Evaluación del potencial de mineralización tipo pórfido cuprífero en el sector noreste de la Cuenca Alamor Lancones mediante la integración de datos geológicos, estructurales, geofísicos y geoquímicos.

Abstract

Abstract: This study evaluated the prospectivity for porphyry copper mineralization in the northeastern sector of the Alamor Lancones Basin through the integration of geochemical, geological, structural, and magnetic data. A total of 1,566 stream-sediment samples were analyzed using univariate statistics, principal component analysis (PCA), K-means clustering, and spatial interpretation of geochemical anomalies. Aeromagnetic information was evaluated using TMI, RTP, analytic signal, and TILT products and contrasted with geological field observations. The integrated analysis delineated and ranked four prospective sectors: Olmedo and La Chora as high-priority targets, Tambara as a medium-high-priority target, and Nambacola as a medium-priority target. Olmedo, La Chora, and Tambara display alteration, veining, and mineralization assemblages that are compatible, to varying degrees, with porphyry-type intrusive-hydrothermal systems, whereas Nambacola contains Cu mineralization and hydrothermal activity whose mineralization style remains undetermined. The evidence recognized at Olmedo, La Chora, and Tambara supports reassessing the distribution of porphyry systems in the northeastern sector of the Alamor Lancones Basin; however, the lack of geochronological data prevents establishing their temporal relationship with regional Cretaceous systems and demonstrating an extension of the metallogenic belt into this sector.