丹波地帯古生層の層状マンガン鉱床におけるMn,Feの分布

概要

論文の詳細を見る
Many bedded manganese deposits are intercalated in the bedded chert formations of the Palaeozoic system in the Tamba district. As to their genesis, we consider by many lines evidence that they were formed syngenetically with the country rocks in connection with the submarine volcanic activities in the Honshu geosyncline. For the purpose of investigating the infiuence of mineralization on country rocks, we have examined the distribution of manganese and iron in them. The results obtained are as follows: 1) Manganese content is distributed asymmetrically between the hanging wall and the foot wall. Generally the content in the country rocks on the hanging-wall side is slightly denser and varies more greatly than that in the rocks on the foot-wall side. 2) The distribution of iron is considerably irregular among the hanging wall, the ore bed and the foot wall. However, the extent of the irregularity is of approximately the same between them. 3) There exists to some extent a correlation between manganese and iron contents in country rocks. We considered that these characteristics were the reflection of the original state of mineralization.
日本地質学会の論文
1971-07-31