The features of the Paleozoic-Mesozoic complexes of Kiber Cape (Chukotka, Arctic Russia): a structural-deforma-tion analysis

Three major regional deformation stages of Central Chukotka tectonic evolution were determined in Paleozoic-Mesozoic deposits of Kiber Cape. The research was based on a structural analysis of the linear and planar elements. Ellesmerian (Late Devonian) structural parageneses were masked during (at least) two phases of young Mesozoic-Cenozoic deformations: syncollisional North-North-East - South-South-West and North-West - South-East regional compressions and post-collisional extension of various directions, followed the compressions. The structural data comparison was made for Kiber Cape region, South-Anyui suture and Western Chukotka sector. It was emphasized that these regional units have similar structure styles and coeval phases of the tectonic transformations.

Ellesmerian deformation, Late Paleozoic granite, Kiber Cape, structural analysis, collision, East Arctic, Chukotka, Paleozoic, Arctic Alaska-Chukotka microcontinent, Ellesmerian orogeny

1. Вержбицкий В.Е., Соколов С.Д., Тучкова М.И. Тектоника, этапы структурной эволюции и перспективы нефтегазоносности шельфа Чукотского моря (Российская Арктика). Геология полярных областей Земли. // Мат. XLII Тектонического совещания. Т. 1. М.: ГЕОС, 2009. С. 85-90.

2. Катков С.М., Лучицкая М.В., Котов А.Б., Сальникова Е.Б., Яковлева С.З. Позднепалеозойские гранито-иды Центральной Чукотки: структурное положение и обоснование возраста//Доклады РАН. 2013. Т. 450. № 2. С. 193-198.

3. Катков С.М., Миллер Э.Л., Торо Х. Структурные парагенезы и возраст деформаций западного сектора Анюйско- Чукотской складчатой системы (Северо-Восток Азии) // Геотектоника. 2010. № 3. С. 1-20.

4. Natal’in B.A., Amato J.M., Toro J., Wright J.E. Paleozoic rocks of northern Chukotka Peninsula, Russian Far East // Tectonics. 1999. V. 18. N 6. P. 977-1003.

5. Sokolov S.D., Bondarenko G.Ye., Morozov O.L. et al. Souyh Anyui suture, northeast Arctic Russia: Facts and problems // Tectonic evolution of the Bering Shelf-Chukchi Sea-Arctic Margin and Ajacent Landmasses / E.L. Miller, A. Grantz, S.L. Klemperer (Eds). Boulder, Colorado, GSA Special Paper 360. 2002. P. 209-224.