Still aglow from the 25th anniversary reunion of my Isotope Cosmochemistry and Geochronology Laboratory this past weekend! #ExploringTheCosmosSince1999
Check out the latest paper published in Open Quaternary (we need a BlueSky account-oops). "Old Fossils, New Information: Insights into Site Formation Processes of Two Pleistocene Cave Sequences in Zambia from Enamel Amino Acid Geochronology" openquaternary.com/articles/10....
Good work on reanalyzing the geochronology. Enjoyed the article. Fascinating, Dee! Thank you.
6/ A personal link – as Director of the ANU Research School of Earth Sciences in the early 80’s, Ringwood was a major supporter of building the Sensitive High Resolution Ion Microprobe (SHRIMP) for geochronology. Sadly I never met him, but my career would have been very different without his work.
2/ In U-Pb geochronology, Pb has 4 isotopes: 204, 206, 207, 208. All but 204Pb are from radioactive decay of U and Th and used for dating minerals. 204Pb was here before the Earth formed. It tells us how much Pb was already in a mineral when it formed and corrects our age dating calculations.
1/ My annual PSA: #Mercury#MinCup24#Quartz#Quartz it isn't trying to wreck your nervous system or screw up your geochronology...
#MinCup24 R1 M11: #Quartz versus #Mercury It’s a clash of titans as two iconic minerals face off this round. Quartz is the most prevalent mineral on the surface of the Earth. Today it faces off against mercury, the only naturally-occurring metal to be liquid at room temperature.
Quartz vs Mercury
The question over the geochronology of the human settlement of the Cagayan River Basin Geochronological advances in human and proboscideans first arrival date in the Philippines archipelago (Cagayan valley, Luzon Island) 🏺🧪 Jean-Baptiste Lambard JJ Hublin et al www.sciencedirect.com/science/arti...
If the altar stone at Stonehenge was transported some of the way by a glacier, it is most likely it would have been plucked from subsurface bedrock. Once deposited as an erratic it would be exposed from then til now. So could try 36Cl cosmic nuclide geochronology to date the surface. If it was