Vilkitsky Island (East Siberian Sea)

Vilkitsky Island (; ) is the southernmost island of the De Long group in the northern part of the East Siberian Sea. The nearest island is Zhokhov Island. Administratively Vilkitsky Island belongs to Yakutia, an administrative division of the Russian Federation.Respublika Sakha (Yakutiya) Land Feature Database

The island is named after Russian hydrographer Andrey Vilkitsky.NAMES ON THE MAP OF THE ARCTIC. Вилькицкий Андрей Ипполитович

Geography The island is outside of the limits of permanent ice and is unglaciated. At barely Vilkitsky is the smallest island of the group. The highest elevation is above sea level.Headland, R. K. (1994): OSTROVA DE-LONGA ('De Long Islands')

Geology Judging from bedrock outcrops associated with the central, steepest part of seacliffs on its southern coast, Vilkitsky Island is composed of limburgite, a dense dark gray volcanic rock. The limburgite is represent by varieties with both crystalline textures and glassy, devitrified matrix. This volcanic rock occurs as both massive intrusions and lava flows, both of which exhibit narrow shear zones. The limburgite contains small olivine phenocrysts and xenoliths of spinel lherzolites. The spinel lherzolite xenoliths of Vilkitsky Island are structurally and mineralogically identical to the xenoliths found on Zhokhov Island.Silant'ev S.A., Bogdanovskii, O.G., Savostin, L.A., and Kononkova, N.I., 1991. Magmatizm arkhipelaga De Longa (vostochnaya Arktika). Petrologiya i petrokhimiya effuzivnykh porod i assotsiiruyushchikh s nimi ksenolitov (ostrova Zhokhova i Vil'kitskogo) [Magmatism of the De Long Archipelago (eastern Arctic). Petrology and petrochemistry of volcanic rocks, and associated xenoliths (Zhokhova and Vilkitsky Islands)]. Geokhimiya, (2) pp. 267-277.Silant'ev, S.A., Karpenko, S.F., Bogdanovskii, O.G. and Fedorov, P.I., 2004. Intraplate magmatism of the De Long Islands: A response to the propagation of the ultraslow-spreading Gakkel Ridge into the passive continental margin in the Laptev Sea. Russian Journal of Earth Sciences, 6(3) pp. 153-183. Based on limited data, volcanism on Vil’kitskii Island occurred between 0.89 and 0.4 Ma. This period of volcanism on Vilkitsky Island correlates with the later stages of olivine alkaline basalt volcanism on Zhokhov Island between 6.1 and 0.4 Ma.Bogdanovskii, O.G., Mineev, S.D., Assonov, S.S., Silantyev, S.A., Karpenko, S.F., Shukolyukov, Yu.A., and Savostin, L.A., 1992. Magmatism on the De Long Islands, eastern Arctic: isotopic geochemistry and geochronology. Geokhimiya, (1) pp. 47–57.Bogdanovskii, O.G., Silantyev, S.A., Karpenko, S.F., Mineev, S.D., and Savostin, LA., 1993. Ancient mantle xenoliths in young volcanic rocks on Zhokhov Island, De Long Islands, Dokl. Russ. Akad. Nauk. (330) pp. 750–753.

History Vilkitsky Island was discovered early on the morning of August 20, 1913 by the crew of the Icebreaker Taymyr. Along with the Icebreaker Vaygach, it was part of the Imperial Russian Arctic Ocean Hydrographic Expedition led by Boris Vilkitsky on behalf of the Russian Hydrographic Service in order to chart the last blank areas of Russian maps. Personnel from the Icebreaker Taymyr landed on it and hoisted a Russian flag. On August 24, 1914, a landing party from the Icebreaker Taymyr revisited Vilkitskiy Island and surveyed it.Starokadomski, L.M. and Cattley, O.J., 1919. Vilkitski's North-East Passage, 1914-15. The Geographical Journal, 54(6), pp.367-375.Barr, W., 1985. The Arctic Ocean Hydrographic expedition 1910–1915: An overview. Polar Geography, 9(4), pp.257-271. In 1986 and 1988, the Institute of Oceanology of the USSR Academy of Sciences, now known as the Shirshov Institute of Oceanology, and the Geochemical Institute of the USSR Academy of Sciences carried out field studies of the geology of the Zhokhov and Vilkitsky islands.

Vilkitsky Island (East Siberian Sea)

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