{"@context":{"@vocab":"https://cir.nii.ac.jp/schema/1.0/","rdfs":"http://www.w3.org/2000/01/rdf-schema#","dc":"http://purl.org/dc/elements/1.1/","dcterms":"http://purl.org/dc/terms/","foaf":"http://xmlns.com/foaf/0.1/","prism":"http://prismstandard.org/namespaces/basic/2.0/","cinii":"http://ci.nii.ac.jp/ns/1.0/","datacite":"https://schema.datacite.org/meta/kernel-4/","ndl":"http://ndl.go.jp/dcndl/terms/","jpcoar":"https://github.com/JPCOAR/schema/blob/master/2.0/"},"@id":"https://cir.nii.ac.jp/crid/1390282679281362944.json","@type":"Article","productIdentifier":[{"identifier":{"@type":"DOI","@value":"10.18940/kazan.47.5_435"}},{"identifier":{"@type":"NDL_BIB_ID","@value":"6398233"}},{"identifier":{"@type":"URI","@value":"http://id.ndl.go.jp/bib/6398233"}},{"identifier":{"@type":"URI","@value":"https://ndlsearch.ndl.go.jp/books/R000000004-I6398233"}},{"identifier":{"@type":"NAID","@value":"110003041271"}}],"dc:title":[{"@language":"ja","@value":"八ヶ岳火山列の古地磁気"},{"@language":"en","@value":"Paleomagnetic Properties of the Yatsugatake Volcanic Chain, Central Japan"},{"@language":"ja-Kana","@value":"ヤツガタケ カザンレツ ノ コ チジキ"}],"dc:language":"ja","description":[{"type":"abstract","notation":[{"@language":"en","@value":"Directions, intensities and stability of the natural remanent magnetization of the Yatsugatake Volcanic Chain, central Japan were measured by the conventional paleomagnetic method. We investigated about 600 samples of the volcanic rocks with ages ranging from 0.01 to 1.3 Ma together with basement rocks younger than 3 Ma collected at 130 sites covering the entire period of the Yatsugatake activity. Total 320 reliable paleomagnetic directions from 76 sites were determined using the Zijderveld diagrams for progressive alternating-field demagnetization. Paleomagnetic polarities thus obtained are correlated to the standard magnetic chrons and subchrons with the aid of K-Ar radiometric ages of rocks. Results are summarized as follows in the order of decreasing ages; (1) Kiretto andesite and Minoto porphyrite representing the earliest volcanic products have the normal polarity correlatable to a subchron older than the Jaramillo event in the Matuyama reversed polarity chron, whereas their basement (Shiga welded tuff, Yashigamine lava and Mizuochi-kannon lava) has reversed polarity. (2) Kasuga volcanics, Kyowa-bokujyo lava, Tatamiishi lava and Honmagawa lava composing the lower layers of the old Yatsugatake stage are all reversedly magnetized and correlatable to the Matuyama reversed polarity chron. (3) Most of the upper layers overlying the Kasuga volcanics have the normal polarity corresponding to the Brunhes normal polarity chron. (4) Reversed polarities are found in several lava flows of the younger volcanic stages. They appear to be records of the Blake event and the Laschamp excursion in the Brunhes chron. (5) Most of the paleomagnetic directions of the Yatsugatake samples are clockwisely deflected by approximately 10° to 15° from the present geographical north. These deflections seem to be caused by the tectonic movement of the Fossa Magna region, since similar deviations of the paleomagnetic directions are also observed in the Quaternary volcanics of the western Izu Peninsula adjacent to the Yatsugatake region."