Cylindrical sample drilled from an ice sheet. Geology Geochronology Scientific technique. In order to get younger gas records, scientists have gone to higher snowfall areas, especially Law Dome, Antarctica, where gases are trapped much more recently. Is there anyone on this site who could refer me to an expert or is an expert? Hope that helps in some small way.
Lastly, how well does ice core data from different locations correlate?
Memoirs of National Institute of Polar Research I do not deny we are heating up the earth but could you detect if so was made before? Reply from Dr Peter Neff: Ice cores can be dated using counting of annual layers in their uppermost layers. This method provides detailed records of carbon dioxide, methane and nitrous oxide going back overyears. The oldest core was found to include ice from 2. Results from both Vostok and DomeC shown.