4 0 0 0 天平の産金地,陸奥国小田郡の山
- 著者
- 鈴木 舜一
- 出版者
- 日本地質学会
- 雑誌
- 地質學雜誌 (ISSN:00167630)
- 巻号頁・発行日
- vol.114, no.5, pp.256-261, 2008-05-15
- 参考文献数
- 39
- 被引用文献数
- 1
In the middle of the 8th century, a prospecting party under the Provincial Government of Michinoku discovered a gold placer at Nonodake Hill, the Province of Michinoku, Northeast Japan. The placer was worked by corvee labor. It was the earliest gold mining in Japan K. Kudaranokonikishi, Governor of Michinoku, offered 33.75 kg of gold to the Emperor Shomu in 749. The people of the northern parts of Michinoku were saddled with 9.4 g of gold in poll tax from 752. The gold was used for gilding of the great bronze statue of Buddha at Nara which was under construction. The statue, 15.8 m in height, was completed in 757. A total of 150 kg or more of gold was gilded the statue and others. In 760, the Japanese Government minted the first gold coin in Japan, which was named Kaikishoho. The working was interrupted because of a rebellion by the natives against the Government in 774, and was reopened after 38 years' disturbances of war. The gold diggings decreased in production from the early part of the 9th century. The placer gold had been almost exhausted in the 15th century. A very small quantity of gold is still obtained from the remains of the diggings.
3 0 0 0 OA 天平の産金地,宮城県箟岳丘陵の砂金と地質の研究史
- 著者
- 鈴木 舜一
- 出版者
- 一般社団法人 日本地質学会
- 雑誌
- 地質学雑誌 (ISSN:00167630)
- 巻号頁・発行日
- vol.116, no.6, pp.341-346, 2010 (Released:2010-10-13)
- 参考文献数
- 38
Gold placer was discovered at Nonodake Hill in the mid-eighth century, making it the site of the earliest gold diggings in Japan. Watanabe (1935) was the first geologist to discuss the source of the placer gold, suggesting that it was derived from a Tertiary conglomerate containing rounded fragments of vein quartz, and that the primary source was pre-Tertiary gold veins in the Kitakami Mountains. Onoda (1942) agreed with Watanabe’s view. However, Yagyu (1953) suggested that the placer gold was derived from Tertiary gold veins on the northern side of Nonodake Hill. Taguchi and Ozaki (1994) undertook chemical analyses of particles of placer gold using a scanning electron microscope with an X-ray microanalyzer. Their results support Watanabe’s view on the primary source of the placer gold.
3 0 0 0 OA 天平の産金地,陸奥国小田郡の山
- 著者
- 鈴木 舜一
- 出版者
- 一般社団法人 日本地質学会
- 雑誌
- 地質学雑誌 (ISSN:00167630)
- 巻号頁・発行日
- vol.114, no.5, pp.256-261, 2008-05-15 (Released:2009-03-22)
- 参考文献数
- 39
- 被引用文献数
- 1 1
In the middle of the 8th century, a prospecting party under the Provincial Government of Michinoku discovered a gold placer at Nonodake Hill, the Province of Michinoku, Northeast Japan. The placer was worked by corvee labor. It was the earliest gold mining in Japan. K. Kudaranokonikishi, Governor of Michinoku, offered 33.75 kg of gold to the Emperor Shomu in 749. The people of the northern parts of Michinoku were saddled with 9.4 g of gold in poll tax from 752. The gold was used for gilding of the great bronze statue of Buddha at Nara, which was under construction. The statue, 15.8 m in height, was completed in 757. A total of 150 kg or more of gold was gilded the statue and others. In 760, the Japanese Government minted the first gold coin in Japan, which was named Kaikishoho. The working was interrupted because of a rebellion by the natives against the Government in 774, and was reopened after 38 years’ disturbances of war. The gold diggings decreased in production from the early part of the 9th century. The placer gold had been almost exhausted in the 15th century. A very small quantity of gold is still obtained from the remains of the diggings.
2 0 0 0 美濃帯二畳系舟伏山石灰岩中の無煙炭の石炭組織と堆積環境
1 0 0 0 OA 日立変成岩中の炭質物のグラファイト化度
- 著者
- 土屋 範芳 鈴木 舜一 小田 幸人 飯島 章夫
- 出版者
- Japan Association of Mineralogical Sciences
- 雑誌
- 岩鉱 (ISSN:09149783)
- 巻号頁・発行日
- vol.84, no.3, pp.89-96, 1989-03-05 (Released:2008-03-18)
- 参考文献数
- 44
Carbonaceous material in pelitic rocks and limestones of the Ayukawa and the Daioin Formations in the Hitachi metamorphic rocks was investigated by means of X-ray powder diffraction technique. Carbonaceous material in these metasediments was graphitized under the conditions of greenschist facies. rystallite thickness Lc (002) ranges from 29 to 170 Å in the Ayukawa Formation and that from 120 to 300 Å in the Daioin Formation. Lc (002) of carbonaceous material in pelitic rocks containing biotite is more than 60 Å and increases with increasing metamorphic grade. Lc (002) value at a boundary between greenschist and epidote-amphibolite facies may be estimated 260-300 Å from the data of Lc (002) of the lower part of the Daioin Formation. Lc (002) of the Ayukawa Formation surrounding the sheared granite is above 200 Å. As compared with the general value of the Daioin Formation, Lc (002) of the Daioin Formation around the sheared granite is not so high. Thermal effect of the sheared granite was not marked, which suggests that the sheared granite intruded under low temperature condition.
1 0 0 0 OA 端渓硯石産地の地質と古文献「懐瑞続硯譜」
- 著者
- 鈴木 舜一
- 出版者
- Tokyo Geographical Society
- 雑誌
- 地学雑誌 (ISSN:0022135X)
- 巻号頁・発行日
- vol.110, no.5, pp.734-743, 2001-10-25 (Released:2009-11-12)
- 参考文献数
- 36
- 被引用文献数
- 2