Late Quaternary History of the Accumulation Plain North of the Chekanovsky Ridge (Lena Delta, Russia): A Multidisciplinary Approach
|Title||Late Quaternary History of the Accumulation Plain North of the Chekanovsky Ridge (Lena Delta, Russia): A Multidisciplinary Approach|
|Publication Type||Journal Article|
|Year of Publication||2003|
|Authors||Schirrmeister, L, Grosse, G, Schwamborn, G, Andreev, AA, Meyer, H, Kunitsky, VV, Kuznetsova, TV, Dorozhkina, MV, Pavlova, EY, Bobrov, AA, Oezen, D|
|Date Published||1 October 2003|
|Keywords||Arctic, Chekanovsky Ridge, dating, delta, fluvial deposits, Ice complex, IRSL, Late Pleistocene, lena, Lena delta, O, palaeo studies, Palaeoclimate, palaeoclimatic interpretation, palaeoenvironment, paleoclimate, Permafrost, Pleistocene, Russia, Siberia|
Permafrost deposits were studied along the Olenyeksky and the Arinsky distributaries in the western Lena delta using a multidisciplinary approach that included sedimentological, mineralogical, stable-isotope, and paleoecological analyses in order to reconstruct the Late Quaternary landscape and environmental history of this Northeast Siberian region. The studied sequence consists of two main units that differed in age, lithology, geocryology, and paleoecological bio-indicators. The lower sandy unit is interpreted as a shallow-water point-bar deposit of a paleo-Lena River. The upper unit contains the facially different Ice Complex deposits along with large ice wedges and numerous paleosols consisting of clastic material originating from the neighboring Chekanovsky Ridge to the south. These Ice Complex deposits are typical Late Pleistocene sediments in Siberia and are widely distributed in the coastal plains in Northeast Siberia.