A multimethod dating study of ancient permafrost, Batagay megaslump, east Siberia
Dating of ancient permafrost is essential for understanding long-term permafrost stability and interpreting palaeoenvironmental conditions but presents substantial challenges to geochronology. Here, we apply four methods to permafrost from the megaslump at Batagay, east Siberia: (1) optically stimul...
Published in: | Quaternary Research |
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Language: | English |
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Cambridge University Press
2021
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Online Access: | http://sro.sussex.ac.uk/id/eprint/98415/ http://sro.sussex.ac.uk/id/eprint/98415/1/Ms%20accepted%202%20Apr%202021.pdf http://sro.sussex.ac.uk/id/eprint/98415/4/a-multimethod-dating-study-of-ancient-permafrost-batagay-megaslump-east-siberia.pdf https://doi.org/10.1017/qua.2021.27 |
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ftunivsussex:oai:sro.sussex.ac.uk:98415 2023-07-30T04:04:03+02:00 A multimethod dating study of ancient permafrost, Batagay megaslump, east Siberia Murton, Julian B Opel, Thomas Toms, Phillip Blinov, Alexander Fuchs, Margret Wood, Jamie Gärtner, Andreas Merchel, Silke Rugel, Georg Savvinov, Grigoriy Wetterich, Sebastian 2021-06-15 application/pdf http://sro.sussex.ac.uk/id/eprint/98415/ http://sro.sussex.ac.uk/id/eprint/98415/1/Ms%20accepted%202%20Apr%202021.pdf http://sro.sussex.ac.uk/id/eprint/98415/4/a-multimethod-dating-study-of-ancient-permafrost-batagay-megaslump-east-siberia.pdf https://doi.org/10.1017/qua.2021.27 en eng Cambridge University Press http://sro.sussex.ac.uk/id/eprint/98415/1/Ms%20accepted%202%20Apr%202021.pdf http://sro.sussex.ac.uk/id/eprint/98415/4/a-multimethod-dating-study-of-ancient-permafrost-batagay-megaslump-east-siberia.pdf Murton, Julian B, Opel, Thomas, Toms, Phillip, Blinov, Alexander, Fuchs, Margret, Wood, Jamie, Gärtner, Andreas, Merchel, Silke, Rugel, Georg, Savvinov, Grigoriy and Wetterich, Sebastian (2021) A multimethod dating study of ancient permafrost, Batagay megaslump, east Siberia. Quaternary Research. pp. 1-22. ISSN 0033-5894 cc_by_4 Article PeerReviewed 2021 ftunivsussex https://doi.org/10.1017/qua.2021.27 2023-07-11T20:43:52Z Dating of ancient permafrost is essential for understanding long-term permafrost stability and interpreting palaeoenvironmental conditions but presents substantial challenges to geochronology. Here, we apply four methods to permafrost from the megaslump at Batagay, east Siberia: (1) optically stimulated luminescence (OSL) dating of quartz, (2) post-infrared infrared-stimulated luminescence (pIRIR) dating of K-feldspar, (3) radiocarbon dating of organic material, and (4) 36Cl/Cl dating of ice wedges. All four chronometers produce stratigraphically consistent and comparable ages. However, OSL appears to date Marine Isotope Stage (MIS) 3 to MIS 2 deposits more reliably than pIRIR, whereas the latter is more consistent with 36Cl/Cl ages for older deposits. The lower ice complex developed at least 650 ka, potentially during MIS 16, and represents the oldest dated permafrost in western Beringia and the second-oldest known ice in the Northern Hemisphere. It has survived multiple interglaciations, including the super-interglaciation MIS 11c, though a thaw unconformity and erosional surface indicate at least one episode of permafrost thaw and erosion occurred sometime between MIS 16 and 6. The upper ice complex formed from at least 60 to 30 ka during late MIS 4 to 3. The sand unit above the upper ice complex is dated to MIS 3–2, whereas the sand unit below formed at some time between MIS 4 and 16. Article in Journal/Newspaper Ice permafrost wedge* Beringia Siberia University of Sussex: Sussex Research Online Quaternary Research 1 22 |
institution |
Open Polar |
collection |
University of Sussex: Sussex Research Online |
op_collection_id |
ftunivsussex |
language |
English |
description |
