Issues in radiocarbon and U-series dating of corals from the last glacial period.
Radiocarbon calibration beyond the extent of tree-ring records depends on U-series dating of fossil corals or speleothem, both of which can provide independent calendar ages. Less direct methods rely on layer counting and comparison with other well-dated records. In spite of considerable effort to p...
Published in: | Quaternary Geochronology |
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Language: | English |
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Online Access: | http://apo.ansto.gov.au/dspace/handle/10238/1409 https://doi.org/10.1016/j.quageo.2007.11.004 |
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ftansto:oai:apo-prod.ansto.gov.au:10238/1409 2023-05-15T17:36:35+02:00 Issues in radiocarbon and U-series dating of corals from the last glacial period. Esat, TM Yokoyama, Y 2008-08 http://apo.ansto.gov.au/dspace/handle/10238/1409 https://doi.org/10.1016/j.quageo.2007.11.004 en eng Elsevier Esat, T. M., & Yokoyama, Y. (2008). Issues in radiocarbon and U-series dating of corals from the last glacial period. Quaternary Geochronology, 3(3), 244-252. doi:10.1016/j.quageo.2007.11.004 1871-1014 http://dx.doi.org/10.1016/j.quageo.2007.11.004 http://apo.ansto.gov.au/dspace/handle/10238/1409 Corals Isotope dating Age estimation Fossils Papua New Guinea Climatic change Journal Article 2008 ftansto https://doi.org/10.1016/j.quageo.2007.11.004 2020-09-07T22:28:27Z Radiocarbon calibration beyond the extent of tree-ring records depends on U-series dating of fossil corals or speleothem, both of which can provide independent calendar ages. Less direct methods rely on layer counting and comparison with other well-dated records. In spite of considerable effort to provide a reliable radiocarbon calibration curve beyond 25,000 years, the majority of the data show large atmospheric radiocarbon peaks which are inconsistent both in magnitude and timing between different determinations. The results of the most recent work [Chiu, T.-C., Fairbanks, R.G., Mortlock, R.A., Bloom, A.L., 2005. Extending the radiocarbon calibration beyond 26,000 years before present using fossil corals. Quaternary Science Reviews 24 (16-17), 1797-1808], from Araki Island fossil corals, indicate a monotonic variation from about 33 to 49 ka, with no radiocarbon peaks, but with some gaps in the data. The difference between this and previous results, from fossil corals, has been attributed to selection of better-quality samples and rigorous analytical methods. However, previous results from Huon Peninsula [Yokoyama, Y., Esat, T.M., Lambeck, K., Fifield, L.K., 2000. Last ice age millennial scale climate changes recorded in Huon Peninsula corals. Radiocarbon 42 (3), 383-401; Cutler, K.B., Gray, S.C., Burr, G.S., Edwards, R.L., Taylor, F.W., Cabioch, G., Beck, J.W., Cheng, H., Moore, J., 2004. Radiocarbon calibration and comparison to 50 kyr BP with paired C-14 and Th-230 dating of corals from Vanuatu and Papua New Guinea. Radiocarbon 46 (3), 1127-1160] show radiocarbon peaks exclusively located within the gaps in the Araki data. The timing of the gaps are not random, but appear to be related to severe climate and sea-level variations associated with Heinrich events initiated in the North Atlantic. We propose that the Huon and Araki data sets are complementary rather than exclusive and that the absence of coral growth at Araki Island during Heinrich events presumably reflect local adverse conditions for coral growth. © 2007, Elsevier Ltd. Article in Journal/Newspaper North Atlantic Australian Nuclear Science and Technology Organisation: ANSTO Publications Online Beck ENVELOPE(67.017,67.017,-71.033,-71.033) Cutler ENVELOPE(-60.981,-60.981,-62.612,-62.612) Fairbanks Huon ENVELOPE(-57.998,-57.998,-63.367,-63.367) Quaternary Geochronology 3 3 244 252 |
institution |
Open Polar |
collection |
Australian Nuclear Science and Technology Organisation: ANSTO Publications Online |
op_collection_id |
ftansto |
language |
English |
topic |
Corals Isotope dating Age estimation Fossils Papua New Guinea Climatic change |
