The CRS model and/or the slope regression model will be applied. cumulative dry weight (g/cm) is supplied with the model results and interpretation.
Several Radium-226(Ra-226) measurements are often required, usually 2 - 3 per Pb-210 core, to positively determine the Pb-210 background level throughout the core length.
We have been providing radioisotope dating services for over 30 years and have dated cores from around the world (See the map below).
Cesium-137 is used as an independent tracer to validate the Pb-210 chronology.
The Cs-137 data will be interpreted on the basis of the 19 major input peaks or 1966 maximum inventory of the isotope in the northern hemisphere.
At Flett we use Lead-210(Pb-210) and Cesium-137(Cs-137) to determine the rate of sediment accumulation in lakes, oceans and other water bodies.
It is typical to analyze 10 - 20 sections of a sediment core for Pb-210 and a similar number of Cs-137, covering an accumulation period of about 160 years.
, Cs-137), cesium-137, or radiocaesium, is a radioactive isotope of caesium which is formed as one of the more common fission products by the nuclear fission of uranium-235 and other fissionable isotopes in nuclear reactors and nuclear weapons.