{"created":"2023-07-25T11:03:07.563426+00:00","id":5947,"links":{},"metadata":{"_buckets":{"deposit":"6da47421-a29f-43aa-ae5c-994849a4185a"},"_deposit":{"created_by":4,"id":"5947","owners":[4],"pid":{"revision_id":0,"type":"depid","value":"5947"},"status":"published"},"_oai":{"id":"oai:nipr.repo.nii.ac.jp:00005947","sets":["1259:1260:1264:773:776"]},"author_link":["44021","44020","44023","9869","44022"],"item_1_biblio_info_14":{"attribute_name":"書誌情報","attribute_value_mlt":[{"bibliographicIssueDates":{"bibliographicIssueDate":"1999-03","bibliographicIssueDateType":"Issued"},"bibliographicPageEnd":"107","bibliographicPageStart":"94","bibliographicVolumeNumber":"12","bibliographic_titles":[{"bibliographic_title":"Antarctic meteorite research"}]}]},"item_1_creator_8":{"attribute_name":"著者名(英)","attribute_type":"creator","attribute_value_mlt":[{"creatorNames":[{"creatorName":"Welten,Kees C.","creatorNameLang":"en"}],"nameIdentifiers":[{}]},{"creatorNames":[{"creatorName":"Nishiizumi,Kunihiko","creatorNameLang":"en"}],"nameIdentifiers":[{}]},{"creatorNames":[{"creatorName":"Caffee,Marc W.","creatorNameLang":"en"}],"nameIdentifiers":[{}]},{"creatorNames":[{"creatorName":"Schafer,Joerg","creatorNameLang":"en"}],"nameIdentifiers":[{}]},{"creatorNames":[{"creatorName":"Wieler,Rainer","creatorNameLang":"en"}],"nameIdentifiers":[{}]}]},"item_1_description_1":{"attribute_name":"ページ属性","attribute_value_mlt":[{"subitem_description":"P(論文)","subitem_description_type":"Other"}]},"item_1_description_12":{"attribute_name":"抄録(英)","attribute_value_mlt":[{"subitem_description":"We measured the isotopic compositions and concentrations of He, Ne and Ar as well as the concentrations of cosmogenic ^<10>Be, ^<26>Al and ^<36>Cl in 26 H-chondrites and 1 L-chondrite from a meteorite stranding area near the Frontier Mountain Range, East Antarctica. Based on the radionuclide concentrations and the noble gas signatures we conclude the 26 H-chondrite samples represent at least 13 different falls. The exposure ages of most H-chondrites are in the range of 4-10 million years (My). This age range encompasses the well-established exposure age peak at &acd;7 My and an additional feature at &acd;4 My. We determined the terrestrial ages on the basis of the ^<36>Cl concentration as well as using the relation between the ^<36>Cl/^<10>Be ratio and the ^<10>Be concentration. This relation also corrects for shielding effects and reduces the uncertainty in the age by &acd;25% compared to simple ^<36>Cl terrestrial ages. About 40% of the meteorites are older than 100 thousand years (ky), but none are older than 200ky. The relatively short terrestrial ages suggest that Frontier Mountain is a young meteorite stranding area. This seems to be supported by the bedrock exposure history, which shows a recent surface exposure&le;70ky.","subitem_description_type":"Other"}]},"item_1_identifier_registration":{"attribute_name":"ID登録","attribute_value_mlt":[{"subitem_identifier_reg_text":"10.15094/00005947","subitem_identifier_reg_type":"JaLC"}]},"item_1_publisher_22":{"attribute_name":"出版者","attribute_value_mlt":[{"subitem_publisher":"National Institute of Polar Research"}]},"item_1_source_id_13":{"attribute_name":"雑誌書誌ID","attribute_value_mlt":[{"subitem_source_identifier":"AA11182426","subitem_source_identifier_type":"NCID"}]},"item_1_text_10":{"attribute_name":"著者所属(英)","attribute_value_mlt":[{"subitem_text_language":"en","subitem_text_value":"Space Sciences Laboratory, University of California/Space Sciences Laboratory, University of California/Geosciences and Environmental Technologies and Institute of Geophysics and Planetary Physics, Lawrence Livermore National Laboratory/ETH Zurich, Isotope Geochemistry/ETH Zurich, Isotope Geochemistry"}]},"item_files":{"attribute_name":"ファイル情報","attribute_type":"file","attribute_value_mlt":[{"accessrole":"open_date","date":[{"dateType":"Available","dateValue":"1999-03-01"}],"displaytype":"detail","filename":"KJ00000040939.pdf","filesize":[{"value":"1.3 MB"}],"format":"application/pdf","licensetype":"license_6","mimetype":"application/pdf","url":{"label":"KJ00000040939","url":"https://nipr.repo.nii.ac.jp/record/5947/files/KJ00000040939.pdf"},"version_id":"4a2d93f3-1ea9-416a-a1bb-cadb8e1fa46b"}]},"item_language":{"attribute_name":"言語","attribute_value_mlt":[{"subitem_language":"eng"}]},"item_resource_type":{"attribute_name":"資源タイプ","attribute_value_mlt":[{"resourcetype":"departmental bulletin paper","resourceuri":"http://purl.org/coar/resource_type/c_6501"}]},"item_title":"Terrestrial ages and exposure ages of Antarctic H-chondrites from Frontier Mountain, North Victoria Land","item_titles":{"attribute_name":"タイトル","attribute_value_mlt":[{"subitem_title":"Terrestrial ages and exposure ages of Antarctic H-chondrites from Frontier Mountain, North Victoria Land"}]},"item_type_id":"1","owner":"4","path":["776"],"pubdate":{"attribute_name":"公開日","attribute_value":"1999-03-01"},"publish_date":"1999-03-01","publish_status":"0","recid":"5947","relation_version_is_last":true,"title":["Terrestrial ages and exposure ages of Antarctic H-chondrites from Frontier Mountain, North Victoria Land"],"weko_creator_id":"4","weko_shared_id":4},"updated":"2023-07-25T12:08:19.183963+00:00"}