www.clim-past-discuss.net/8/435/2012/ doi:10.5194/cpd-8-435-2012 © Author(s) 2012. This work is distributed under the Creative Commons Attribution 3.0 License. Planetary fertility during the past 400 ka based on the triple isotope composition of O2 in trapped gases from the Vostok ice core Abstract Discussion Paper (PDF, 3564 KB) |