四国西部秩父累帯ドロマイト鉱床の地質学的研究

• 宮久 三千年

  愛媛大学文理学部地学教室

• 鹿島 愛彦

  愛媛大学文理学部地学教室

書誌事項

タイトル別名

• Geological Studies on the Dolomite Deposits of Chichibu Terrain

抄録

Dolomite deposits of western Shikoku are distributed in some definite stratigraphic and geotectonic zone. They are classified into the following group.<BR>1) Siliceous dolomite deposits of the northern zone of upper Carboniferous in age. These deposits are associated with red tuff, red chert, and other clastic sediments of volcanic materials.<BR>2) Some workable dolomite deposits of the southern zone of lower Triassic Uonashi formation, independent of volcanic activities.<BR>Chief factors of the formation of dolomite are temperature, pH, Eh and concentration of Mg-ion in the sea-water of geosynclinal basin. These factors are related to some paleogeographical environments, such as submarine volcanism (Northern zone) and development of shallow sedimentary basin of nearshore line (Southern zone).<BR>Chemical compositions of mineral dolomites, mechanism of dolomitization, deformation and recrystallization of ores, and relation of dolomite bed to other submarine sedimentary ore deposits are also discussed in this paper.

収録刊行物

• 鉱山地質

  鉱山地質 17 (84), 214-227, 1967

  資源地質学会

詳細情報

• CRID: 1390001206525824512
• NII論文ID: 130003441026
• DOI: 10.11456/shigenchishitsu1951.17.84_214
• ISSN: 00265209
• データソース種別:
  • JaLC
  • CiNii Articles
• 抄録ライセンスフラグ: 使用不可