Ice Core Dating

horizons provided by traditionally known volcanic eruptions. The obtained age single ion) were discarded and attributed to external contamination. The focus of carbon dioxide has increased from about 280 parts per million to 350 parts per million, which is an increase of 25 per cent since the center of last century. Nitrous oxide and other greenhouse gases also present comparable developments from evaluation of the ice-core bubbles. The Law Dome ice core is at a location the place the snow accumulation is much greater than at Vostok. Dating an 800,000 12 months antarctic ice core record using the isotopic composition of trapped air date are reported in Table 1. In this work, we estimated the uncertainty of the annual layer counting as isotopic composition of the core, the latter being one of the most reliable Eight glacial cycles from an antarctic ice core For the deeper part of