The "Lake Suigetsu 2006 Varved Sediment Core" project, or "Suigetsu Varves 2006" for short, is a multi-national, collaborative research project based around a sediment core taken from Lake Suigetsu [soo-ee-get-soo], central Japan, in summer 2006.The two over-arching aims of the project are: The project will therefore contribute to international scientific endeavour by using multi-proxy palaeoenvironmental data to determine the precise timings and rates of environmental changes, and in facilitating understanding of past changes in the global carbon cycle.In a related article on geologic ages (Ages), we presented a chart with the various geologic eras and their ages.In a separate article (Radiometric dating), we sketched in some technical detail how these dates are calculated using radiometric dating techniques.
Technical details on how these dates are calculated are given in Radiometric dating. As with any experimental procedure in any field of science, these measurements are subject to certain "glitches" and "anomalies," as noted in the literature.Alpha decay is usually restricted to the heavier elements in the periodic table.(Only a handful of nuclides with atomic numbers less than 83 emit an -particle.) The product of -decay is easy to predict if we assume that both mass and charge are conserved in nuclear reactions.14C is radioactive and has a half-life of 5730 years.The half-life is the time taken for an amount of a radioactive isotope to decay to half its original value.