}],"abstractLicenseFlag":"disallow"}],"creator":[{"@id":"https://cir.nii.ac.jp/crid/1410001206123639426","@type":"Researcher","personIdentifier":[{"@type":"NRID","@value":"9000004596259"}],"foaf:name":[{"@language":"ja","@value":"秋元 孝敏"},{"@language":"en","@value":"AKIMOTO Takatoshi"}],"jpcoar:affiliationName":[{"@language":"en","@value":"Yachimata High School"},{"@language":"ja","@value":"千葉県立八街高等学校"}]},{"@id":"https://cir.nii.ac.jp/crid/1030285133955956226","@type":"Researcher","personIdentifier":[{"@type":"KAKEN_RESEARCHERS","@value":"30107461"},{"@type":"NRID","@value":"1000030107461"},{"@type":"NRID","@value":"9000020205696"},{"@type":"NRID","@value":"9000253255063"},{"@type":"NRID","@value":"9000007772298"},{"@type":"NRID","@value":"9000020261688"},{"@type":"NRID","@value":"9000008890821"},{"@type":"NRID","@value":"9000002496821"},{"@type":"NRID","@value":"9000020937336"},{"@type":"NRID","@value":"9000020244382"},{"@type":"NRID","@value":"9000256136363"},{"@type":"NRID","@value":"9000017459330"},{"@type":"NRID","@value":"9000005495728"},{"@type":"NRID","@value":"9000391404638"},{"@type":"NRID","@value":"9000258259984"},{"@type":"NRID","@value":"9000256135993"},{"@type":"NRID","@value":"9000255735503"},{"@type":"NRID","@value":"9000001038988"},{"@type":"NRID","@value":"9000020322136"},{"@type":"NRID","@value":"9000258259795"},{"@type":"NRID","@value":"9000391405095"},{"@type":"NRID","@value":"9000018276301"},{"@type":"NRID","@value":"9000258259956"}],"foaf:name":[{"@language":"ja","@value":"古田 俊夫"},{"@language":"en","@value":"FURUTA Toshio"}]},{"@id":"https://cir.nii.ac.jp/crid/1030003658328435972","@type":"Researcher","personIdentifier":[{"@type":"KAKEN_RESEARCHERS","@value":"10000829"},{"@type":"NRID","@value":"1000010000829"},{"@type":"NRID","@value":"9000002401307"},{"@type":"NRID","@value":"9000254150203"},{"@type":"NRID","@value":"9000254584223"},{"@type":"NRID","@value":"9000004608016"},{"@type":"NRID","@value":"9000021593222"},{"@type":"NRID","@value":"9000004598068"},{"@type":"NRID","@value":"9000254149649"},{"@type":"NRID","@value":"9000004621895"},{"@type":"NRID","@value":"9000004594470"},{"@type":"NRID","@value":"9000008123132"},{"@type":"NRID","@value":"9000002401314"},{"@type":"NRID","@value":"9000365020296"},{"@type":"NRID","@value":"9000256136730"},{"@type":"NRID","@value":"9000398128232"},{"@type":"NRID","@value":"9000254150968"},{"@type":"NRID","@value":"9000008454832"},{"@type":"NRID","@value":"9000254584234"},{"@type":"NRID","@value":"9000254150960"}],"foaf:name":[{"@language":"ja","@value":"河内 晋平"},{"@language":"en","@value":"KAWACHI Shinpei"}],"jpcoar:affiliationName":[{"@language":"en","@value":"(Ex-professor)Facalty of Education, Shinshu University"},{"@language":"ja","@value":"(元)信州大学教育学部地学教室"}]}],"publication":{"publicationIdentifier":[{"@type":"PISSN","@value":"04534360"},{"@type":"EISSN","@value":"21897182"},{"@type":"NDL_BIB_ID","@value":"000000003812"},{"@type":"ISSN","@value":"04534360"},{"@type":"LISSN","@value":"04534360"},{"@type":"NCID","@value":"AN10512786"}],"prism:publicationName":[{"@language":"en","@value":"BULLETIN OF THE VOLCANOLOGICAL SOCIETY OF JAPAN"},{"@language":"ja","@value":"火山"},{"@language":"en","@value":"BVSJ"}],"dc:publisher":[{"@language":"en","@value":"The Volcanological Society of Japan"},{"@language":"ja","@value":"特定非営利活動法人 日本火山学会"}],"prism:publicationDate":"2002","prism:volume":"47","prism:number":"5","prism:startingPage":"435","prism:endingPage":"448"},"url":[{"@id":"http://id.ndl.go.jp/bib/6398233"},{"@id":"https://ndlsearch.ndl.go.jp/books/R000000004-I6398233"}],"availableAt":"2002","relatedProduct":[{"@id":"https://cir.nii.ac.jp/crid/1360574094942253568","@type":"Article","relationType":["cites"],"jpcoar:relatedTitle":[{"@value":"Evidence