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UDC 552.5+(551.8:551.763.1)(571.51/.52-17) LITHOLOGY AND PALEOGEOGRAPHY OF THE LOWER CRETACEOUS DEPOSITS OF THE ANABAR-KHATANGA SADDLE (NORTHERN MIDDLE SIBERIA)
O. N. Zlobina, V. A. Marinov, S. A. Kugakolov, A. S. Perepyolkin
The paper reports the results of detailed lithological studies of the Lower Cretaceous deposits exposed in the coastal cliffs of the Yuryung-Tumus Peninsula in the Nordvik Bay in the northern Central Siberia. The findings enabled the authors to reveal the section structure features, grain and mineral composition of the sediments and to draw preliminary conclusions about depositional environment characteristics of designated formations. An assumption is made that in the Jurassic and Cretaceous times the Central Taimyr accretionary belt had stretched eastwards much further than currently. Mountain ranges composed of high-Ti basaltic series were a specific provenance area. Later, this part of the land subsided and now is hidden under the Laptev Sea waters.
Key words: Lower Cretaceous cross-sections, analysis of texture, structure and mineral composition of deposits.
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