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Service DHI offers dating of sediment cores by means of the 210Pb method and may assist with sampling in both marine and freshwater systems.

The sediment samples must remain totally undisturbed during sampling to obtain the best possible dating.

The naturally lead isotope 210Pb may be used to date aquatic sediments and peat bogs.

The method is suitable for dating approximately 100 years back.

Tests of the top few cm and of surficial sediment indicate that the Po and Pb concentrations are quite similar.

The distance the point moves along this line is dependent on the U/Pb ratio, whereas the slope of the line depends on the time since Earth’s formation. The development of the Geochron was mainly attributed to Clair Cameron Patterson’s application of Pb-Pb dating on meteorites in 1956.

In addition, the results of the sensitivity analysis are reported.

The sediment dating may be supplemented with estimations of the content of alga pigments in the depths required.

As planetesimals collided, various fragments were scattered and produced meteorites.

Iron meteorites were identified as pieces of the core, while stony meteorites were segments of the mantle and crustal units of these various planetesimals.

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