for a new geomagnetic reversal from Lava flows in Idaho: Discussion of short polarity reversals in the Brunhes and late Matuyama polarity chrons"}]},{"@id":"https://cir.nii.ac.jp/crid/1362544418479233792","@type":"Article","relationType":["cites"],"jpcoar:relatedTitle":[{"@value":"Evidence that the Laschamp polarity event did not occur 13 300–30 400 years ago"}]},{"@id":"https://cir.nii.ac.jp/crid/1362544418824600064","@type":"Article","relationType":["cites"],"jpcoar:relatedTitle":[{"@value":"Late Pleistocene geomagnetic excursion in Icelandic lavas: confirmation of the Laschamp excursion"}]},{"@id":"https://cir.nii.ac.jp/crid/1363107370957273216","@type":"Article","relationType":["cites"],"jpcoar:relatedTitle":[{"@value":"Paleomagnetism and potassium argon age determinations of the Laschamp geomagnetic polarity event"}]},{"@id":"https://cir.nii.ac.jp/crid/1363670319725918720","@type":"Article","relationType":["cites"],"jpcoar:relatedTitle":[{"@value":"Geomagnetic field intensity and reversals during the past four million years"}]},{"@id":"https://cir.nii.ac.jp/crid/1390001204265801088","@type":"Article","relationType":["cites"],"jpcoar:relatedTitle":[{"@language":"ja","@value":"八ケ岳東麓野辺山原周辺の第四系"},{"@language":"en","@value":"The Quaternary deposits around the Nobeyamahara, eastern foot of the Yatsugatake Volcanic Chain, Central Japan"},{"@value":"八ケ岳東麓野辺山原周辺の第四系--とくに広瀬層群の層序と古地磁気について"},{"@language":"ja-Kana","@value":"ヤツガタケ トウロク ノベヤマ ゲンシュウヘン ノ ダイ4ケイ トクニ ヒロセ"}]},{"@id":"https://cir.nii.ac.jp/crid/1390001205543219328","@type":"Article","relationType":["cites"],"jpcoar:relatedTitle":[{"@language":"ja","@value":"第四紀後期の地磁気 excursion : 第四紀"}]},{"@id":"https://cir.nii.ac.jp/crid/1390001206236758912","@type":"Article","relationType":["cites"],"jpcoar:relatedTitle":[{"@language":"en","@value":"Ohtsukigawa debris avalanche, Yatsugatake Volcanic Chain, central Japan"},{"@value":"八ガ岳大月川岩層流"},{"@language":"ja-Kana","@value":"ヤツガタケ オオツキガワ ガンセツリュウ"}]},{"@id":"https://cir.nii.ac.jp/crid/1390001206238250368","@type":"Article","relationType":["isCitedBy"],"jpcoar:relatedTitle":[{"@language":"en","@value":"Volcanostratigraphy of the Lower Pleistocene in the northern flank of the Northern Yatsugatake volcanoes, central Japan."},{"@language":"ja","@value":"中部日本，北八ヶ岳火山北麓に分布する前期更新世火山岩類の火山層序"},{"@value":"中部日本,北八ヶ岳火山北麓に分布する前期更新世火山岩類の火山層序--北八ヶ岳～塩嶺地域における大規模マグマ活動について"},{"@language":"ja-Kana","@value":"チュウブ ニホン キタヤツガタケ カザン ホクロク ニ ブンプ スル ゼンキ コウシン セイ カザンガンルイ ノ カザンソウ ジョ キタヤツガタケ エンレイチイキ ニ オケル ダイキボ マグマ カツドウ ニ ツイテ"}]},{"@id":"https://cir.nii.ac.jp/crid/1390001206496208896","@type":"Article","relationType":["cites"],"jpcoar:relatedTitle":[{"@value":"八ケ岳北東ろくに分布する下部更新統八千穂層中の正帯磁溶岩"},{"@language":"en","@value":"A Note on the normaly magnetized Lava Flow of the Lower Pleistocene Yachiho Formation in the Northeastern Foot of the Yatsugatake Volcanic Chain, Central Japan"},{"@language":"ja-Kana","@value":"ヤツガタケ キタ トウロク ニ ブンプスル カブ コウシントウ ハッセン スイ"}]},{"@id":"https://cir.nii.ac.jp/crid/1390001206497068416","@type":"Article","relationType":["cites"],"jpcoar:relatedTitle":[{"@language":"en","@value":"Landforms in and around the South Fossa Magna and Their Tectonic Processes of Growth"},{"@value":"南部フォッサマグナに関連する地形とその成立過程"},{"@language":"ja-Kana","@value":"ナンブ フォッサマグナ ニ カンレンスル チケイ ト ソノ セイリツ カテイ"}]},{"@id":"https://cir.nii.ac.jp/crid/1390282679280538624","@type":"Article","relationType":["isCitedBy"],"jpcoar:relatedTitle":[{"@language":"ja","@value":"霧ヶ峰火山のK-Ar年代"},{"@language":"en","@value":"K-Ar Ages of the Lavas from Kirigamine Volcano, Central Japan"}]},{"@id":"https://cir.nii.ac.jp/crid/1390282679281725440","@type":"Article","relationType":["isCitedBy"],"jpcoar:relatedTitle":[{"@language":"ja","@value":"K-Ar年代測定に基づく両白山地の鮮新 : 更新世火山活動の時空分布"},{"@language":"en","@value":"Temporal-spatial variations of Plio-Pleistocene volcanic activity in the Ryohaku Mountains, central Japan : evidences from K-Ar ages."},{"@language":"ja-Kana","@value":"K Ar ネンダイ ソクテイ ニ モトズク リョウハク サンチ ノ センシン コウシンセイ カザン カツドウ ノ ジクウ ブンプ"}]},{"@id":"https://cir.nii.ac.jp/crid/1390282681213512064","@type":"Article","relationType":["isCitedBy"],"jpcoar:relatedTitle":[{"@language":"en","@value":"Reexamination of volcanic activity of Yatsugatake area, central Japan"},{"@language":"ja","@value":"中部日本，八ヶ岳地域の火山活動期の再検討"},{"@language":"ja-Kana","@value":"チュウブ ニホン ヤツガタケ チイキ ノ カザン カツドウキ ノ サイケントウ"},{"@value":"Reexamination of volcanic activity of Yabashira area, central Japan"}]},{"@id":"https://cir.nii.ac.jp/crid/1570009749911148928","@type":"Article","relationType":["cites"],"jpcoar:relatedTitle":[{"@language":"en","@value":"Geomagnetic polarity event recorded at 1.1m. y. B. P. on Cobb Mountain, Clear Lake volcanic field, California"}]},{"@id":"https://cir.nii.ac.jp/crid/1570009749911151232","@type":"Article","relationType":["cites"],"jpcoar:relatedTitle":[{"@language":"en","@value":"AC demagnetization of rocks : Analysis and results"}]},{"@id":"https://cir.nii.ac.jp/crid/1570291224887860352","@type":"Article","relationType":["cites"]},{"@id":"https://cir.nii.ac.jp/crid/1570291224887861760","@type":"Article","relationType":["cites"],"jpcoar:relatedTitle":[{"@language":"en","@value":"Lists of archeomagnetic and paleomagnetic results - 1950-1970, in Japan"}]},{"@id":"https://cir.nii.ac.jp/crid/1570572699864568576","@type":"Article","relationType":["cites"],"jpcoar:relatedTitle":[{"@language":"en","@value":"Geomagnetic reversal in Brunhes normal polarity epoch"}]},{"@id":"https://cir.nii.ac.jp/crid/1570572699864569728","@type":"Article","relationType":["cites"],"jpcoar:relatedTitle":[{"@value":"蓼科山地域の地質"}]},{"@id":"https://cir.nii.ac.jp/crid/1570572699864571392","@type":"Article","relationType":["cites"],"jpcoar:relatedTitle":[{"@value":"フィッショントラックによる第四紀産ジルコンの年代測定"}]},{"@id":"https://cir.nii.ac.jp/crid/1570854174134346240","@type":"Article","relationType":["cites"]},{"@id":"https://cir.nii.ac.jp/crid/1570854174841279232","@type":"Article","relationType":["cites"],"jpcoar:relatedTitle":[{"@value":"八ヶ岳火山列I"}]},{"@id":"https://cir.nii.ac.jp/crid/1571135649208199040","@type":"Article","relationType":["cites"],"jpcoar:relatedTitle":[{"@value":"八ヶ岳地域の地質"}]},{"@id":"https://cir.nii.ac.jp/crid/1571135649817992704","@type":"Article","relationType":["cites"],"jpcoar:relatedTitle":[{"@value":"八ヶ岳火山東北部に分布する火山岩の古地磁気学的研究"}]},{"@id":"https://cir.nii.ac.jp/crid/1571698599771411456","@type":"Article","relationType":["cites"],"jpcoar:relatedTitle":[{"@language":"en","@value":"Paleomagnetic studies on Quaternary volcanic region in Japan"}]},{"@id":"https://cir.nii.ac.jp/crid/1571698599771412992","@type":"Article","relationType":["cites"],"jpcoar:relatedTitle":[{"@language":"en","@value":"Pleistocene volcanic activities in the Fossa Magna region, central Japan - K-Ar