Radiocarbon dating of pollen by accelerator mass spectrometry

Research has been ongoing since the 1960s to determine what the proportion of in the atmosphere has been over the past fifty thousand years.

In addition to permitting more accurate dating within archaeological sites than previous methods, it allows comparison of dates of events across great distances.

We are attempting to resolve whether this is due to contamination of the pollen or the presence of significant quantities of old reworked pollen.

Pollen dates from lake sediments associated with Mazama Ash were consistent with other published ages; however, replicate dates on pollen samples from above the ash were consistently older than the surrounding sediment.

Other corrections must be made to account for the proportion of throughout the biosphere (reservoir effects).

Additional complications come from the burning of fossil fuels such as coal and oil, and from the above-ground nuclear tests done in the 1950s and 1960s.

By contrast, methane created from petroleum showed no radiocarbon activity because of its age.

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The objective of this Lab is to provide prompt, accurate and precise radiocarbon 14 C accelerator mass spectrometry AMS analyses on a wide variety of. 
02-Nov-2018 19:00
Abstract Radiocarbon dating of bulk sediments has been the standard method for establishing chronologies in the studies of lake sediment cores which have. 
02-Nov-2018 19:03
A SIMPLE METHOD TO SEPARATE POLLEN FOR AMS RADIOCARBON DATING. The ability to obtain reliable radiocarbon dates from pollen using accelerator mass spectrometry 
02-Nov-2018 19:08

Radiocarbon dating of pollen by accelerator mass spectrometry introduction

Radiocarbon dating of pollen by accelerator mass spectrometry

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