{"created":"2023-07-27T06:26:50.480980+00:00","id":10728,"links":{},"metadata":{"_buckets":{"deposit":"25b34b0c-ec1a-4288-9f6a-28ad00e2f82f"},"_deposit":{"created_by":3,"id":"10728","owners":[3],"pid":{"revision_id":0,"type":"depid","value":"10728"},"status":"published"},"_oai":{"id":"oai:kanazawa-u.repo.nii.ac.jp:00010728","sets":["934:935:937"]},"author_link":["64227","16372","16374","15487","16373","91916"],"item_4_biblio_info_8":{"attribute_name":"書誌情報","attribute_value_mlt":[{"bibliographicIssueDates":{"bibliographicIssueDate":"1985-01-01","bibliographicIssueDateType":"Issued"},"bibliographicIssueNumber":"139","bibliographicPageEnd":"205","bibliographicPageStart":"196","bibliographicVolumeNumber":"1985","bibliographic_titles":[{"bibliographic_title":"日本古生物学會報告・紀事 新編 = Transactions and proceedings of the Paleontological Society of Japan. New series"}]}]},"item_4_creator_33":{"attribute_name":"著者別表示","attribute_type":"creator","attribute_value_mlt":[{"creatorNames":[{"creatorName":"大村, 明雄"}],"nameIdentifiers":[{},{}]},{"creatorNames":[{"creatorName":"大村, 一夫"}],"nameIdentifiers":[{}]}]},"item_4_description_21":{"attribute_name":"抄録","attribute_value_mlt":[{"subitem_description":"Twenty-one Pleistocene corals newly collected at fourteen localities on the island of Kikai were dated by the uranium-series 230Th/234U method. One of the most salient observations is that a part of the Pleistocene limestone on the island was dated to be Middle Pleistocene in age, which may be correlative with two stages of the high sea stand. The one is corresponding to the stage 7 of the marine oxygen isotopic record (Emiliani and Shackleton, 1974), approximately 200, 000 years B.P., and the other may be correlative to the stage 9 (or older one), 250, 000 years or more B.P. From the distribution of corals assigned to more than 250, 000 years and the lithology of limestone including those corals, the very shallow environment where hermatypic corals could grow up is inferred to have spread at that time over the area having a diameter of at least 6.5 km. Namely, the initial coral reef settled directly onto the Pliocene basement (Somachi Formation; Nakagawa, 1969) might be a fairly extensive table reef and the limestone deposited as such a reef is nowadays composed the basal part of Late Pleistocene limestone. The other new uranium-series dates also are shown in the present paper. We point out, based on these new 230Th/234U dates, that the geologic history itemized by Konishi et al. (1970) should be modified, although it is not necessarily required to change principally the articles concerning the history since the past 130, 000 years. 琉球列島喜界島に分布する更新統石灰岩(Hanzawa, 1935, のRiukiu Limestone)から, 新しく230Th/234U法によって放射年代を求めた。ここで報告する年代値は, ほとんどが, これまで放射年代が知られていない地点で採集した7属(Favia, Goniastrea, Porites, Montipora, Favites, Galaxea, Montastrea)・合計21個の礁性サンゴ化石から得たものである。その結果として, 喜界島の更新統の一部は, 更新世中期における2回の高海水準期に形成されたことが明らかになった。一つは, おおよそ20万年前のEmiliani and Shackleton (1974)のoxygen isotopic stage 7にあたり, 他の一つは, 25万年以上前のstage9(あるいは, より以前の温暖期)に相当する。後者の年代値は, 島の各所で採集した試料から得られたが, それら採集地点の広がりとそれらサンゴ化石を含む石灰岩の岩相などから, 当時, 礁性サンゴの生育が可能な極浅海環境が, 一つの直径が少なくとも6.5kmある範囲に広がっていたと思われる。すなわち, 基盤(上部鮮新統早町層;中川, 1969)上に, はじめて形成されたサンゴ礁は, かなりの広がりをもった卓礁であった可能性もあり, 当時の礁を形成していた石灰岩は, 現在, Konishi et al.(1974)ほかの琉球石灰岩古・中および新期部層の基底部を構成していると考えられる。今回新たに得られた230Th/234Uサンゴ年代から, 以前Konishi et al.