Macro-scale ore-controlling faults revealed by micro-geochemical anomalies

Autor(es)

Carranza, Emmanuel John M. ^[1] ; de Souza Filho, Carlos Roberto ^[2] ; Haddad-Martim, Paulo Miguel ^[2] ; Nagayoshi, Katsuta ^[3] ; Shimizu, Ichiko ^[4]

Afiliação do(s) autor(es)

^[1] Univ KwaZulu Natal, Discipline Geosci, Westville Campus, Durban - South Africa

^[2] Univ Estadual Campinas, Inst Geosci, Campinas, SP - Brazil

^[3] Gifu Univ, Dept Educ, Gifu - Japan

^[4] Univ Tokyo, Grad Sch Sci, Dept Earth & Planetary Sci, Bunkyo Ku, Tokyo - Japan

• Tipo de documento: Artigo Científico
• Fonte: SCIENTIFIC REPORTS; v. 9, MAR 13 2019.
• Citações Web of Science: 1

Resumo

Whereas the mechanism of fluid flow, and thus structural control, linked with mineral deposit formation is quite understood, the specific structures that likely provided controls on mineralization at certain geographic scales are not readily known for a given region unless it is well-explored. This contributes uncertainty in mineral prospectivity analysis in poorly-explored regions (or greenfields). Here, because the spatial distribution of mineral deposits has been postulated to be fractals (i.e., the patterns of these features are self-similar across a range of spatial scales), we show for the first time that micro-geochemical anomalies (as proxies of micro-scale patterns of ore minerals), from few discrete parts of the Sossego iron-oxide copper-gold (IOCG) deposit in the Carajas Mineral Province (CMP) of Brazil, exhibit trends of macro-scale faults that are known to have controlled IOCG mineralization in the CMP. The methodology described here, which led to this novel finding, would help towards detecting mineral exploration targets as well as help towards understanding structural controls on mineralization in greenfields. (AU)

• Processo FAPESP: 15/11186-3 - O uso de fractais para a elaboração de mapas de favorabilidade mineral: o exemplo dos depósitos iron oxide Copper-Gold de Carajás (PA)
• Beneficiário: Paulo Miguel Haddad Martim
• Modalidade de apoio: Bolsas no Brasil - Mestrado