Title: Chinese Dating Etiquette Blasted! - PowerPoint PPT Presentation

Description: Without going into the technical details associated with dating insects, i.e., molecular clock rates, accelerator mass spectrometry (AMS), chitin, etc., similar problems apply in the dating of insects, grass and moss collected from inside Silbury Hill in 2007! According to the English Heritage archaeologists the fresh and green vegetation preserved inside the mound in an "oxygen free environment" was dated to 4,400 years. Ii is unlikely that an oxygen free environment or vacuum exists within Silbury Hill, but anyhow on exposure to the outside elements would immediately contaminate the samples! – PowerPoint PPT presentation