{"title":"多摩丘陵中部，上总层群中发现的黏土矿物的研究之一","authors":"吉宏 坂本","doi":"10.2465/GKK1952.17.SPECIAL_35","DOIUrl":null,"url":null,"abstract":"Clay minerals in No. 1 Hoshikawa tuff, the Koshiba and Kakio formations of Tama-kyuryou, and in No. 1 Hoshikawa tuff beds and the Bushi formation of Kaji-kyuryou were studied. The formations are considered to be of Early Pleistocene age. The Koshiba and Kakio formations belong to the Kazusa Group. The Koshiba and Kakio formations consist of sandstones and siltstones with pyroclastic key beds. The Bushi formation consists of siltstones with pyroclastic key beds. The results of the study are: 1) Clay minerals in the Koshiba and Kakio formations and No. 1 Hoshikawa tuff beds of Tama-kyuryou are montmorillonite, illite and chlorite. 2) Clay minerals in the Bushi formation and No. 1 Hoshikawa tuff of Kaji-kyuryou are montmorillonite, vermiculite, biotite and kaolinite. 3) The geological papers published and the results of this study suggest that chlorite and illite are derived from background area.","PeriodicalId":242743,"journal":{"name":"Journal of the Mineralogical Society of Japan","volume":"116 1","pages":"0"},"PeriodicalIF":0.0000,"publicationDate":"1986-03-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"多摩丘陵中部,上総層群に見られる粘土鉱物の検討 その1\",\"authors\":\"吉宏 坂本\",\"doi\":\"10.2465/GKK1952.17.SPECIAL_35\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"Clay minerals in No. 1 Hoshikawa tuff, the Koshiba and Kakio formations of Tama-kyuryou, and in No. 1 Hoshikawa tuff beds and the Bushi formation of Kaji-kyuryou were studied. The formations are considered to be of Early Pleistocene age. The Koshiba and Kakio formations belong to the Kazusa Group. The Koshiba and Kakio formations consist of sandstones and siltstones with pyroclastic key beds. The Bushi formation consists of siltstones with pyroclastic key beds. The results of the study are: 1) Clay minerals in the Koshiba and Kakio formations and No. 1 Hoshikawa tuff beds of Tama-kyuryou are montmorillonite, illite and chlorite. 2) Clay minerals in the Bushi formation and No. 1 Hoshikawa tuff of Kaji-kyuryou are montmorillonite, vermiculite, biotite and kaolinite. 3) The geological papers published and the results of this study suggest that chlorite and illite are derived from background area.\",\"PeriodicalId\":242743,\"journal\":{\"name\":\"Journal of the Mineralogical Society of Japan\",\"volume\":\"116 1\",\"pages\":\"0\"},\"PeriodicalIF\":0.0000,\"publicationDate\":\"1986-03-20\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Journal of the Mineralogical Society of Japan\",\"FirstCategoryId\":\"1085\",\"ListUrlMain\":\"https://doi.org/10.2465/GKK1952.17.SPECIAL_35\",\"RegionNum\":0,\"RegionCategory\":null,\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"\",\"JCRName\":\"\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Journal of the Mineralogical Society of Japan","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.2465/GKK1952.17.SPECIAL_35","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
Clay minerals in No. 1 Hoshikawa tuff, the Koshiba and Kakio formations of Tama-kyuryou, and in No. 1 Hoshikawa tuff beds and the Bushi formation of Kaji-kyuryou were studied. The formations are considered to be of Early Pleistocene age. The Koshiba and Kakio formations belong to the Kazusa Group. The Koshiba and Kakio formations consist of sandstones and siltstones with pyroclastic key beds. The Bushi formation consists of siltstones with pyroclastic key beds. The results of the study are: 1) Clay minerals in the Koshiba and Kakio formations and No. 1 Hoshikawa tuff beds of Tama-kyuryou are montmorillonite, illite and chlorite. 2) Clay minerals in the Bushi formation and No. 1 Hoshikawa tuff of Kaji-kyuryou are montmorillonite, vermiculite, biotite and kaolinite. 3) The geological papers published and the results of this study suggest that chlorite and illite are derived from background area.
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