Ar-Ar ages of iceberg-rafted debris from Scotia Sea IODP Site 382-U1538
Ar-Ar ages of 58 individual hornblendes and micas picked from a discrete iceberg-rafted layer deposited ~1.2 Ma at IODP U1538. The layer was recovered 310.79–310.82 meters below sea floor in Hole U1538A-36X-3W. All hornblende and mica (mostly biotite) were handpicked from the 250-μm to 1-mm size fra...
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Format: | Dataset |
Language: | English |
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PANGAEA
2022
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Online Access: | https://doi.pangaea.de/10.1594/PANGAEA.946719 https://doi.org/10.1594/PANGAEA.946719 |
id |
ftpangaea:oai:pangaea.de:doi:10.1594/PANGAEA.946719 |
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record_format |
openpolar |
institution |
Open Polar |
collection |
PANGAEA - Data Publisher for Earth & Environmental Science |
op_collection_id |
ftpangaea |
language |
English |
topic |
382-U1538A 40Ar/39Ar geochronology Age mineral standard deviation Antarctic Ice Sheet Ar-Ar Argon-39 Argon-40 radiogenic Calcium/Potassium ratio Cascadia CDRILL Chlorine/Potassium ratio Comment Core drilling DSDP/ODP/IODP sample designation Exp328 Iceberg Alley Ice Rafted Debris Integrated Ocean Drilling Program / International Ocean Discovery Program IODP IODP Expedition 382 Joides Resolution Laser fusion Mineral name Pirie Basin Run Sample code/label Scotia Sea Site U1538 Southern Ocean West Antarctic Ice Sheet |
spellingShingle |
382-U1538A 40Ar/39Ar geochronology Age mineral standard deviation Antarctic Ice Sheet Ar-Ar Argon-39 Argon-40 radiogenic Calcium/Potassium ratio Cascadia CDRILL Chlorine/Potassium ratio Comment Core drilling DSDP/ODP/IODP sample designation Exp328 Iceberg Alley Ice Rafted Debris Integrated Ocean Drilling Program / International Ocean Discovery Program IODP IODP Expedition 382 Joides Resolution Laser fusion Mineral name Pirie Basin Run Sample code/label Scotia Sea Site U1538 Southern Ocean West Antarctic Ice Sheet Bailey, Ian Hemming, Sidney R Reilly, Brendan T Ar-Ar ages of iceberg-rafted debris from Scotia Sea IODP Site 382-U1538 |
topic_facet |
382-U1538A 40Ar/39Ar geochronology Age mineral standard deviation Antarctic Ice Sheet Ar-Ar Argon-39 Argon-40 radiogenic Calcium/Potassium ratio Cascadia CDRILL Chlorine/Potassium ratio Comment Core drilling DSDP/ODP/IODP sample designation Exp328 Iceberg Alley Ice Rafted Debris Integrated Ocean Drilling Program / International Ocean Discovery Program IODP IODP Expedition 382 Joides Resolution Laser fusion Mineral name Pirie Basin Run Sample code/label Scotia Sea Site U1538 Southern Ocean West Antarctic Ice Sheet |
description |
Ar-Ar ages of 58 individual hornblendes and micas picked from a discrete iceberg-rafted layer deposited ~1.2 Ma at IODP U1538. The layer was recovered 310.79–310.82 meters below sea floor in Hole U1538A-36X-3W. All hornblende and mica (mostly biotite) were handpicked from the 250-μm to 1-mm size fraction, with additional mica picked from the 63–250-μm size fraction. Hornblende, biotite and standards were irradiated at the Cd-lined in-core facility (CLICIT) at the Oregon State reactor. 40Ar/39Ar ages were obtained using single-step CO2 laser fusion at the Lamont Doherty Earth Observatory argon geochronology lab (AGES: Argon Geochronology for the Earth Sciences) to release argon, followed by cleanup with Zr-Ar getters heated at 2-amps. Extracted and cleaned gases were measured on a VG5400 noble gas mass spectrometer in peak hopping mode on an analogue multiplier, using the program Massspec. Nuclear interference corrections used values for OSU from Renne et al. (1998), and data were also corrected for background and mass discrimination using measured blanks and air pipettes. J values used to calculate ages were based on co-irradiated Fish Canyon sanidine standard (28.201±0.046 Ma; Kuiper et al. (2008), with decay constants from Min et al. (2000)). |
