Time series of d18O and its MEM Spectrum. The top plot shows the observed data 
(not available) organized as average values in 100-yr bins (1-100yr; 101-200yr;
..., available at NOAA Paleo. The arid event at 4.2 Ka and the cold one at 
8.2 Ka are visible.
I note that the average d118O values grow from ~9 Ka to ~3.2 Ka and, after
that date, they drop up to now (i.e. 2013 CE). Also visible is the LIA
(0.7-0.2 Ka or 1300-1850 CE). These events are outlined by <a
href="stars.png" target=_blank>black stars</a>.