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In conjunction with the Geosciences Advisory Unit at the National Oceanography Centre in Southampton we are able to offer this technique for precisely dating very recent sediments.
This is particularly applicable in dating sediment accumulation rates for geohazard analysis in subsea engineering projects.
Applications are in the areas of Late Quaternary geochronology, sedimentology and biochronology.
Please discuss your proposal with the appropriate ANSTO Contact Scientist before submitting your proposal as they will assist you in making the correct capability selection.
At present the radioactivity in the sediments is not expected to cause harmful effects to the Baltic Sea wildlife.Both isotopes when coalescing with raindrops, will fall to the atmosphere and be absorped and adsorped by plant matter in a marsh.As sea level rises, the sediments accumulate vertically covering older sediments and seasonal plant matter.This continues over time and a vertical accretion of mud accumulates leaving a record of the past.We sample the mud by coring and collecting through it, then run dried and crushed mud samples through the Gemanium Gamma Detector to measure Cs-137 and Pb-210 levels.
AMS dating is possible on very small samples (a few milligrams).