Research output: Contribution to journal › Article › peer-review
Ice Complex permafrost of MIS5 age in the Dmitry Laptev Strait coastal region (East Siberian Arctic). / Wetterich, Sebastian; Tumskoy, Vladimir; Rudaya, Natalia; Kuznetsov, Vladislav; Maksimov, Fedor; Opel, Thomas; Meyer, Hanno; Andreev, Andrei A; Schirrmeister, Lutz.
In: Quaternary Science Reviews, Vol. 147, 2016, p. 298-311.Research output: Contribution to journal › Article › peer-review
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TY - JOUR
T1 - Ice Complex permafrost of MIS5 age in the Dmitry Laptev Strait coastal region (East Siberian Arctic)
AU - Wetterich, Sebastian
AU - Tumskoy, Vladimir
AU - Rudaya, Natalia
AU - Kuznetsov, Vladislav
AU - Maksimov, Fedor
AU - Opel, Thomas
AU - Meyer, Hanno
AU - Andreev, Andrei A
AU - Schirrmeister, Lutz
PY - 2016
Y1 - 2016
N2 - Ice Complex deposits (locally known as the Buchchagy Ice Complex) are exposed at both coasts of the East Siberian Dmitry Laptev Strait and preserved below the Yedoma Ice Complex that formed during MIS3 and MIS2 (Marine Isotope Stage) and lateglacial-Holocene thermokarst deposits (MIS1). Radioisotope disequilibria (230Th/U) of peaty horizons date the Buchchagy Ice Complex deposition to 126 +16/-13 kyr and 117 +19/-14 kyr until 98 ±5 kyr and 89 ±5 kyr. The deposit is characterised by poorly-sorted medium-to-coarse silts with cryogenic structures of horizontal ice bands, lens-like, and lens-like reticulated segregation ice. Two peaty horizons within the Buchchagy Ice Complex and syngenetic ice wedges (2 to 4 m wide, up to 10 m high) are striking. The isotopic composition (δ18O, δD) of Buchchagy ice-wedge ice indicates winter conditions colder than during the MIS3 interstadial and warmer than during MIS2 stadial, and similar atmospheric winter moisture sources as during the MIS2 stadial. Buchchagy Ice Complex pol
AB - Ice Complex deposits (locally known as the Buchchagy Ice Complex) are exposed at both coasts of the East Siberian Dmitry Laptev Strait and preserved below the Yedoma Ice Complex that formed during MIS3 and MIS2 (Marine Isotope Stage) and lateglacial-Holocene thermokarst deposits (MIS1). Radioisotope disequilibria (230Th/U) of peaty horizons date the Buchchagy Ice Complex deposition to 126 +16/-13 kyr and 117 +19/-14 kyr until 98 ±5 kyr and 89 ±5 kyr. The deposit is characterised by poorly-sorted medium-to-coarse silts with cryogenic structures of horizontal ice bands, lens-like, and lens-like reticulated segregation ice. Two peaty horizons within the Buchchagy Ice Complex and syngenetic ice wedges (2 to 4 m wide, up to 10 m high) are striking. The isotopic composition (δ18O, δD) of Buchchagy ice-wedge ice indicates winter conditions colder than during the MIS3 interstadial and warmer than during MIS2 stadial, and similar atmospheric winter moisture sources as during the MIS2 stadial. Buchchagy Ice Complex pol
KW - cryostratigraphy
KW - palaeoenvironments
KW - 230Th/U dating
KW - permafrost
KW - Bol'shoy Lyakhovsky Island
KW - Oyogos Yar
KW - Beringia
KW - MarineIsotope Stage 5
U2 - 10.1016/j.quascirev.2015.11.016
DO - 10.1016/j.quascirev.2015.11.016
M3 - Article
VL - 147
SP - 298
EP - 311
JO - Quaternary Science Reviews
JF - Quaternary Science Reviews
SN - 0277-3791
ER -
ID: 7548527