(1970)によって箇条書きにして述べられた本島の地史を, 過去13万年間の部分は基本的に変更の必要はないものの, 一部修正しなければならないことを指摘する。","subitem_description_type":"Abstract"}]},"item_4_publisher_17":{"attribute_name":"出版者","attribute_value_mlt":[{"subitem_publisher":"日本古生物学会 = Palaeontological Society of Japan"}]},"item_4_relation_12":{"attribute_name":"DOI","attribute_value_mlt":[{"subitem_relation_type":"isIdenticalTo","subitem_relation_type_id":{"subitem_relation_type_id_text":"https://doi.org/10.14825/prpsj1951.1985.139_196","subitem_relation_type_select":"DOI"}}]},"item_4_relation_28":{"attribute_name":"関連URI","attribute_value_mlt":[{"subitem_relation_type_id":{"subitem_relation_type_id_text":"https://www.jstage.jst.go.jp/browse/prpsj1951","subitem_relation_type_select":"URI"}},{"subitem_relation_type_id":{"subitem_relation_type_id_text":"http://www.palaeo-soc-japan.jp/","subitem_relation_type_select":"URI"}}]},"item_4_rights_23":{"attribute_name":"権利","attribute_value_mlt":[{"subitem_rights":"Copyright © The Palaeontological Society of Japan"}]},"item_4_source_id_11":{"attribute_name":"NCID","attribute_value_mlt":[{"subitem_source_identifier":"AA00867896","subitem_source_identifier_type":"NCID"}]},"item_4_source_id_9":{"attribute_name":"ISSN","attribute_value_mlt":[{"subitem_source_identifier":"0031-0204","subitem_source_identifier_type":"ISSN"}]},"item_4_text_2":{"attribute_name":"その他のタイトル","attribute_value_mlt":[{"subitem_text_value":"801. 喜界島に分布する更新統石灰岩産サンゴのウラン系列年代に関する新資料"}]},"item_4_version_type_25":{"attribute_name":"著者版フラグ","attribute_value_mlt":[{"subitem_version_resource":"http://purl.org/coar/version/c_970fb48d4fbd8a85","subitem_version_type":"VoR"}]},"item_creator":{"attribute_name":"著者","attribute_type":"creator","attribute_value_mlt":[{"creatorNames":[{"creatorName":"Omura, Akio"}],"nameIdentifiers":[{},{},{}]},{"creatorNames":[{"creatorName":"Tsuji, Yoshihiro"}],"nameIdentifiers":[{}]},{"creatorNames":[{"creatorName":"Ohmura, Kazuo"}],"nameIdentifiers":[{}]},{"creatorNames":[{"creatorName":"Sakuramoto, Yuji"}],"nameIdentifiers":[{}]}]},"item_files":{"attribute_name":"ファイル情報","attribute_type":"file","attribute_value_mlt":[{"accessrole":"open_date","date":[{"dateType":"Available","dateValue":"2017-10-03"}],"displaytype":"detail","filename":"SC-PR-OMURA-A-196.pdf","filesize":[{"value":"1.0 MB"}],"format":"application/pdf","licensetype":"license_note","mimetype":"application/pdf","url":{"label":"SC-PR-OMURA-A-196.pdf","url":"https://kanazawa-u.repo.nii.ac.jp/record/10728/files/SC-PR-OMURA-A-196.pdf"},"version_id":"f5e3bbe1-b5cc-4dae-ac4f-95268dc5bb7b"}]},"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":"journal article","resourceuri":"http://purl.org/coar/resource_type/c_6501"}]},"item_title":"New data on Uranium-series ages of hermatypic corals from the Pleistocene limestone on Kikai, Ryukyu Islands","item_titles":{"attribute_name":"タイトル","attribute_value_mlt":[{"subitem_title":"New data on Uranium-series ages of hermatypic corals from the Pleistocene limestone on Kikai, Ryukyu Islands"}]},"item_type_id":"4","owner":"3","path":["937"],"pubdate":{"attribute_name":"公開日","attribute_value":"2017-10-03"},"publish_date":"2017-10-03","publish_status":"0","recid":"10728","relation_version_is_last":true,"title":["New data on Uranium-series ages of hermatypic corals from the Pleistocene limestone on Kikai, Ryukyu Islands"],"weko_creator_id":"3","weko_shared_id":3},"updated":"2023-07-27T10:42:54.361167+00:00"}