[S-CG48] 岩石・鉱物・資源

[SCG48-09] 衛星画像データベースGRIASを用いた南アメリカ斑岩銅鉱床関連の熱水変質鉱物量と銅鉱量の相関解析

*藤田 佑希也¹、久保 大樹¹、小池 克明¹ (1.京都大学大学院工学研究科 都市社会工学専攻地殻環境工学講座)

キーワード：斑岩銅鉱床、GRIAS、ASTER画像、鉱物含有量推定図、相関分析

Stable supply of metal resources is necessary for future industrial development and realization of a sustainable society. Supply of copper, one of the base metals, is largely dependent on overseas porphyry copper deposits, and the discovery of new porphyry copper deposits is expected to ensure a continuous supply of copper. The purpose of this study is to clarify a relationship between the ore tonnages in main deposits and the developments of hydrothermal alteration minerals by using the mineral content estimation maps contained in GRIAS (Geo-Resource Information Archive System), developed by the Agency for Natural Resources and Energy. This presentation will show the results of a statistical analysis of the 53 deposits in South America between S11° to S45°, where the production volume and grade of each deposit are registered in the U.S. Geological Survey (USGS) database, as well as the identification of prospective sites in the target area and a method proposed to improve the accuracy of the analysis.