14C terrestrial ages of nine Antarctic meteorites using CO and CO2 temperature extractions
As a continuation of the work reported in R. P. BEUKENS et al. (Proc. NIPR Symp. Antarct. Meteorites, 1,224,1988), a suite of Yamato and Trans-Antarctic Mountains meteorites have been analyzed for their ^<14>C content, to give an estimate of their terrestrial age. Further information on the sa...
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Iso Trace Laboratory, University of Toronto/Department of Mineralogical Sciences and Geology, Yamaguchi University/Iso Trace Laboratory, University of Toronto/Iso Trace Laboratory, University of Toronto
1993
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ftnipr:oai:nipr.repo.nii.ac.jp:00004622 2023-05-15T13:49:02+02:00 14C terrestrial ages of nine Antarctic meteorites using CO and CO2 temperature extractions Cresswell,Richard G. Miura,Yasunori Beukens,Roelf P. Rucklidge,John C. 1993-05 https://nipr.repo.nii.ac.jp/?action=repository_uri&item_id=4622 http://id.nii.ac.jp/1291/00004622/ https://nipr.repo.nii.ac.jp/?action=repository_action_common_download&item_id=4622&item_no=1&attribute_id=18&file_no=1 en eng Iso Trace Laboratory, University of Toronto/Department of Mineralogical Sciences and Geology, Yamaguchi University/Iso Trace Laboratory, University of Toronto/Iso Trace Laboratory, University of Toronto National Institute of Polar Research https://nipr.repo.nii.ac.jp/?action=repository_uri&item_id=4622 http://id.nii.ac.jp/1291/00004622/ AA10784627 Proceedings of the NIPR Symposium on Antarctic Meteorites, 6, 381-390(1993-05) https://nipr.repo.nii.ac.jp/?action=repository_action_common_download&item_id=4622&item_no=1&attribute_id=18&file_no=1 Departmental Bulletin Paper P(論文) 1993 ftnipr 2023-02-04T20:06:16Z As a continuation of the work reported in R. P. BEUKENS et al. (Proc. NIPR Symp. Antarct. Meteorites, 1,224,1988), a suite of Yamato and Trans-Antarctic Mountains meteorites have been analyzed for their ^<14>C content, to give an estimate of their terrestrial age. Further information on the samples' terrestrial history may be obtained from analysis of separate carbon species evolved at different temperatures. We report on data obtained from CO and CO_2 separations from a low temperature (500℃ to 900℃) and high temperature (≈1600℃) fraction from each sample. Three Allan Hills meteorites, ALH-77232 (H4), ALH-78112 (L6) and ALH-78130 (L6), give terrestrial ages >29000 years, and probably represent limit ages due to in situ production. Three other Trans-Antarctic meteorites, BTN-78002 (L6), MET-78028 (L6) and RKP-78002 (H4), give finite ^<14>C ages between 15000 and 27000 years. Three Yamato meteorites, Y-8011 (L6), Y-81132 (H5) and Y-82095 (L3), give ages between 16000 and 22000 years. The low temperature components indicate that recent weathering and atmospheric exchange has taken place for at least four (and possibly six) of the meteorites; ALH-78112,ALH-78130 and Y-81132 have low temperature activities that suggest an earlier exposure and weathering. Report Antarc* Antarctic National Institute of Polar Research Repository, Japan Allan Hills ENVELOPE(159.667,159.667,-76.717,-76.717) Antarctic Yamato ENVELOPE(35.583,35.583,-71.417,-71.417) |
institution |
Open Polar |
collection |
National Institute of Polar Research Repository, Japan |
op_collection_id |
ftnipr |
language |
English |
description |
As a continuation of the work reported in R. P. BEUKENS et al. (Proc. NIPR Symp. Antarct. Meteorites, 1,224,1988), a suite of Yamato and Trans-Antarctic Mountains meteorites have been analyzed for their ^<14>C content, to give an estimate of their terrestrial age. Further information on the samples' terrestrial history may be obtained from analysis of separate carbon species evolved at different temperatures. We report on data obtained from CO and CO_2 separations from a low temperature (500℃ to 900℃) and high temperature (≈1600℃) fraction from each sample. Three Allan Hills meteorites, ALH-77232 (H4), ALH-78112 (L6) and ALH-78130 (L6), give terrestrial ages >29000 years, and probably represent limit ages due to in situ production. Three other Trans-Antarctic meteorites, BTN-78002 (L6), MET-78028 (L6) and RKP-78002 (H4), give finite ^<14>C ages between 15000 and 27000 years. Three Yamato meteorites, Y-8011 (L6), Y-81132 (H5) and Y-82095 (L3), give ages between 16000 and 22000 years. The low temperature components indicate that recent weathering and atmospheric exchange has taken place for at least four (and possibly six) of the meteorites; ALH-78112,ALH-78130 and Y-81132 have low temperature activities that suggest an earlier exposure and weathering. |
format |
Report |
author |
Cresswell,Richard G. Miura,Yasunori Beukens,Roelf P. Rucklidge,John C. |
spellingShingle |
Cresswell,Richard G. Miura,Yasunori Beukens,Roelf P. Rucklidge,John C. 14C terrestrial ages of nine Antarctic meteorites using CO and CO2 temperature extractions |
author_facet |
Cresswell,Richard G. Miura,Yasunori Beukens,Roelf P. Rucklidge,John C. |
author_sort |
Cresswell,Richard G. |
title |
14C terrestrial ages of nine Antarctic meteorites using CO and CO2 temperature extractions |
title_short |
14C terrestrial ages of nine Antarctic meteorites using CO and CO2 temperature extractions |
title_full |
14C terrestrial ages of nine Antarctic meteorites using CO and CO2 temperature extractions |
title_fullStr |
14C terrestrial ages of nine Antarctic meteorites using CO and CO2 temperature extractions |
title_full_unstemmed |
14C terrestrial ages of nine Antarctic meteorites using CO and CO2 temperature extractions |
title_sort |
14c terrestrial ages of nine antarctic meteorites using co and co2 temperature extractions |
publisher |
Iso Trace Laboratory, University of Toronto/Department of Mineralogical Sciences and Geology, Yamaguchi University/Iso Trace Laboratory, University of Toronto/Iso Trace Laboratory, University of Toronto |
publishDate |
1993 |
url |
https://nipr.repo.nii.ac.jp/?action=repository_uri&item_id=4622 http://id.nii.ac.jp/1291/00004622/ https://nipr.repo.nii.ac.jp/?action=repository_action_common_download&item_id=4622&item_no=1&attribute_id=18&file_no=1 |
long_lat |
ENVELOPE(159.667,159.667,-76.717,-76.717) ENVELOPE(35.583,35.583,-71.417,-71.417) |
geographic |
Allan Hills Antarctic Yamato |
geographic_facet |
Allan Hills Antarctic Yamato |
genre |
Antarc* Antarctic |
genre_facet |
Antarc* Antarctic |
op_relation |
https://nipr.repo.nii.ac.jp/?action=repository_uri&item_id=4622 http://id.nii.ac.jp/1291/00004622/ AA10784627 Proceedings of the NIPR Symposium on Antarctic Meteorites, 6, 381-390(1993-05) https://nipr.repo.nii.ac.jp/?action=repository_action_common_download&item_id=4622&item_no=1&attribute_id=18&file_no=1 |
_version_ |
1766250632239382528 |