age studies of the Yatsugatake volcanic chain-"}]},{"@id":"https://cir.nii.ac.jp/crid/1572543023962461312","@type":"Article","relationType":["cites"],"jpcoar:relatedTitle":[{"@value":"火山灰の絶対年代と第四紀後期の編年"}]},{"@id":"https://cir.nii.ac.jp/crid/1572543024701545984","@type":"Article","relationType":["cites"],"jpcoar:relatedTitle":[{"@value":"八ヶ岳 大塩火砕流(円頂丘形成期)の絶対年代"}]},{"@id":"https://cir.nii.ac.jp/crid/1572824499678255872","@type":"Article","relationType":["cites"],"jpcoar:relatedTitle":[{"@value":"八ヶ岳火山列II"}]},{"@id":"https://cir.nii.ac.jp/crid/1573105974654965760","@type":"Article","relationType":["cites"],"jpcoar:relatedTitle":[{"@language":"en","@value":"Intensity of the earth's magnetic field in Pliocene and Pleistocene"}]},{"@id":"https://cir.nii.ac.jp/crid/1573105974654969216","@type":"Article","relationType":["cites"],"jpcoar:relatedTitle":[{"@value":"乗鞍火山位ヶ原テフラ層直下の炭化木片の加速器^14C年代"}]},{"@id":"https://cir.nii.ac.jp/crid/1573387449631678592","@type":"Article","relationType":["cites"],"jpcoar:relatedTitle":[{"@value":"御岳第1浮石層(P1)を含む信州ローム層の絶対年代について"}]},{"@id":"https://cir.nii.ac.jp/crid/1573668924608385792","@type":"Article","relationType":["cites"],"jpcoar:relatedTitle":[{"@language":"en","@value":"Tectonic history of the Izu Peninsula and adjacent areas based on paleomagnetism and stratigraphy"}]},{"@id":"https://cir.nii.ac.jp/crid/1573950399585099392","@type":"Article","relationType":["cites"],"jpcoar:relatedTitle":[{"@language":"en","@value":"Paleo-magnetism of Quaternary volcanics in the Izu Peninsula and adjacent areas, Japan, and its tectonic significance"}]},{"@id":"https://cir.nii.ac.jp/crid/1573950399585100416","@type":"Article","relationType":["cites"],"jpcoar:relatedTitle":[{"@language":"en","@value":"Paleomagnetic study of the Middle to Late Pleistocene volcanic rocks in the northeastern part of the Yatsugatake volcanic chain, central Japan"}]},{"@id":"https://cir.nii.ac.jp/crid/1574231874561807488","@type":"Article","relationType":["cites"],"jpcoar:relatedTitle":[{"@language":"en","@value":"Paleomagnetism of Pleistocene Usami volcano, Izu peninsula, Japan -Intensity of the earth's magnetic field in geological time, II"}]},{"@id":"https://cir.nii.ac.jp/crid/1574231874561808768","@type":"Article","relationType":["cites"],"jpcoar:relatedTitle":[{"@value":"八ヶ岳東方地域の第三紀及び第四紀火山の活動時期"}]},{"@id":"https://cir.nii.ac.jp/crid/1574231874561809792","@type":"Article","relationType":["cites"],"jpcoar:relatedTitle":[{"@language":"en","@value":"K-Ar ages of volcanic rocks from the northern area of the Yatsugatake volcanic chain, cenral Japan"}]},{"@id":"https://cir.nii.ac.jp/crid/1574231874561811968","@type":"Article","relationType":["cites"],"jpcoar:relatedTitle":[{"@language":"en","@value":"A geomagnetic record over the last 3.5 million years from deep-tow magnetic anomaly profiles across the Central Indian Ridge"}]},{"@id":"https://cir.nii.ac.jp/crid/2051714792011293312","@type":"Article","resourceType":"学術雑誌論文(journal article)","relationType":["isReferencedBy"],"jpcoar:relatedTitle":[{"@value":"Aeromagnetic survey in Kusatsu-Shirane volcano, central Japan, by using an unmanned helicopter"}]}],"dataSourceIdentifier":[{"@type":"JALC","@value":"oai:japanlinkcenter.org:2001960250"},{"@type":"NDL_SEARCH","@value":"oai:ndlsearch.ndl.go.jp:R000000004-I6398233"},{"@type":"CIA","@value":"110003041271"},{"@type":"CROSSREF","@value":"10.1186/s40623-021-01466-5_references_DOI_D8ezSQ6jzICoPLKPpEDcUicRCJS"}]}