Formation Chronology of Arsain Pingo, Darhad Basin, Northern Mongolia

Abstract Numerous frost mounds exist on the meander belt and alluvial fan around Arsain Gol River in Darhad basin, northern Mongolia, at the southern fringe of the north‐eastern Eurasian permafrost zone. In this environment, abundant water supply and inter‐permafrost taliks may allow the development...

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Published in:Permafrost and Periglacial Processes
Main Authors: Ishikawa, Mamoru, Yamkhin, Jambaljav
Other Authors: Scientific Research (B), JSPS KAKENHI
Format: Article in Journal/Newspaper
Language:English
Published: Wiley 2015
Subjects:
Ice
Online Access:http://dx.doi.org/10.1002/ppp.1877
https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1002%2Fppp.1877
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spelling crwiley:10.1002/ppp.1877 2024-09-15T18:11:30+00:00 Formation Chronology of Arsain Pingo, Darhad Basin, Northern Mongolia Ishikawa, Mamoru Yamkhin, Jambaljav Scientific Research (B), JSPS KAKENHI 2015 http://dx.doi.org/10.1002/ppp.1877 https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1002%2Fppp.1877 https://onlinelibrary.wiley.com/doi/pdf/10.1002/ppp.1877 en eng Wiley http://onlinelibrary.wiley.com/termsAndConditions#vor Permafrost and Periglacial Processes volume 27, issue 3, page 297-306 ISSN 1045-6740 1099-1530 journal-article 2015 crwiley https://doi.org/10.1002/ppp.1877 2024-08-01T04:22:45Z Abstract Numerous frost mounds exist on the meander belt and alluvial fan around Arsain Gol River in Darhad basin, northern Mongolia, at the southern fringe of the north‐eastern Eurasian permafrost zone. In this environment, abundant water supply and inter‐permafrost taliks may allow the development of artesian pressure that leads to groundwater upwelling. The aim of this study was to determine the formation chronology of pingos in this region. The Arsain pingo was drilled to a depth of 35 m to determine the stratigraphy, and data were collected on ground‐ice stable isotopic composition, electrical resistivity, ground temperature, and radiocarbon dating and interpreted in conjunction with the chronology of paleo‐lake retreat in the basin. A 10 m thick ice core sandwiched between fine‐grained lacustrine sediments was identified by drilling and electrical resistivity tomography (ERT). Stable isotope values of ice core samples indicated Rayleigh‐type isotope fractionation during the freezing of liquid water. Consequently, closed‐system freezing of artesian groundwater appears to be the driving mechanism of pingo formation. Near‐surface, segregated ground ice formed from the open‐system freezing of meteoric water, concurrent with pingo growth. The lake coverage was extensive until about 10,000 years before present (yr bp ), and the growth of the Arsain pingo began after 4500 yr bp , when the paleo‐lake was completely drained. The pingo is not presently growing because of a limited groundwater supply to feed the ice core. Copyright © 2015 John Wiley & Sons, Ltd. Article in Journal/Newspaper Ice ice core permafrost Permafrost and Periglacial Processes Wiley Online Library Permafrost and Periglacial Processes 27 3 297 306
institution Open Polar
collection Wiley Online Library
op_collection_id crwiley
language English
description Abstract Numerous frost mounds exist on the meander belt and alluvial fan around Arsain Gol River in Darhad basin, northern Mongolia, at the southern fringe of the north‐eastern Eurasian permafrost zone. In this environment, abundant water supply and inter‐permafrost taliks may allow the development of artesian pressure that leads to groundwater upwelling. The aim of this study was to determine the formation chronology of pingos in this region. The Arsain pingo was drilled to a depth of 35 m to determine the stratigraphy, and data were collected on ground‐ice stable isotopic composition, electrical resistivity, ground temperature, and radiocarbon dating and interpreted in conjunction with the chronology of paleo‐lake retreat in the basin. A 10 m thick ice core sandwiched between fine‐grained lacustrine sediments was identified by drilling and electrical resistivity tomography (ERT). Stable isotope values of ice core samples indicated Rayleigh‐type isotope fractionation during the freezing of liquid water. Consequently, closed‐system freezing of artesian groundwater appears to be the driving mechanism of pingo formation. Near‐surface, segregated ground ice formed from the open‐system freezing of meteoric water, concurrent with pingo growth. The lake coverage was extensive until about 10,000 years before present (yr bp ), and the growth of the Arsain pingo began after 4500 yr bp , when the paleo‐lake was completely drained. The pingo is not presently growing because of a limited groundwater supply to feed the ice core. Copyright © 2015 John Wiley & Sons, Ltd.
author2 Scientific Research (B), JSPS KAKENHI
format Article in Journal/Newspaper
author Ishikawa, Mamoru
Yamkhin, Jambaljav
spellingShingle Ishikawa, Mamoru
Yamkhin, Jambaljav
Formation Chronology of Arsain Pingo, Darhad Basin, Northern Mongolia
author_facet Ishikawa, Mamoru
Yamkhin, Jambaljav
author_sort Ishikawa, Mamoru
title Formation Chronology of Arsain Pingo, Darhad Basin, Northern Mongolia
title_short Formation Chronology of Arsain Pingo, Darhad Basin, Northern Mongolia
title_full Formation Chronology of Arsain Pingo, Darhad Basin, Northern Mongolia
title_fullStr Formation Chronology of Arsain Pingo, Darhad Basin, Northern Mongolia
title_full_unstemmed Formation Chronology of Arsain Pingo, Darhad Basin, Northern Mongolia
title_sort formation chronology of arsain pingo, darhad basin, northern mongolia
publisher Wiley
publishDate 2015
url http://dx.doi.org/10.1002/ppp.1877
https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1002%2Fppp.1877
https://onlinelibrary.wiley.com/doi/pdf/10.1002/ppp.1877
genre Ice
ice core
permafrost
Permafrost and Periglacial Processes
genre_facet Ice
ice core
permafrost
Permafrost and Periglacial Processes
op_source Permafrost and Periglacial Processes
volume 27, issue 3, page 297-306
ISSN 1045-6740 1099-1530
op_rights http://onlinelibrary.wiley.com/termsAndConditions#vor
op_doi https://doi.org/10.1002/ppp.1877
container_title Permafrost and Periglacial Processes
container_volume 27
container_issue 3
container_start_page 297
op_container_end_page 306
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