Japan Geoscience Union Meeting 2023

Presentation information

Print

[J] Oral

S (Solid Earth Sciences ) » S-CG Complex & General

[S-CG48] Petrology, Mineralogy & Resource Geology

Fri. May 26, 2023 1:45 PM - 3:00 PM 301A (International Conference Hall, Makuhari Messe)

convener:Yu Nishihara(Geodynamics Research Center Ehime University), Keisuke Fukushi(Institute of Nature & Environmental Technology, Kanazawa University), Tatsuo Nozaki(Submarine Resources Research Center, Research Institute for Marine Resources Utilization, Japan Agency for Marine-Earth Science and Technology), Yui Kouketsu(Department of Earth & Planetary Sciences, Graduate School of Environmental Studies, Nagoya University), Chairperson:Tatsuo Nozaki(Submarine Resources Research Center, Research Institute for Marine Resources Utilization, Japan Agency for Marine-Earth Science and Technology), Keisuke Fukushi(Institute of Nature & Environmental Technology, Kanazawa University)

2:15 PM - 2:30 PM

[SCG48-09] Correlation analysis of hydrothermal alteration minerals related to porphyry copper deposits in South America to copper ore tonnage using satellite image database GRIAS.

*Yukiya Fujita1, Taiki Kubo1, Katsuaki Koike1 (1.Laboratory of Environmental Geosphere Engineering, Department of Urban Management, Graduate School of Engineering, Kyoto University)


Keywords:Porphyry copper deposit, GRIAS, ASTER image, Mineral content estimation map, Correlation analysis

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.