Cosmogenic 10 Be and 26 Al ages of Holocene moraines in southern Norway I: testing the method and confirmation of the date of the Erdalen Event ( c . 10 ka) at its type-site
Abstract: Cosmogenic nuclide dating ( 10 Be and 26 Al) is applied to boulders on two moraine ridges at the type-site of the early-Holocene Erdalen Event, southern Norway, dated previously using radiocarbon. Quartz-rich rock samples yielded 10 Be age estimates between 9.8 ± 1.2 and 10.1 ± 1.1 ka (ext...
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crsagepubl:10.1177/0959683608096585 2024-05-12T08:04:04+00:00 Cosmogenic 10 Be and 26 Al ages of Holocene moraines in southern Norway I: testing the method and confirmation of the date of the Erdalen Event ( c . 10 ka) at its type-site Matthews, John A. Shakesby, Richard A. Schnabel, Christoph Freeman, Stewart 2008 http://dx.doi.org/10.1177/0959683608096585 http://journals.sagepub.com/doi/pdf/10.1177/0959683608096585 en eng SAGE Publications http://journals.sagepub.com/page/policies/text-and-data-mining-license The Holocene volume 18, issue 8, page 1155-1164 ISSN 0959-6836 1477-0911 Paleontology Earth-Surface Processes Ecology Archeology Global and Planetary Change journal-article 2008 crsagepubl https://doi.org/10.1177/0959683608096585 2024-04-18T08:33:47Z Abstract: Cosmogenic nuclide dating ( 10 Be and 26 Al) is applied to boulders on two moraine ridges at the type-site of the early-Holocene Erdalen Event, southern Norway, dated previously using radiocarbon. Quartz-rich rock samples yielded 10 Be age estimates between 9.8 ± 1.2 and 10.1 ± 1.1 ka (external uncertainties, ± 1σ), with an average of 9.95 ka. These age estimates are statistically indistinguishable from the independent radiocarbon age estimate. 26 Al age estimates, which ranged from 9.4 ± 1.1 to 11.2 ± 1.3 ka and averaged 10.1 ka, provided useful corroboration of the 10 Be results. Although current levels of precision and accuracy are insufficient to distinguish between the ages of younger inner and older outer moraines, the results demonstrate the potential of the method at suitable sites where radiocarbon dating is not possible. Several environmental factors, including effective glacial erosion, stability of moraine slopes, snow cover of sufficiently shallow depth and short duration, and the absence of colluvial contamination, appear to have been instrumental in the success of applying the method at this site. The results confirm the timing and extent of the Erdalen Event in southern Norway with implications for Holocene glacier chronology and millennial-scale climatic variability. Article in Journal/Newspaper glacier SAGE Publications Norway The Holocene 18 8 1155 1164 |
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English |
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Paleontology Earth-Surface Processes Ecology Archeology Global and Planetary Change |
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Paleontology Earth-Surface Processes Ecology Archeology Global and Planetary Change Matthews, John A. Shakesby, Richard A. Schnabel, Christoph Freeman, Stewart Cosmogenic 10 Be and 26 Al ages of Holocene moraines in southern Norway I: testing the method and confirmation of the date of the Erdalen Event ( c . 10 ka) at its type-site |
topic_facet |
Paleontology Earth-Surface Processes Ecology Archeology Global and Planetary Change |
description |
Abstract: Cosmogenic nuclide dating ( 10 Be and 26 Al) is applied to boulders on two moraine ridges at the type-site of the early-Holocene Erdalen Event, southern Norway, dated previously using radiocarbon. Quartz-rich rock samples yielded 10 Be age estimates between 9.8 ± 1.2 and 10.1 ± 1.1 ka (external uncertainties, ± 1σ), with an average of 9.95 ka. These age estimates are statistically indistinguishable from the independent radiocarbon age estimate. 26 Al age estimates, which ranged from 9.4 ± 1.1 to 11.2 ± 1.3 ka and averaged 10.1 ka, provided useful corroboration of the 10 Be results. Although current levels of precision and accuracy are insufficient to distinguish between the ages of younger inner and older outer moraines, the results demonstrate the potential of the method at suitable sites where radiocarbon dating is not possible. Several environmental factors, including effective glacial erosion, stability of moraine slopes, snow cover of sufficiently shallow depth and short duration, and the absence of colluvial contamination, appear to have been instrumental in the success of applying the method at this site. The results confirm the timing and extent of the Erdalen Event in southern Norway with implications for Holocene glacier chronology and millennial-scale climatic variability. |
format |
Article in Journal/Newspaper |
author |
Matthews, John A. Shakesby, Richard A. Schnabel, Christoph Freeman, Stewart |
author_facet |
Matthews, John A. Shakesby, Richard A. Schnabel, Christoph Freeman, Stewart |
author_sort |
Matthews, John A. |
title |
Cosmogenic 10 Be and 26 Al ages of Holocene moraines in southern Norway I: testing the method and confirmation of the date of the Erdalen Event ( c . 10 ka) at its type-site |
title_short |
Cosmogenic 10 Be and 26 Al ages of Holocene moraines in southern Norway I: testing the method and confirmation of the date of the Erdalen Event ( c . 10 ka) at its type-site |
title_full |
Cosmogenic 10 Be and 26 Al ages of Holocene moraines in southern Norway I: testing the method and confirmation of the date of the Erdalen Event ( c . 10 ka) at its type-site |
title_fullStr |
Cosmogenic 10 Be and 26 Al ages of Holocene moraines in southern Norway I: testing the method and confirmation of the date of the Erdalen Event ( c . 10 ka) at its type-site |
title_full_unstemmed |
Cosmogenic 10 Be and 26 Al ages of Holocene moraines in southern Norway I: testing the method and confirmation of the date of the Erdalen Event ( c . 10 ka) at its type-site |
title_sort |
cosmogenic 10 be and 26 al ages of holocene moraines in southern norway i: testing the method and confirmation of the date of the erdalen event ( c . 10 ka) at its type-site |
publisher |
SAGE Publications |
publishDate |
2008 |
url |
http://dx.doi.org/10.1177/0959683608096585 http://journals.sagepub.com/doi/pdf/10.1177/0959683608096585 |
geographic |
Norway |
geographic_facet |
Norway |
genre |
glacier |
genre_facet |
glacier |
op_source |
The Holocene volume 18, issue 8, page 1155-1164 ISSN 0959-6836 1477-0911 |
op_rights |
http://journals.sagepub.com/page/policies/text-and-data-mining-license |
op_doi |
https://doi.org/10.1177/0959683608096585 |
container_title |
The Holocene |
container_volume |
18 |
container_issue |
8 |
container_start_page |
1155 |
op_container_end_page |
1164 |
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1798846190597439488 |