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The Metallogeny of the Japanese Islands
https://doi.org/10.15083/00037765
https://doi.org/10.15083/00037765cd9d6e4b-7c2f-49c8-a8ed-fa57be333ba4
名前 / ファイル | ライセンス | アクション |
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Item type | 紀要論文 / Departmental Bulletin Paper(1) | |||||
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公開日 | 2010-02-08 | |||||
タイトル | ||||||
タイトル | The Metallogeny of the Japanese Islands | |||||
言語 | ||||||
言語 | eng | |||||
資源タイプ | ||||||
資源 | http://purl.org/coar/resource_type/c_6501 | |||||
タイプ | departmental bulletin paper | |||||
ID登録 | ||||||
ID登録 | 10.15083/00037765 | |||||
ID登録タイプ | JaLC | |||||
著者 |
Iwasaki, C.
× Iwasaki, C. |
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抄録 | ||||||
内容記述タイプ | Abstract | |||||
内容記述 | The above statements may be summarized as follows:- a. During the consolidation of magma, various magmatic emanations are exuded, by the petrification of which ore-deposits are formed. b. A definite process of deposition of emanations determines the order of petrification, as stated in Section 3, p. 4. c. The ore-deposits of igneous origin may be classified into five divisions; magmatic segregations, contacts, replacements, mineral veins and impregnations. d. There are several kinds of igneous rocks called ore-bringers, which produced the ore-deposits by their ""eruptive after-action."" e. The Japanese empire is divided from the metallogenetic point of view into five provinces, according to the difference of the ore-bringers. They are as follows:- (Table) f. The minerals in the ore-deposits in the different provinces are distributed in the order of petrification as in the following table: - (Table) As the reader will see, in the pertrification order all the minerals except calcite are found in the Provinces of Korea and Kitakami. This is because they all belong to the older veins, which means that the formation of the minerals took place in the deep, where the temperature of the emanations was very high, the petrification continuing until the emanations got entirely cool. The pyrite beds in the Besshi Province are supposed to have been emitted from the most basic rocks such as serpentine or gabbro, and therefore only the minerals of the lower position in the pertrification order are deposited there. The scantiness of quartz in the pyritic beds is explained by the basic character of the supposed ore-bringers. In the Provinces of Kosaka and Satsuma only the ore-deposits of younger formation are distributed and therefore such minerals as iron oxides or ferromagnesian silicates are never found there. Sulphides are more abundant in the Kosaka, Province than in the Satsuma Province, for the fusing point of quartz-trachyte is higher than that of andesite. In the gold veins in the Satsuma Province, sulphides are very scanty, but if we go deep down we shall find much more of the sulphides which are of a higher pertrification order than quartz and calcite, the two predominating vein-stuffs of the Satsuma Province. | |||||
書誌情報 |
Journal of the College of Science, Imperial University of Tokyo 巻 32, p. 1-23, 発行日 1912-11-03 |
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書誌レコードID | ||||||
収録物識別子タイプ | NCID | |||||
収録物識別子 | AA00695779 | |||||
書誌レコードID | ||||||
識別子タイプ | NCID | |||||
関連識別子 | BA29455243 | |||||
フォーマット | ||||||
内容記述タイプ | Other | |||||
内容記述 | application/pdf | |||||
日本十進分類法 | ||||||
主題 | 459.12 | |||||
主題Scheme | NDC | |||||
出版者 | ||||||
出版者 | Inperial University of Tokyo | |||||
出版者別名 | ||||||
東京帝國大學理學部 |