Summary of 40Ar/39Ar results from core sediment CRP-1 (Table 1) ...
40Ar/39Ar dating of volcanic clasts and pumice provide constraints for depositional ages of the CRP-1 core. Laser-fusion analyses of anorthoclase phenocrysts from pumice clasts concentrated near 116 mbsf suggest a depositional age of 18.40 ± 1.12 Ma (± 2). Results from anorthoclase phenocrysts and g...
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ftdatacite:10.1594/pangaea.54737 2024-09-15T17:47:25+00:00 Summary of 40Ar/39Ar results from core sediment CRP-1 (Table 1) ... McIntosh, W C McIntosh, Bill 1998 text/tab-separated-values https://dx.doi.org/10.1594/pangaea.54737 https://doi.pangaea.de/10.1594/PANGAEA.54737 en eng PANGAEA Creative Commons Attribution 3.0 Unported https://creativecommons.org/licenses/by/3.0/legalcode cc-by-3.0 DEPTH, sediment/rock Depth, top/min Depth, bottom/max Sample code/label Lithology/composition/facies Comment Yield Age, dated Age, dated standard deviation Core wireline system Visual description Age, 40Ar/39Ar Argon-Argon CRP-1 Sampling/drilling ice Cape Roberts Project CRP dataset Supplementary Dataset Dataset 1998 ftdatacite https://doi.org/10.1594/pangaea.54737 2024-08-01T11:02:40Z 40Ar/39Ar dating of volcanic clasts and pumice provide constraints for depositional ages of the CRP-1 core. Laser-fusion analyses of anorthoclase phenocrysts from pumice clasts concentrated near 116 mbsf suggest a depositional age of 18.40 ± 1.12 Ma (± 2). Results from anorthoclase phenocrysts and groundmass concentrates from five clasts of reworked lava provide maximum depositional ages of 19.73 ± 0.86 Ma to 17.15 ± 0.80 Ma for the 61 to 114 mbsf interval of CRP-1. The most precise age determination is 19.32 ± 0.14 Ma for the trachytic clasts near 105 mbsf. Taken together, the 40Ar/39Ar results from the lower part of CRP-1 suggest that none of the sediment above 116 mbsf is older than 19.5 Ma, and the data are most compatible with rapid accumulation of the 61 to 116 mbsf segment of CRP-1 near 18 Ma. 40AR/39Ar results from a basaltic clast from the carbonate-rich layer at 33 mbsf provide a maximum depositional age of 1.2 ± 0.1 Ma for this horizon. ... : Supplement to: McIntosh, W C (1998): 40Ar/39Ar geochronology of volcanic clasts and pumice in CRP-1 core, Cape Roberts, Antarctica. Terra Antartica, 5(3), 683-690 ... Dataset Antarc* Antarctica antartic* DataCite |
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language |
English |
topic |
DEPTH, sediment/rock Depth, top/min Depth, bottom/max Sample code/label Lithology/composition/facies Comment Yield Age, dated Age, dated standard deviation Core wireline system Visual description Age, 40Ar/39Ar Argon-Argon CRP-1 Sampling/drilling ice Cape Roberts Project CRP |
spellingShingle |
DEPTH, sediment/rock Depth, top/min Depth, bottom/max Sample code/label Lithology/composition/facies Comment Yield Age, dated Age, dated standard deviation Core wireline system Visual description Age, 40Ar/39Ar Argon-Argon CRP-1 Sampling/drilling ice Cape Roberts Project CRP McIntosh, W C McIntosh, Bill Summary of 40Ar/39Ar results from core sediment CRP-1 (Table 1) ... |
topic_facet |
DEPTH, sediment/rock Depth, top/min Depth, bottom/max Sample code/label Lithology/composition/facies Comment Yield Age, dated Age, dated standard deviation Core wireline system Visual description Age, 40Ar/39Ar Argon-Argon CRP-1 Sampling/drilling ice Cape Roberts Project CRP |
description |
40Ar/39Ar dating of volcanic clasts and pumice provide constraints for depositional ages of the CRP-1 core. Laser-fusion analyses of anorthoclase phenocrysts from pumice clasts concentrated near 116 mbsf suggest a depositional age of 18.40 ± 1.12 Ma (± 2). Results from anorthoclase phenocrysts and groundmass concentrates from five clasts of reworked lava provide maximum depositional ages of 19.73 ± 0.86 Ma to 17.15 ± 0.80 Ma for the 61 to 114 mbsf interval of CRP-1. The most precise age determination is 19.32 ± 0.14 Ma for the trachytic clasts near 105 mbsf. Taken together, the 40Ar/39Ar results from the lower part of CRP-1 suggest that none of the sediment above 116 mbsf is older than 19.5 Ma, and the data are most compatible with rapid accumulation of the 61 to 116 mbsf segment of CRP-1 near 18 Ma. 40AR/39Ar results from a basaltic clast from the carbonate-rich layer at 33 mbsf provide a maximum depositional age of 1.2 ± 0.1 Ma for this horizon. ... : Supplement to: McIntosh, W C (1998): 40Ar/39Ar geochronology of volcanic clasts and pumice in CRP-1 core, Cape Roberts, Antarctica. Terra Antartica, 5(3), 683-690 ... |
format |
Dataset |
author |
McIntosh, W C McIntosh, Bill |
author_facet |
McIntosh, W C McIntosh, Bill |
author_sort |
McIntosh, W C |
title |
Summary of 40Ar/39Ar results from core sediment CRP-1 (Table 1) ... |
title_short |
Summary of 40Ar/39Ar results from core sediment CRP-1 (Table 1) ... |
title_full |
Summary of 40Ar/39Ar results from core sediment CRP-1 (Table 1) ... |
title_fullStr |
Summary of 40Ar/39Ar results from core sediment CRP-1 (Table 1) ... |
title_full_unstemmed |
Summary of 40Ar/39Ar results from core sediment CRP-1 (Table 1) ... |
title_sort |
summary of 40ar/39ar results from core sediment crp-1 (table 1) ... |
publisher |
PANGAEA |
publishDate |
1998 |
url |
https://dx.doi.org/10.1594/pangaea.54737 https://doi.pangaea.de/10.1594/PANGAEA.54737 |
genre |
Antarc* Antarctica antartic* |
genre_facet |
Antarc* Antarctica antartic* |
op_rights |
Creative Commons Attribution 3.0 Unported https://creativecommons.org/licenses/by/3.0/legalcode cc-by-3.0 |
op_doi |
https://doi.org/10.1594/pangaea.54737 |
_version_ |
1810496726331555840 |