Evaluation of Mumiyo Deposits From East Antarctica as Archives for the Late Quaternary Environmental and Climatic History
Mumiyo deposits form in the vicinity of snow petrel (Pagodroma nivea) nesting sites and consist of fossil stomach oil (mumiyo), guano, and minerogenic material. Here we evaluate mumiyo deposits from the inland mountain ranges of central Dronning Maud Land as high-resolution archives for paleoenviron...
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ftubkoeln:oai:USBKOELN.ub.uni-koeln.de:13967 2023-05-15T13:36:41+02:00 Evaluation of Mumiyo Deposits From East Antarctica as Archives for the Late Quaternary Environmental and Climatic History Berg, S. Melles, M. Hermichen, W. -D. McClymont, E. L. Bentley, M. J. Hodgson, D. A. Kuhn, G. 2019 https://kups.ub.uni-koeln.de/13967/ eng eng AMER GEOPHYSICAL UNION Berg, S., Melles, M., Hermichen, W. -D., McClymont, E. L., Bentley, M. J., Hodgson, D. A. and Kuhn, G. (2019). Evaluation of Mumiyo Deposits From East Antarctica as Archives for the Late Quaternary Environmental and Climatic History. Geochem. Geophys. Geosyst., 20 (1). S. 260 - 277. WASHINGTON: AMER GEOPHYSICAL UNION. ISSN 1525-2027 ddc:no doc-type:article publishedVersion 2019 ftubkoeln 2022-11-09T07:14:18Z Mumiyo deposits form in the vicinity of snow petrel (Pagodroma nivea) nesting sites and consist of fossil stomach oil (mumiyo), guano, and minerogenic material. Here we evaluate mumiyo deposits from the inland mountain ranges of central Dronning Maud Land as high-resolution archives for paleoenvironmental reconstructions in Antarctica. Investigation of internal structures and chemical composition shows that the lamination reflects progressive sedimentation, despite the irregular outer morphology of the deposits. Detailed radiocarbon analysis demonstrates that stratigraphies are intact: C-14 ages become successively younger upwards in the deposits. Fatty acid and n-alcohol composition was determined on samples from eight mumiyo deposits. Dominance of low molecular weight compounds (C-14 to C-18) points to a dietary signal; however, the relatively low proportions of unsaturated compounds compared to fresh stomach oils indicates some postdepositional degradation. We found marine diatoms in the mumiyo, which potentially provide a proxy for sea ice conditions in the foraging habitat of the petrels. Age ranges of the investigated deposits suggest occupation of the analyzed sites by snow petrels from 17 ka to > 58 ka. Changes in deposition rates point to higher occupation frequency in Petermann Range from 46 to 42 ka compared to the late marine isotope stage 3 and the Last Glacial Maximum. Article in Journal/Newspaper Antarc* Antarctica Dronning Maud Land East Antarctica Sea ice Snow Petrel Snow Petrels Cologne University: KUPS Dronning Maud Land East Antarctica Guano ENVELOPE(141.604,141.604,-66.775,-66.775) Nivea ENVELOPE(-45.479,-45.479,-60.580,-60.580) |
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Cologne University: KUPS |
op_collection_id |
ftubkoeln |
language |
English |
topic |
ddc:no |
spellingShingle |
ddc:no Berg, S. Melles, M. Hermichen, W. -D. McClymont, E. L. Bentley, M. J. Hodgson, D. A. Kuhn, G. Evaluation of Mumiyo Deposits From East Antarctica as Archives for the Late Quaternary Environmental and Climatic History |
topic_facet |
ddc:no |
description |
Mumiyo deposits form in the vicinity of snow petrel (Pagodroma nivea) nesting sites and consist of fossil stomach oil (mumiyo), guano, and minerogenic material. Here we evaluate mumiyo deposits from the inland mountain ranges of central Dronning Maud Land as high-resolution archives for paleoenvironmental reconstructions in Antarctica. Investigation of internal structures and chemical composition shows that the lamination reflects progressive sedimentation, despite the irregular outer morphology of the deposits. Detailed radiocarbon analysis demonstrates that stratigraphies are intact: C-14 ages become successively younger upwards in the deposits. Fatty acid and n-alcohol composition was determined on samples from eight mumiyo deposits. Dominance of low molecular weight compounds (C-14 to C-18) points to a dietary signal; however, the relatively low proportions of unsaturated compounds compared to fresh stomach oils indicates some postdepositional degradation. We found marine diatoms in the mumiyo, which potentially provide a proxy for sea ice conditions in the foraging habitat of the petrels. Age ranges of the investigated deposits suggest occupation of the analyzed sites by snow petrels from 17 ka to > 58 ka. Changes in deposition rates point to higher occupation frequency in Petermann Range from 46 to 42 ka compared to the late marine isotope stage 3 and the Last Glacial Maximum. |
format |
Article in Journal/Newspaper |
author |
Berg, S. Melles, M. Hermichen, W. -D. McClymont, E. L. Bentley, M. J. Hodgson, D. A. Kuhn, G. |
author_facet |
Berg, S. Melles, M. Hermichen, W. -D. McClymont, E. L. Bentley, M. J. Hodgson, D. A. Kuhn, G. |
author_sort |
Berg, S. |
title |
Evaluation of Mumiyo Deposits From East Antarctica as Archives for the Late Quaternary Environmental and Climatic History |
title_short |
Evaluation of Mumiyo Deposits From East Antarctica as Archives for the Late Quaternary Environmental and Climatic History |
title_full |
Evaluation of Mumiyo Deposits From East Antarctica as Archives for the Late Quaternary Environmental and Climatic History |
title_fullStr |
Evaluation of Mumiyo Deposits From East Antarctica as Archives for the Late Quaternary Environmental and Climatic History |
title_full_unstemmed |
Evaluation of Mumiyo Deposits From East Antarctica as Archives for the Late Quaternary Environmental and Climatic History |
title_sort |
evaluation of mumiyo deposits from east antarctica as archives for the late quaternary environmental and climatic history |
publisher |
AMER GEOPHYSICAL UNION |
publishDate |
2019 |
url |
https://kups.ub.uni-koeln.de/13967/ |
long_lat |
ENVELOPE(141.604,141.604,-66.775,-66.775) ENVELOPE(-45.479,-45.479,-60.580,-60.580) |
geographic |
Dronning Maud Land East Antarctica Guano Nivea |
geographic_facet |
Dronning Maud Land East Antarctica Guano Nivea |
genre |
Antarc* Antarctica Dronning Maud Land East Antarctica Sea ice Snow Petrel Snow Petrels |
genre_facet |
Antarc* Antarctica Dronning Maud Land East Antarctica Sea ice Snow Petrel Snow Petrels |
op_relation |
Berg, S., Melles, M., Hermichen, W. -D., McClymont, E. L., Bentley, M. J., Hodgson, D. A. and Kuhn, G. (2019). Evaluation of Mumiyo Deposits From East Antarctica as Archives for the Late Quaternary Environmental and Climatic History. Geochem. Geophys. Geosyst., 20 (1). S. 260 - 277. WASHINGTON: AMER GEOPHYSICAL UNION. ISSN 1525-2027 |
_version_ |
1766082376568406016 |