Trace elements and stable isotope diagrams of Late Pleistocene ice wedges of Batagaika yedoma, Central Yakutia Yu.K.Vasil'chuk1 J.Yu.Vasil'chuk1 N. A. Budantseva1 A.C. Vasil'chuk1 1Department of Geography, Lomonosov Moscow State University, Moscow, Russia, e-mail:
[email protected] Abstract The subject of the study is the yedoma ice complex, which locates in the Batagaika depression, Sakha Republic, Russia. The oxygen and hydrogen stable isotope composition, and the content of the dissolved forms of minor and major elements were studied for the first time in ice-wedges of Batagaika depression, which makes the novelty of the study. The isotope composition of the two most saline ice-wedges located in the upper and lower parts of the Batagay depression indicates that they were formed in a close temperature range, the average winter temperature was close to –34/–35 °C, and the average January air temperature was –51/ –53 °C. The ice-wedge with the lowest content of all the trace elements was formed in more severe conditions, the average winter air temperature was close to -36 °C, and the average January air temperature was –54/–55 °C. Keywords: permafrost; ice wedge; oxygen isotope; hydrogen isotope; trace elements; East Siberia, Late Pleistocene The subject of the study is the yedoma, which is found lacustrine or taberal deposits, which are form horizontal in the Batagaika depression (67°34'49" N, 134°46'19" E), wedge 150-200 meters long and intruding into the located 10 km southeast of Batagai settlement (about 17 yedoma deposits and overlaying it.