14 C Age Corrections in Antarctic Lake Sediments Inferred from Geochemistry
Sediment from Lake Boeckella, Antarctic Peninsula, is richer in Ca, Cd, Cu, P, Sr and Zn than that of six other lakes in the area. The elements originate from Adélie penguin ( Pygoscelis adeliae ) guano on the lake shores. Changing Cu and P concentrations in the lake sediment are used as a proxy for...
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1994
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Online Access: | http://dx.doi.org/10.1017/s0033822200040480 https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0033822200040480 |
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crcambridgeupr:10.1017/s0033822200040480 2024-03-03T08:38:31+00:00 14 C Age Corrections in Antarctic Lake Sediments Inferred from Geochemistry Zale, Rolf 1994 http://dx.doi.org/10.1017/s0033822200040480 https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0033822200040480 en eng Cambridge University Press (CUP) https://www.cambridge.org/core/terms Radiocarbon volume 36, issue 2, page 173-185 ISSN 0033-8222 1945-5755 General Earth and Planetary Sciences Archeology journal-article 1994 crcambridgeupr https://doi.org/10.1017/s0033822200040480 2024-02-08T08:27:54Z Sediment from Lake Boeckella, Antarctic Peninsula, is richer in Ca, Cd, Cu, P, Sr and Zn than that of six other lakes in the area. The elements originate from Adélie penguin ( Pygoscelis adeliae ) guano on the lake shores. Changing Cu and P concentrations in the lake sediment are used as a proxy for penguin influence on the lake sediment from ca. 5850 bp to present. A 14 C dating model suggests that the 14 C correction factor in the lake sediments depends on the penguin proxy, the apparent age of the penguin guano and the amount of particulate carbon originating from the carbon-bearing shales in the watershed. Glacial meltwater and dissolved carbonates do not contain enough “old” carbon to contribute significantly to the correction factor. Ages corrected with the 14 C dating model agree with the depth vs. age curve based on independently 14 C-dated tephra horizons. The reservoir effect has been constant since at least 5800 bp, implying long-term stability of the currents and water masses in the area. The existing chronology for Lake Boeckella has been recalculated. The period of glacial advance, previously thought to have culminated at 5000 bp, is now thought to have culminated at 4700 bp; deglaciation of the area is thought to have occurred at 6300 bp instead of 8680 bp. Article in Journal/Newspaper Antarc* Antarctic Antarctic Peninsula Pygoscelis adeliae Cambridge University Press Antarctic Antarctic Peninsula Guano ENVELOPE(141.604,141.604,-66.775,-66.775) Boeckella ENVELOPE(-56.999,-56.999,-63.404,-63.404) Lake Boeckella ENVELOPE(-57.000,-57.000,-63.400,-63.400) Radiocarbon 36 2 173 185 |
institution |
Open Polar |
collection |
Cambridge University Press |
op_collection_id |
crcambridgeupr |
language |
English |
topic |
General Earth and Planetary Sciences Archeology |
spellingShingle |
General Earth and Planetary Sciences Archeology Zale, Rolf 14 C Age Corrections in Antarctic Lake Sediments Inferred from Geochemistry |
topic_facet |
General Earth and Planetary Sciences Archeology |
description |
Sediment from Lake Boeckella, Antarctic Peninsula, is richer in Ca, Cd, Cu, P, Sr and Zn than that of six other lakes in the area. The elements originate from Adélie penguin ( Pygoscelis adeliae ) guano on the lake shores. Changing Cu and P concentrations in the lake sediment are used as a proxy for penguin influence on the lake sediment from ca. 5850 bp to present. A 14 C dating model suggests that the 14 C correction factor in the lake sediments depends on the penguin proxy, the apparent age of the penguin guano and the amount of particulate carbon originating from the carbon-bearing shales in the watershed. Glacial meltwater and dissolved carbonates do not contain enough “old” carbon to contribute significantly to the correction factor. Ages corrected with the 14 C dating model agree with the depth vs. age curve based on independently 14 C-dated tephra horizons. The reservoir effect has been constant since at least 5800 bp, implying long-term stability of the currents and water masses in the area. The existing chronology for Lake Boeckella has been recalculated. The period of glacial advance, previously thought to have culminated at 5000 bp, is now thought to have culminated at 4700 bp; deglaciation of the area is thought to have occurred at 6300 bp instead of 8680 bp. |
format |
Article in Journal/Newspaper |
author |
Zale, Rolf |
author_facet |
Zale, Rolf |
author_sort |
Zale, Rolf |
title |
14 C Age Corrections in Antarctic Lake Sediments Inferred from Geochemistry |
title_short |
14 C Age Corrections in Antarctic Lake Sediments Inferred from Geochemistry |
title_full |
14 C Age Corrections in Antarctic Lake Sediments Inferred from Geochemistry |
title_fullStr |
14 C Age Corrections in Antarctic Lake Sediments Inferred from Geochemistry |
title_full_unstemmed |
14 C Age Corrections in Antarctic Lake Sediments Inferred from Geochemistry |
title_sort |
14 c age corrections in antarctic lake sediments inferred from geochemistry |
publisher |
Cambridge University Press (CUP) |
publishDate |
1994 |
url |
http://dx.doi.org/10.1017/s0033822200040480 https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0033822200040480 |
long_lat |
ENVELOPE(141.604,141.604,-66.775,-66.775) ENVELOPE(-56.999,-56.999,-63.404,-63.404) ENVELOPE(-57.000,-57.000,-63.400,-63.400) |
geographic |
Antarctic Antarctic Peninsula Guano Boeckella Lake Boeckella |
geographic_facet |
Antarctic Antarctic Peninsula Guano Boeckella Lake Boeckella |
genre |
Antarc* Antarctic Antarctic Peninsula Pygoscelis adeliae |
genre_facet |
Antarc* Antarctic Antarctic Peninsula Pygoscelis adeliae |
op_source |
Radiocarbon volume 36, issue 2, page 173-185 ISSN 0033-8222 1945-5755 |
op_rights |
https://www.cambridge.org/core/terms |
op_doi |
https://doi.org/10.1017/s0033822200040480 |
container_title |
Radiocarbon |
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36 |
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2 |
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173 |
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185 |
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1792506914197733376 |