@jhaue from the article Charcoal deposited on the dune surface by past fires collects in sediment layers at the base of the dune. Patton et al 2023/Quaternary Research. “.. newly published research focuses on four well-dated sand dunes. Unlike previous studies that extracted fire histories from sediment cores from lakes, bogs and other organic sediments, we extracted fire records from these dunes. We believe this is a breakthrough that will greatly expand the areas for which we can extract fire histories….
For the first 1,000 years after the dunes stabilised, frequent but minor flows of sand grains down the front face of the dune slowly built up sediments at the foot of the dune. The sand deposited at the base includes the remnants of charcoal from local fires that deposited on the dune’s surface. This sediment builds up over time, preserving layers of charcoal from fires..”
#fire #CarbonDating #FireHistory #Holocene

8 Simple Rules for Dating My Stone-age Carbon

1. Radioactive isotopes are unstable but not unloveable. Handle with care and especially with gloves
2.

#carbondating #sciencejokes #jokes #radioactive

@gerrymcgovern

#Africans should get going with #carbondating and #signature analyses, and then sue the culprit #European countries for #damages and #recycling cost.

Due to #atmospheric testing of #nuclearbombs the concentration of ¹⁴C (#radiocarbon) increased, the so called "bomb pulse". This complicates #carbondating but also provides proof that living organisms were born during or just after an increase of atmospheric ¹⁴C. Highly interesting!

https://en.m.wikipedia.org/wiki/Bomb_pulse