Dating of ancient permafrost is essential for understanding long-term permafrost stability and interpreting palaeoenvironmental conditions but presents substantial challenges to geochronology. Here, we apply four methods to permafrost from the megaslump at Batagay, east Siberia: (1) optically stimulated luminescence (OSL) dating of quartz, (2) post-infrared infrared-stimulated luminescence (pIRIR) dating of K-feldspar, (3) radiocarbon dating of organic material, and (4) 36Cl/Cl dating of ice wedges. All four chronometers produce stratigraphically consistent and comparable ages. However, OSL appears to date Marine Isotope Stage (MIS) 3 to MIS 2 deposits more reliably than pIRIR, whereas the latter is more consistent with 36Cl/Cl ages for older deposits. The lower ice complex developed at least 650 ka, potentially during MIS 16, and represents the oldest dated permafrost in western Beringia and the second-oldest known ice in the Northern Hemisphere. It has survived multiple interglaciations, including the super-interglaciation MIS 11c, though a thaw unconformity and erosional surface indicate at least one episode of permafrost thaw and erosion occurred sometime between MIS 16 and 6. The upper ice complex formed from at least 60 to 30 ka during late MIS 4 to 3. The sand unit above the upper ice complex is dated to MIS 3–2, whereas the sand unit below formed at some time between MIS 4 and 16. |
format |
Article in Journal/Newspaper |
author |
Murton, Julian B Opel, Thomas Toms, Phillip Blinov, Alexander Fuchs, Margret Wood, Jamie Gärtner, Andreas Merchel, Silke Rugel, Georg Savvinov, Grigoriy Wetterich, Sebastian |
spellingShingle |
Murton, Julian B Opel, Thomas Toms, Phillip Blinov, Alexander Fuchs, Margret Wood, Jamie Gärtner, Andreas Merchel, Silke Rugel, Georg Savvinov, Grigoriy Wetterich, Sebastian A multimethod dating study of ancient permafrost, Batagay megaslump, east Siberia |
author_facet |
Murton, Julian B Opel, Thomas Toms, Phillip Blinov, Alexander Fuchs, Margret Wood, Jamie Gärtner, Andreas Merchel, Silke Rugel, Georg Savvinov, Grigoriy Wetterich, Sebastian |
author_sort |
Murton, Julian B |
title |
A multimethod dating study of ancient permafrost, Batagay megaslump, east Siberia |
title_short |
A multimethod dating study of ancient permafrost, Batagay megaslump, east Siberia |
title_full |
A multimethod dating study of ancient permafrost, Batagay megaslump, east Siberia |
title_fullStr |
A multimethod dating study of ancient permafrost, Batagay megaslump, east Siberia |
title_full_unstemmed |
A multimethod dating study of ancient permafrost, Batagay megaslump, east Siberia |
title_sort |
multimethod dating study of ancient permafrost, batagay megaslump, east siberia |
publisher |
Cambridge University Press |
publishDate |
2021 |
url |
http://sro.sussex.ac.uk/id/eprint/98415/ http://sro.sussex.ac.uk/id/eprint/98415/1/Ms%20accepted%202%20Apr%202021.pdf http://sro.sussex.ac.uk/id/eprint/98415/4/a-multimethod-dating-study-of-ancient-permafrost-batagay-megaslump-east-siberia.pdf https://doi.org/10.1017/qua.2021.27 |
genre |
Ice permafrost wedge* Beringia Siberia |
genre_facet |
Ice permafrost wedge* Beringia Siberia |
op_relation |
http://sro.sussex.ac.uk/id/eprint/98415/1/Ms%20accepted%202%20Apr%202021.pdf http://sro.sussex.ac.uk/id/eprint/98415/4/a-multimethod-dating-study-of-ancient-permafrost-batagay-megaslump-east-siberia.pdf Murton, Julian B, Opel, Thomas, Toms, Phillip, Blinov, Alexander, Fuchs, Margret, Wood, Jamie, Gärtner, Andreas, Merchel, Silke, Rugel, Georg, Savvinov, Grigoriy and Wetterich, Sebastian (2021) A multimethod dating study of ancient permafrost, Batagay megaslump, east Siberia. Quaternary Research. pp. 1-22. ISSN 0033-5894 |
op_rights |
cc_by_4 |
op_doi |
https://doi.org/10.1017/qua.2021.27 |
container_title |
Quaternary Research |
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1 |
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22 |
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1772815222961078272 |