Values of δ¹⁸О, δ²Н and dexc in ice of Holocene and modern ice wedges on the east coast of the Daurkin Peninsula, Chukotka.Stable isotope ratios (δ¹⁸О and δ²H) were analyzed at the stable isotope laboratory of the Faculty of Geography in the Lomonosov Moscow State University (headed by Prof. Yu. Vasil'chuk) using a Finnigan Delta‐V Plus mass spectrometer applying equilibration techniques. International standards (V ‑ SMOW, GRESP, SLAP) were used for calibration. The values are presented in δ‐notation in per mil (‰) relative to the Vienna Standard Mean Ocean Water (VSMOW) expressed in per mil (‰). Analytical precision was ±0.1‰ for δ¹⁸О and±0.8‰ for δ²H.