Fig. 6: Grain size distribution of 63–250 μm zircon grains from the surface samples on the Laptev Sea, East Siberian Sea and Chukchi Sea.
From: Arctic zircon U-Pb ages reveal multiphase glaciations in East Siberia during the late Quaternary
The vertical scale shows frequency per 5 μm bin normalized to total sand fraction ( > 63 μm). The gray histograms in the background of each sample represent the zircon grain size distribution from all sand-rich ice-rafted debris (IRD) samples in cores LV90-8-1 and LV90-9-1. Note that zircon grains larger than 150 μm account for ~6 % to ~18% ( ~ 13% on average) in the sand fraction of IRD samples (Fig. S7), but less than 3% in almost all surface samples, except a near shore sample LV77-16. Source data are provided in Supplementary Data S2.
