New Data on the Litho- and Biostratigraphy of the J/K Boundary Interval of the Lower Reaches of the Lena River (Eastern Siberia)
- 1 State Key Laboratory of Palaeobiology and Stratigraphy, Nanjing Institute of Geology and Palaeontology CAS, Nanjing, China
- 2 Trofimuk Institute of Petroleum Geology and Geophysics SB RAS, Novosibirsk, Russia
- 3 Trofimuk Institute of Petroleum Geology and Geophysics SB RAS, Novosibirsk, Russia
- 4 Trofimuk Institute of Petroleum Geology and Geophysics SB RAS, Novosibirsk, Russia
- 5 Department of Geology and Geophysics, Novosibirsk State University, Novosibirsk, Russia
Abstract
New data on the litho- and biostratigraphy of the Jurassic/Cretaceous (J/K) boundary interval of the lower reaches of the Lena river, at the Cape Chekurovka and Cape Chucha, are presented. Volgian-Valanginian interval of the Chekurovka section is represented by Buolkalakh and Kigilyakh formations and corresponds to beds with Buchia fisheriana , beds with B. unschensis, beds with B. okensis and B. volgensis , beds with B. volgensis , beds with B. volgensis and B. tolmatschowi and beds with B. keyserlingi . Volgian-Valanginian interval of the Chucha section is represented by Chonoko, Khairgass and Kigilyakh formations and corresponds to beds with B. unschensis , beds with B. volgensis and B. okensis , beds with B. volgensis and B. tolmatschowi and beds with B. keyserlingi .
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