spellingShingle |
Corals Isotope dating Age estimation Fossils Papua New Guinea Climatic change Esat, TM Yokoyama, Y Issues in radiocarbon and U-series dating of corals from the last glacial period. |
topic_facet |
Corals Isotope dating Age estimation Fossils Papua New Guinea Climatic change |
description |
Radiocarbon calibration beyond the extent of tree-ring records depends on U-series dating of fossil corals or speleothem, both of which can provide independent calendar ages. Less direct methods rely on layer counting and comparison with other well-dated records. In spite of considerable effort to provide a reliable radiocarbon calibration curve beyond 25,000 years, the majority of the data show large atmospheric radiocarbon peaks which are inconsistent both in magnitude and timing between different determinations. The results of the most recent work [Chiu, T.-C., Fairbanks, R.G., Mortlock, R.A., Bloom, A.L., 2005. Extending the radiocarbon calibration beyond 26,000 years before present using fossil corals. Quaternary Science Reviews 24 (16-17), 1797-1808], from Araki Island fossil corals, indicate a monotonic variation from about 33 to 49 ka, with no radiocarbon peaks, but with some gaps in the data. The difference between this and previous results, from fossil corals, has been attributed to selection of better-quality samples and rigorous analytical methods. However, previous results from Huon Peninsula [Yokoyama, Y., Esat, T.M., Lambeck, K., Fifield, L.K., 2000. Last ice age millennial scale climate changes recorded in Huon Peninsula corals. Radiocarbon 42 (3), 383-401; Cutler, K.B., Gray, S.C., Burr, G.S., Edwards, R.L., Taylor, F.W., Cabioch, G., Beck, J.W., Cheng, H., Moore, J., 2004. Radiocarbon calibration and comparison to 50 kyr BP with paired C-14 and Th-230 dating of corals from Vanuatu and Papua New Guinea. Radiocarbon 46 (3), 1127-1160] show radiocarbon peaks exclusively located within the gaps in the Araki data. The timing of the gaps are not random, but appear to be related to severe climate and sea-level variations associated with Heinrich events initiated in the North Atlantic. We propose that the Huon and Araki data sets are complementary rather than exclusive and that the absence of coral growth at Araki Island during Heinrich events presumably reflect local adverse conditions for coral growth. © 2007, Elsevier Ltd. |
format |
Article in Journal/Newspaper |
author |
Esat, TM Yokoyama, Y |
author_facet |
Esat, TM Yokoyama, Y |
author_sort |
Esat, TM |
title |
Issues in radiocarbon and U-series dating of corals from the last glacial period. |
title_short |
Issues in radiocarbon and U-series dating of corals from the last glacial period. |
title_full |
Issues in radiocarbon and U-series dating of corals from the last glacial period. |
title_fullStr |
Issues in radiocarbon and U-series dating of corals from the last glacial period. |
title_full_unstemmed |
Issues in radiocarbon and U-series dating of corals from the last glacial period. |
title_sort |
issues in radiocarbon and u-series dating of corals from the last glacial period. |
publisher |
Elsevier |
publishDate |
2008 |
url |
http://apo.ansto.gov.au/dspace/handle/10238/1409 https://doi.org/10.1016/j.quageo.2007.11.004 |
long_lat |
ENVELOPE(67.017,67.017,-71.033,-71.033) ENVELOPE(-60.981,-60.981,-62.612,-62.612) ENVELOPE(-57.998,-57.998,-63.367,-63.367) |
geographic |
Beck Cutler Fairbanks Huon |
geographic_facet |
Beck Cutler Fairbanks Huon |
genre |
North Atlantic |
genre_facet |
North Atlantic |
op_relation |
Esat, T. M., & Yokoyama, Y. (2008). Issues in radiocarbon and U-series dating of corals from the last glacial period. Quaternary Geochronology, 3(3), 244-252. doi:10.1016/j.quageo.2007.11.004 1871-1014 http://dx.doi.org/10.1016/j.quageo.2007.11.004 http://apo.ansto.gov.au/dspace/handle/10238/1409 |
op_doi |
https://doi.org/10.1016/j.quageo.2007.11.004 |
container_title |
Quaternary Geochronology |
container_volume |
3 |
container_issue |
3 |
container_start_page |
244 |
op_container_end_page |
252 |
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1766136115024101376 |