Noble gas measurement in individual micrometeorites using laser gas-extraction system
All noble gases in 12 individual Antarctic micrometeorites, series F96C and F96D, taken from a water tank at the Dome Fuji Station, were measured by using Nd-YAG CW laser-extraction system. According to the results of light noble gases, the micrometeorites can be separated into two groups, "gas...
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ftnipr:oai:nipr.repo.nii.ac.jp:00005986 2023-05-15T13:46:39+02:00 Noble gas measurement in individual micrometeorites using laser gas-extraction system Osawa,Takahito Nagao,Keisuke Nakamura,Tomoki Takaoka,Nobuo 2000-03 https://nipr.repo.nii.ac.jp/?action=repository_uri&item_id=5986 http://id.nii.ac.jp/1291/00005986/ https://nipr.repo.nii.ac.jp/?action=repository_action_common_download&item_id=5986&item_no=1&attribute_id=18&file_no=1 en eng Laboratory for Earthquake Chemistry, Graduate School of Science, University of Tokyo/Laboratory for Earthquake Chemistry, Graduate School of Science, University of Tokyo/Earth and Planetary Sciences, Graduate School of Science, Kyushu University/Earth and Planetary Sciences, Graduate School of Science, Kyushu University National Institute of Polar Research https://nipr.repo.nii.ac.jp/?action=repository_uri&item_id=5986 http://id.nii.ac.jp/1291/00005986/ AA11182426 Antarctic meteorite research, 13, 322-341(2000-03) https://nipr.repo.nii.ac.jp/?action=repository_action_common_download&item_id=5986&item_no=1&attribute_id=18&file_no=1 Departmental Bulletin Paper P(論文) 2000 ftnipr 2023-02-25T20:13:36Z All noble gases in 12 individual Antarctic micrometeorites, series F96C and F96D, taken from a water tank at the Dome Fuji Station, were measured by using Nd-YAG CW laser-extraction system. According to the results of light noble gases, the micrometeorites can be separated into two groups, "gas-rich" and "gas-poor". Samples in the gas-rich group have SEP-like ^3He/^4He ratios and Ne isotopic ratios between SEP- and Solar wind-Ne, which are consistent with previous reports on micrometeorites or IDPs. On the other hand, samples in the gas-poor group have very low ^3He/^4He ratios and ^<20>Ne/^<22>Ne ratios lower than the atmospheric values. The ^<40>Ar/^<36>Ar ratios are also separated into two groups, i. e., samples with lower ^<40>Ar/^<36>Ar belong to the gas-rich group. Cosmogenic noble gases were undetected in all the samples and cosmic-ray exposure ages may be shorter than 4.5Ma considering error limits of Ne data. Heavy noble gas elemental compositions are chondritic. There was no correlation between the concentration of volatile elements, sulfur, and that of He and Ne. Report Antarc* Antarctic National Institute of Polar Research Repository, Japan Antarctic Dome Fuji ENVELOPE(39.700,39.700,-77.317,-77.317) Dome Fuji Station ENVELOPE(39.703,39.703,-77.317,-77.317) |
institution |
Open Polar |
collection |
National Institute of Polar Research Repository, Japan |
op_collection_id |
ftnipr |
language |
English |
description |
All noble gases in 12 individual Antarctic micrometeorites, series F96C and F96D, taken from a water tank at the Dome Fuji Station, were measured by using Nd-YAG CW laser-extraction system. According to the results of light noble gases, the micrometeorites can be separated into two groups, "gas-rich" and "gas-poor". Samples in the gas-rich group have SEP-like ^3He/^4He ratios and Ne isotopic ratios between SEP- and Solar wind-Ne, which are consistent with previous reports on micrometeorites or IDPs. On the other hand, samples in the gas-poor group have very low ^3He/^4He ratios and ^<20>Ne/^<22>Ne ratios lower than the atmospheric values. The ^<40>Ar/^<36>Ar ratios are also separated into two groups, i. e., samples with lower ^<40>Ar/^<36>Ar belong to the gas-rich group. Cosmogenic noble gases were undetected in all the samples and cosmic-ray exposure ages may be shorter than 4.5Ma considering error limits of Ne data. Heavy noble gas elemental compositions are chondritic. There was no correlation between the concentration of volatile elements, sulfur, and that of He and Ne. |
format |
Report |
author |
Osawa,Takahito Nagao,Keisuke Nakamura,Tomoki Takaoka,Nobuo |
spellingShingle |
Osawa,Takahito Nagao,Keisuke Nakamura,Tomoki Takaoka,Nobuo Noble gas measurement in individual micrometeorites using laser gas-extraction system |
author_facet |
Osawa,Takahito Nagao,Keisuke Nakamura,Tomoki Takaoka,Nobuo |
author_sort |
Osawa,Takahito |
title |
Noble gas measurement in individual micrometeorites using laser gas-extraction system |
title_short |
Noble gas measurement in individual micrometeorites using laser gas-extraction system |
title_full |
Noble gas measurement in individual micrometeorites using laser gas-extraction system |
title_fullStr |
Noble gas measurement in individual micrometeorites using laser gas-extraction system |
title_full_unstemmed |
Noble gas measurement in individual micrometeorites using laser gas-extraction system |
title_sort |
noble gas measurement in individual micrometeorites using laser gas-extraction system |
publisher |
Laboratory for Earthquake Chemistry, Graduate School of Science, University of Tokyo/Laboratory for Earthquake Chemistry, Graduate School of Science, University of Tokyo/Earth and Planetary Sciences, Graduate School of Science, Kyushu University/Earth and Planetary Sciences, Graduate School of Science, Kyushu University |
publishDate |
2000 |
url |
https://nipr.repo.nii.ac.jp/?action=repository_uri&item_id=5986 http://id.nii.ac.jp/1291/00005986/ https://nipr.repo.nii.ac.jp/?action=repository_action_common_download&item_id=5986&item_no=1&attribute_id=18&file_no=1 |
long_lat |
ENVELOPE(39.700,39.700,-77.317,-77.317) ENVELOPE(39.703,39.703,-77.317,-77.317) |
geographic |
Antarctic Dome Fuji Dome Fuji Station |
geographic_facet |
Antarctic Dome Fuji Dome Fuji Station |
genre |
Antarc* Antarctic |
genre_facet |
Antarc* Antarctic |
op_relation |
https://nipr.repo.nii.ac.jp/?action=repository_uri&item_id=5986 http://id.nii.ac.jp/1291/00005986/ AA11182426 Antarctic meteorite research, 13, 322-341(2000-03) https://nipr.repo.nii.ac.jp/?action=repository_action_common_download&item_id=5986&item_no=1&attribute_id=18&file_no=1 |
_version_ |
1766244991555862528 |