format |
Dataset |
author |
Bailey, Ian Hemming, Sidney R Reilly, Brendan T |
author_facet |
Bailey, Ian Hemming, Sidney R Reilly, Brendan T |
author_sort |
Bailey, Ian |
title |
Ar-Ar ages of iceberg-rafted debris from Scotia Sea IODP Site 382-U1538 |
title_short |
Ar-Ar ages of iceberg-rafted debris from Scotia Sea IODP Site 382-U1538 |
title_full |
Ar-Ar ages of iceberg-rafted debris from Scotia Sea IODP Site 382-U1538 |
title_fullStr |
Ar-Ar ages of iceberg-rafted debris from Scotia Sea IODP Site 382-U1538 |
title_full_unstemmed |
Ar-Ar ages of iceberg-rafted debris from Scotia Sea IODP Site 382-U1538 |
title_sort |
ar-ar ages of iceberg-rafted debris from scotia sea iodp site 382-u1538 |
publisher |
PANGAEA |
publishDate |
2022 |
url |
https://doi.pangaea.de/10.1594/PANGAEA.946719 https://doi.org/10.1594/PANGAEA.946719 |
op_coverage |
LATITUDE: -57.442080 * LONGITUDE: -43.357818 * DATE/TIME START: 2019-05-04T05:45:00 * DATE/TIME END: 2019-05-10T19:30:00 * MINIMUM ELEVATION: -3130.6 m * MAXIMUM ELEVATION: -3130.6 m |
long_lat |
ENVELOPE(9.698,9.698,63.505,63.505) ENVELOPE(-44.633,-44.633,-60.700,-60.700) ENVELOPE(-43.357818,-43.357818,-57.442080,-57.442080) |
geographic |
Antarctic Southern Ocean Scotia Sea West Antarctic Ice Sheet Renne Pirie |
geographic_facet |
Antarctic Southern Ocean Scotia Sea West Antarctic Ice Sheet Renne Pirie |
genre |
Antarc* Antarctic Ice Sheet Iceberg* Scotia Sea Southern Ocean renne |
genre_facet |
Antarc* Antarctic Ice Sheet Iceberg* Scotia Sea Southern Ocean renne |
op_relation |
Bailey, Ian; Hemming, Sidney R; Reilly, Brendan T; Rollinson, Gavyn; Williams, Trevor J; Weber, Michael E; Raymo, Maureen E; Peck, Victoria L; Ronge, Thomas A; Brachfeld, Stefanie A; O'Connell, Suzanne B; Tauxe, Lisa; Warnock, Jonathan; Armbrecht, Linda; Cardillo, Fabricio G; Du, Zhiheng; Fauth, Gerson; García, Marga M; Glueder, Anna; Guitard, Michelle; Gutjahr, Marcus; Hernández-Almeida, Iván; Hoem, Frida; Hwang, Ji-Hwan; Iizuka, Mutsumi; Kato, Yuji; Kenlee, Bridget; Martos, Yasmina M; Pérez, Lara F; Seki, Osamu; Tripathi, Shubham; Zheng, Xufeng (2022): Episodes of early Pleistocene West Antarctic Ice Sheet retreat recorded by Iceberg Alley sediments. Paleoceanography and Paleoclimatology, 37(7), https://doi.org/10.1029/2022PA004433 Kuiper, Klaudia F; Deino, Alan L; Hilgen, Frederik J; Krijgsman, Wout; Renne, Paul; Wijbrans, J R (2008): Synchronizing rock clocks of earth history. Science, 320(5875), 500-504, https://doi.org/10.1126/science.1154339 Min, Kyoungwon; Mundil, Roland; Renne, Paul; Ludwig, Kenneth R (2000): A test for systematic errors in 40Ar/39Ar geochronology through comparison with U/Pb analysis of a 1.1-Ga rhyolite. Geochimica et Cosmochimica Acta, 64(1), 73-98, https://doi.org/10.1016/S0016-7037(99)00204-5 https://doi.pangaea.de/10.1594/PANGAEA.946719 https://doi.org/10.1594/PANGAEA.946719 |
op_rights |
CC-BY-4.0: Creative Commons Attribution 4.0 International Access constraints: unrestricted info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.1594/PANGAEA.94671910.1029/2022PA00443310.1126/science.115433910.1016/S0016-7037(99)00204-5 |
_version_ |
1802650648966070272 |
spelling |
