{"_buckets": {"deposit": "085f7a26-219f-474e-a726-377a7cfd0470"}, "_deposit": {"id": "4271", "owners": [1], "pid": {"revision_id": 0, "type": "depid", "value": "4271"}, "status": "published"}, "_oai": {"id": "oai:nied-repo.bosai.go.jp:00004271", "sets": []}, "author_link": [], "item_10001_biblio_info_7": {"attribute_name": "書誌情報", "attribute_value_mlt": [{"bibliographicIssueDates": {"bibliographicIssueDate": "2016-09"}, "bibliographicPageEnd": "273", "bibliographicPageStart": "263", "bibliographicVolumeNumber": "450", "bibliographic_titles": [{"bibliographic_title": "EARTH AND PLANETARY SCIENCE LETTERS", "bibliographic_titleLang": "en"}]}]}, "item_10001_description_5": {"attribute_name": "抄録", "attribute_value_mlt": [{"subitem_description": "Patagonia, in the Southern Andes, is one of the few locations where interactions between the oceanic and continental lithosphere can be studied due to subduction of an active spreading ridge beneath the continent. In order to characterize the noble gas composition of Patagonian subcontinental lithospheric mantle (SCLM), we present the first noble gas data alongside new lithophile (Sr-Nd-Pb) isotopic data for mantle xenoliths from Pali-Aike Volcanic Field and Gobernador Gregores, Southern Patagonia. Based on noble gas isotopic compositions, Pali-Aike mantle xenoliths represent intrinsic SCLM with higher (U + Th + K)/(He-3, Ne-22, Ar-36) ratios than the mid-ocean ridge basalt (MORB) source. This reservoir shows slightly radiogenic helium (He-3/He-4 = 6.84-6.90 R-A), coupled with a strongly nucleogenic neon signature (mantle source Ne-21/Ne-22 = 0.085-0.094). The Ar-40/Ar-36 ratios vary from a near-atmospheric ratio of 510 up to 17700, with mantle source Ar-40/Ar-36 between 31100(-6800)(+9400) and 54000(-9600)(+14200). In addition, the He-3/Ne-22 ratios for the local SCLM endmember, at 12.03 +/- 0.15 to 13.66 +/- 0.37, are higher than depleted MORBs, at He-3/Ne-22 = 8.31-9.75. Although asthenospheric mantle upwelling through the Patagonian slab window would result in a MORB-like metasomatism after collision of the South Chile Ridge with the Chile trench ca. 14 Ma, this mantle reservoir could have remained unhomogenized after rapid passage and northward migration of the Chile Triple Junction. The mantle endmember xenon isotopic ratios of Pali-Aike mantle xenoliths, which is first defined for any SCLM-derived samples, show values indistinguishable from the MORB source (Xe-129/Xe-132 = 1.0833(-0.0053)(+0.0216) and Xe-136/Xe-132 = 0.3761(-0.0034)(+0.0246)). The noble gas component observed in Gobernador Gregores mantle xenoliths is characterized by isotopic compositions in the MORB range in terms of helium (He-3/He-4 = 7.17-7.37 R-A), but with slightly nucleogenic neon (mantle source Ne-21/Ne-22 = 0.065-0.079). We suggest that this MORB-like metasomatism was capable of overprinting the noble gas composition of Gobernador Gregores due to recent metasomatism of the SCLM because of asthenospheric mantle upwelling in response to opening of the Patagonian slab window. The Ar-40/Ar-36 ratios vary from a near-atmospheric ratio of 380 up to 6560, with mantle source Ar-40/Ar-36 between 81004(-700)(+1400) and 17700(-3100)(+4400). The lower Ar-40/Ar-36 ratio of the Gobernador Gregores mantle source, compared with that of Pali-Aike, attests that the Patagonia SCLM was affected significantly by atmospheric contamination associated with the recycled oceanic lithosphere. (C) 2016 Elsevier B.V. All rights reserved.", "subitem_description_language": "en", "subitem_description_type": "Other"}]}, "item_10001_publisher_8": {"attribute_name": "出版者", "attribute_value_mlt": [{"subitem_publisher": "ELSEVIER SCIENCE BV", "subitem_publisher_language": "en"}]}, "item_10001_relation_14": {"attribute_name": "DOI", "attribute_value_mlt": [{"subitem_relation_type_id": {"subitem_relation_type_id_text": "10.1016/j.epsl.2016.06.034"}}]}, "item_10001_source_id_9": {"attribute_name": "ISSN", "attribute_value_mlt": [{"subitem_source_identifier": "1385-013X", "subitem_source_identifier_type": "EISSN"}]}, "item_creator": {"attribute_name": "著者", "attribute_type": "creator", "attribute_value_mlt": [{"creatorNames": [{"creatorName": "Tiago Jalowitzki", "creatorNameLang": "en"}]}, {"creatorNames": [{"creatorName": "Hirochika Sumino", "creatorNameLang": "en"}]}, {"creatorNames": [{"creatorName": "Rommulo V. Conceicao", "creatorNameLang": "en"}]}, {"creatorNames": [{"creatorName": "Yuji Orihashi", "creatorNameLang": "en"}]}, {"creatorNames": [{"creatorName": "Keisuke Nagao", "creatorNameLang": "en"}]}, {"creatorNames": [{"creatorName": "Gustavo W. Bertotto", "creatorNameLang": "en"}]}, {"creatorNames": [{"creatorName": "Eduardo Balbinot", "creatorNameLang": "en"}]}, {"creatorNames": [{"creatorName": "Manuel E. Schilling", "creatorNameLang": "en"}]}, {"creatorNames": [{"creatorName": "Fernanda Gervasoni", "creatorNameLang": "en"}]}]}, "item_language": {"attribute_name": "言語", "attribute_value_mlt": [{"subitem_language": "eng"}]}, "item_title": "Noble gas composition of subcontinental lithospheric mantle: An extensively degassed reservoir beneath Southern Patagonia", "item_titles": {"attribute_name": "タイトル", "attribute_value_mlt": [{"subitem_title": "Noble gas composition of subcontinental lithospheric mantle: An extensively degassed reservoir beneath Southern Patagonia", "subitem_title_language": "en"}]}, "item_type_id": "40001", "owner": "1", "path": ["1670839190650"], "permalink_uri": "https://nied-repo.bosai.go.jp/records/4271", "pubdate": {"attribute_name": "PubDate", "attribute_value": "2023-03-30"}, "publish_date": "2023-03-30", "publish_status": "0", "recid": "4271", "relation": {}, "relation_version_is_last": true, "title": ["Noble gas composition of subcontinental lithospheric mantle: An extensively degassed reservoir beneath Southern Patagonia"], "weko_shared_id": -1}