Ground ice and slope sediments archiving late Quaternary paleoenvironment and paleoclimate signals at the margins of El'gygytgyn Impact Crater, NE Siberia
Abstract An accumulation terrace close to the El'gygytgyn Impact Crater in northeastern Siberia contains stratigraphic and periglacial evidence of the paleoenvironmental and paleoclimatic history and permafrost dynamics during late Quaternary time. A succession of paleo active-layer deposits th...
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crcambridgeupr:10.1016/j.yqres.2006.06.007 2024-06-09T07:46:38+00:00 Ground ice and slope sediments archiving late Quaternary paleoenvironment and paleoclimate signals at the margins of El'gygytgyn Impact Crater, NE Siberia Schwamborn, Georg Meyer, Hanno Fedorov, Grigory Schirrmeister, Lutz Hubberten, Hans-W. 2006 http://dx.doi.org/10.1016/j.yqres.2006.06.007 http://api.elsevier.com/content/article/PII:S003358940600086X?httpAccept=text/xml http://api.elsevier.com/content/article/PII:S003358940600086X?httpAccept=text/plain https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0033589400004439 en eng Cambridge University Press (CUP) https://www.cambridge.org/core/terms Quaternary Research volume 66, issue 2, page 259-272 ISSN 0033-5894 1096-0287 journal-article 2006 crcambridgeupr https://doi.org/10.1016/j.yqres.2006.06.007 2024-05-15T13:03:39Z Abstract An accumulation terrace close to the El'gygytgyn Impact Crater in northeastern Siberia contains stratigraphic and periglacial evidence of the paleoenvironmental and paleoclimatic history and permafrost dynamics during late Quaternary time. A succession of paleo active-layer deposits that mirror environmental changes records periods favorable for the establishment and growth of ice-wedge polygonal networks and sediment variations. These two elements of the periglacial landscape serve as complementary paleoenvironmental archives that can be traced back to ∼ 14,000 cal yr BP. The slope sediments and the ground ice contained therein have prominent relative maxima and minima in properties (grain size, total organic content, oxygen isotopes). They document a regional early Holocene thermal maximum at about 9000 cal yr BP, followed by a transition to slightly cooler conditions, and a subsequent transition to slightly warmer conditions after about 4000 cal yr BP. Results from sedimentary analysis resemble morphological and geochemical (oxygen and hydrogen isotopes) results from ice wedge studies, in which successive generations of ice-wedge polygonal networks record warmer winters in late Holocene time. Moreover, peaks of light soluble cation contents and quartz-grain surface textures reveal distinct traces of cryogenic weathering. We propose a conclusive sedimentation model illustrating terrace formation in a permafrost terrain. Article in Journal/Newspaper Ice permafrost wedge* Siberia Cambridge University Press Quaternary Research 66 2 259 272 |
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Cambridge University Press |
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English |
description |
Abstract An accumulation terrace close to the El'gygytgyn Impact Crater in northeastern Siberia contains stratigraphic and periglacial evidence of the paleoenvironmental and paleoclimatic history and permafrost dynamics during late Quaternary time. A succession of paleo active-layer deposits that mirror environmental changes records periods favorable for the establishment and growth of ice-wedge polygonal networks and sediment variations. These two elements of the periglacial landscape serve as complementary paleoenvironmental archives that can be traced back to ∼ 14,000 cal yr BP. The slope sediments and the ground ice contained therein have prominent relative maxima and minima in properties (grain size, total organic content, oxygen isotopes). They document a regional early Holocene thermal maximum at about 9000 cal yr BP, followed by a transition to slightly cooler conditions, and a subsequent transition to slightly warmer conditions after about 4000 cal yr BP. Results from sedimentary analysis resemble morphological and geochemical (oxygen and hydrogen isotopes) results from ice wedge studies, in which successive generations of ice-wedge polygonal networks record warmer winters in late Holocene time. Moreover, peaks of light soluble cation contents and quartz-grain surface textures reveal distinct traces of cryogenic weathering. We propose a conclusive sedimentation model illustrating terrace formation in a permafrost terrain. |
format |
Article in Journal/Newspaper |
author |
Schwamborn, Georg Meyer, Hanno Fedorov, Grigory Schirrmeister, Lutz Hubberten, Hans-W. |
spellingShingle |
Schwamborn, Georg Meyer, Hanno Fedorov, Grigory Schirrmeister, Lutz Hubberten, Hans-W. Ground ice and slope sediments archiving late Quaternary paleoenvironment and paleoclimate signals at the margins of El'gygytgyn Impact Crater, NE Siberia |
author_facet |
Schwamborn, Georg Meyer, Hanno Fedorov, Grigory Schirrmeister, Lutz Hubberten, Hans-W. |
author_sort |
Schwamborn, Georg |
title |
Ground ice and slope sediments archiving late Quaternary paleoenvironment and paleoclimate signals at the margins of El'gygytgyn Impact Crater, NE Siberia |
title_short |
Ground ice and slope sediments archiving late Quaternary paleoenvironment and paleoclimate signals at the margins of El'gygytgyn Impact Crater, NE Siberia |
title_full |
Ground ice and slope sediments archiving late Quaternary paleoenvironment and paleoclimate signals at the margins of El'gygytgyn Impact Crater, NE Siberia |
title_fullStr |
Ground ice and slope sediments archiving late Quaternary paleoenvironment and paleoclimate signals at the margins of El'gygytgyn Impact Crater, NE Siberia |
title_full_unstemmed |
Ground ice and slope sediments archiving late Quaternary paleoenvironment and paleoclimate signals at the margins of El'gygytgyn Impact Crater, NE Siberia |
title_sort |
ground ice and slope sediments archiving late quaternary paleoenvironment and paleoclimate signals at the margins of el'gygytgyn impact crater, ne siberia |
publisher |
Cambridge University Press (CUP) |
publishDate |
2006 |
url |
http://dx.doi.org/10.1016/j.yqres.2006.06.007 http://api.elsevier.com/content/article/PII:S003358940600086X?httpAccept=text/xml http://api.elsevier.com/content/article/PII:S003358940600086X?httpAccept=text/plain https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0033589400004439 |
genre |
Ice permafrost wedge* Siberia |
genre_facet |
Ice permafrost wedge* Siberia |
op_source |
Quaternary Research volume 66, issue 2, page 259-272 ISSN 0033-5894 1096-0287 |
op_rights |
https://www.cambridge.org/core/terms |
op_doi |
https://doi.org/10.1016/j.yqres.2006.06.007 |
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Quaternary Research |
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66 |
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2 |
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259 |
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272 |
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1801376602660012032 |