample from the water table, which had a present-day concentration. Cook and one anonymous reviewer. The mixing model approach can be extended with additional tracers. Olsson 2 3 1. Tracing the young fraction in groundwater mixtures in the Upper Floridan Aquifer near Valdosta, Georgia. For both SF 6 and the CFCs, the nature and thickness of the unsaturated zone need to be factored into residence time calculations.
На миг показалось, что ничего особенного не произошло; но затем Элвин сообразил, что Солнце также исчезло, а звезды медленно ползут мимо корабля. Кромки его округлились, а металл, на котором он покоился, был исшаркан миллионами ног целых поколений пилигримов и просто любопытствующих.
Вся Вселенная была для него просто детской площадкой для игр, увлекательной загадкой, которую надо разгадать ради собственного развлечения.
Imsges: cfc groundwater dating
However, as an inexpensive dating method, the trace gases can be applied to a wide range of groundwater problems where traditional age indicators might once have been used more sparingly.
Abstract Knowledge of groundwater residence time is important in understanding key issues in the evolution of water quality, whether this occurs due to water—rock interaction or simply by mixing or contamination. Models and their applicability.
The difference was probably caused by degradation of CFC Check if you have access through your login credentials or your institution. Compilation of data and conceptual model. The mixing model approach can be extended with additional tracers. Happell JD, Wallace DWR Gravimetric preparation of 100 percent free dating site uk phase working standards containing volatile halogenated compounds for oceanographic applications. Cfc groundwater dating comparison between CFC and tritium concentrations showed that most samples could be unmixed or mixtures of waters with different ages, and the binary mixtures that matched the measured concentrations were determined. Gustafsson E, Cfc groundwater dating C-E Studie av strontiums och cesiums migration i kristallin berggrund [A study of migration cating strontium and caesium in crystalline rock] in Swedish.