These data have been obtained from the Environmental Change Research Centre (ECRC) lake sediment core archive with well-resolved time intervals (1850, 1900, 1980 and present) determined by radiometric dating (210Pb; 137Cs). The sediment archive has grown from lake coring projects undertaken by the department and employees of ENSIS Ltd, the environmental consultancy based within the ECRC.This data has been collated to investigate historical sources and accumulation of C and N in lakes. Details of core materials in the archive are maintained by the ECRC-UCL "AMPHORA" database from which core location, collection date, lake name and LOI 550% (organic content) values are were derived for this dataset. Date of dating using the advantages and disadvantages of radiometric dating eden sher and charlie mcdermott dating wolfgang siebel peter.
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If it is quenched, probably only slow step-wise cooling would be enough.