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Jeannette Island : ウィキペディア英語版 | Jeannette Island
Jeannette Island ((ロシア語:Остров Жанне́тты), ''Ostrov Zhannetty'') is the easternmost island of the De Long Islands archipelago in the East Siberian Sea. It is the second smallest island of the De Long group, being only 2 km in length. It has an area of approximately . The highest peak of the island is . It is mainly covered with glaciers and firn. ==Geology== Jeannette Island consists of folded Paleozoic graywackes overlain by Cenozoic conglomerates. The graywacke is coarse-grained and contains local lenses of conglomerate. An unconformity separates the Cenozoic conglomerate from the underlying graywacke. The Cenozoic conglomerate contains well-rounded pebbles, cobbles, and boulders of quartz sandstone, quartzite, diorite, andesite-basalts, and altered granite.〔Kos’ko, M.K., B.G. Lopatin, and V.G. Ganelin, 1990, ''Major geological features of the islands of the East Siberian and Chukchi Seas and the Northern Coast of Chukotka.'' Marine Geology. vol. 93, pp. 349–367.〕〔Fujita, K., and D.B. Cook, 1990, ''The Arctic continental margin of eastern Siberia'', in A. Grantz, L. Johnson, and J. F. Sweeney, eds., pp. 289-304, The Arctic Ocean Region. Geology of North America, vol L, Geological Society of America, Boulder, Colorado.〕
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