TY - JOUR

T1 - New geochronological data on time and conditions of organic-rich sediments formation in the bottom of the Belyi Yar-2 sequence (the eastern part of the Tunka rift basin, SE Siberia)

AU - Laukhin, Stanislav

AU - Maksimov, Fedor

AU - Savelieva, Larisa

AU - Larin, Sergey

AU - Kuznetsov, Vladislav

AU - Petrov, Aleksey

AU - Grigoryev, Vasily

AU - Arslanov, Khikmatulla

AU - Kobylkin, Dmitry

PY - 2016

Y1 - 2016

N2 - The Belyi Yar-2 key section (51°42' N, 102°37' E) located in the eastern part of the Tunka rift basin is a well known sequence but its chronology is discussible question up to now. The upper 13-15 m of the outcrop is composed by sands and the underlying lacustrine-alluvial deposits ~2 m thickness contain organic-rich layers. In the 60-s of the last century it was considered that these organic-rich layers were formed throughout the Early Pleistocene (Ravskyi, Golubeva, 1960). Later their age was correlated with the Late Pleistocene (marine isotope stage 3, MIS-3) (Adamenko et el., 1975; Shchetnikov et el., 2015). Latter conclusion was based on a number of 14C dates from ~41 kyr to ~26 kyr of vegetation remnants and bones. Our study was addressed on clarification of numerical age and environmental conditions of the lower part of the Belyi Yar-2 formation. The organic-rich samples were collected in 2013-2015 from the lower lacustrine-alluvial layer ~1.6 m thickness. The samples collected in 2013 yielded the fini

AB - The Belyi Yar-2 key section (51°42' N, 102°37' E) located in the eastern part of the Tunka rift basin is a well known sequence but its chronology is discussible question up to now. The upper 13-15 m of the outcrop is composed by sands and the underlying lacustrine-alluvial deposits ~2 m thickness contain organic-rich layers. In the 60-s of the last century it was considered that these organic-rich layers were formed throughout the Early Pleistocene (Ravskyi, Golubeva, 1960). Later their age was correlated with the Late Pleistocene (marine isotope stage 3, MIS-3) (Adamenko et el., 1975; Shchetnikov et el., 2015). Latter conclusion was based on a number of 14C dates from ~41 kyr to ~26 kyr of vegetation remnants and bones. Our study was addressed on clarification of numerical age and environmental conditions of the lower part of the Belyi Yar-2 formation. The organic-rich samples were collected in 2013-2015 from the lower lacustrine-alluvial layer ~1.6 m thickness. The samples collected in 2013 yielded the fini

KW - geochronology, Belyi Yar, SE Siberia

M3 - Meeting Abstract

VL - 1

SP - 70

EP - 70

JO - Geochronometria

JF - Geochronometria

SN - 1733-8387

Y2 - 11 May 2016 through 13 May 2016

ER -