ftpangaea:oai:pangaea.de:doi:10.1594/PANGAEA.946719 2024-06-23T07:47:04+00:00 Ar-Ar ages of iceberg-rafted debris from Scotia Sea IODP Site 382-U1538 Bailey, Ian Hemming, Sidney R Reilly, Brendan T LATITUDE: -57.442080 * LONGITUDE: -43.357818 * DATE/TIME START: 2019-05-04T05:45:00 * DATE/TIME END: 2019-05-10T19:30:00 * MINIMUM ELEVATION: -3130.6 m * MAXIMUM ELEVATION: -3130.6 m 2022 text/tab-separated-values, 592 data points https://doi.pangaea.de/10.1594/PANGAEA.946719 https://doi.org/10.1594/PANGAEA.946719 en eng PANGAEA Bailey, Ian; Hemming, Sidney R; Reilly, Brendan T; Rollinson, Gavyn; Williams, Trevor J; Weber, Michael E; Raymo, Maureen E; Peck, Victoria L; Ronge, Thomas A; Brachfeld, Stefanie A; O'Connell, Suzanne B; Tauxe, Lisa; Warnock, Jonathan; Armbrecht, Linda; Cardillo, Fabricio G; Du, Zhiheng; Fauth, Gerson; García, Marga M; Glueder, Anna; Guitard, Michelle; Gutjahr, Marcus; Hernández-Almeida, Iván; Hoem, Frida; Hwang, Ji-Hwan; Iizuka, Mutsumi; Kato, Yuji; Kenlee, Bridget; Martos, Yasmina M; Pérez, Lara F; Seki, Osamu; Tripathi, Shubham; Zheng, Xufeng (2022): Episodes of early Pleistocene West Antarctic Ice Sheet retreat recorded by Iceberg Alley sediments. Paleoceanography and Paleoclimatology, 37(7), https://doi.org/10.1029/2022PA004433 Kuiper, Klaudia F; Deino, Alan L; Hilgen, Frederik J; Krijgsman, Wout; Renne, Paul; Wijbrans, J R (2008): Synchronizing rock clocks of earth history. Science, 320(5875), 500-504, https://doi.org/10.1126/science.1154339 Min, Kyoungwon; Mundil, Roland; Renne, Paul; Ludwig, Kenneth R (2000): A test for systematic errors in 40Ar/39Ar geochronology through comparison with U/Pb analysis of a 1.1-Ga rhyolite. Geochimica et Cosmochimica Acta, 64(1), 73-98, https://doi.org/10.1016/S0016-7037(99)00204-5 https://doi.pangaea.de/10.1594/PANGAEA.946719 https://doi.org/10.1594/PANGAEA.946719 CC-BY-4.0: Creative Commons Attribution 4.0 International Access constraints: unrestricted info:eu-repo/semantics/openAccess 382-U1538A 40Ar/39Ar geochronology Age mineral standard deviation Antarctic Ice Sheet Ar-Ar Argon-39 Argon-40 radiogenic Calcium/Potassium ratio Cascadia CDRILL Chlorine/Potassium ratio Comment Core drilling DSDP/ODP/IODP sample designation Exp328 Iceberg Alley Ice Rafted Debris Integrated Ocean Drilling Program / International Ocean Discovery Program IODP IODP Expedition 382 Joides Resolution Laser fusion Mineral name Pirie Basin Run Sample code/label Scotia Sea Site U1538 Southern Ocean West Antarctic Ice Sheet Dataset 2022 ftpangaea https://doi.org/10.1594/PANGAEA.94671910.1029/2022PA00443310.1126/science.115433910.1016/S0016-7037(99)00204-5 2024-06-12T14:17:12Z Ar-Ar ages of 58 individual hornblendes and micas picked from a discrete iceberg-rafted layer deposited ~1.2 Ma at IODP U1538. The layer was recovered 310.79–310.82 meters below sea floor in Hole U1538A-36X-3W. All hornblende and mica (mostly biotite) were handpicked from the 250-μm to 1-mm size fraction, with additional mica picked from the 63–250-μm size fraction. Hornblende, biotite and standards were irradiated at the Cd-lined in-core facility (CLICIT) at the Oregon State reactor. 40Ar/39Ar ages were obtained using single-step CO2 laser fusion at the Lamont Doherty Earth Observatory argon geochronology lab (AGES: Argon Geochronology for the Earth Sciences) to release argon, followed by cleanup with Zr-Ar getters heated at 2-amps. Extracted and cleaned gases were measured on a VG5400 noble gas mass spectrometer in peak hopping mode on an analogue multiplier, using the program Massspec. Nuclear interference corrections used values for OSU from Renne et al. (1998), and data were also corrected for background and mass discrimination using measured blanks and air pipettes. J values used to calculate ages were based on co-irradiated Fish Canyon sanidine standard (28.201±0.046 Ma; Kuiper et al. (2008), with decay constants from Min et al. (2000)). Dataset Antarc* Antarctic Ice Sheet Iceberg* Scotia Sea Southern Ocean renne PANGAEA - Data Publisher for Earth & Environmental Science Antarctic Southern Ocean Scotia Sea West Antarctic Ice Sheet Renne ENVELOPE(9.698,9.698,63.505,63.505) Pirie ENVELOPE(-44.633,-44.633,-60.700,-60.700) ENVELOPE(-43.357818,-43.357818,-57.442080,-57.442080) |