A space to discuss aspects of the Caribbean geology, ore potential of the ophiolite belts, etc.
Thursday, March 12, 2026
https://youtu.be/FWJ5rWVJnZU
https://www.youtube.com/@valls_geoconsultant?sub_confirmation=1
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Timestamps
00:00 – Intro and purpose of the video
01:00 – Paraguay’s main geological divisions and basins
03:00 – Paraná and Gran Chaco basins: structure and resources
05:00 – Non‑metallic resources: limestone, clays, talc
07:00 – Precambrian cratons, alkaline provinces, and metals
09:00 – Paso Yobai gold, titanium Alto Paraná, uranium and diamonds
10:30 – Conclusions: is Paraguay the next big gold rush?
This video provides an in-depth analysis of Paraguay geology and its diverse mineral resources to evaluate whether the region is witnessing the start of the next significant gold rush. By examining the structural geology and gold mineralization patterns, we help prospectors and geologists understand the untapped potential of this South American frontier. The country is structurally bisected by the Paraguay River, transitioning from the gently dipping beds of the intracratonic Parana Basin in the east to the deep, 10,000-foot-deep Gran Chaco sedimentary basin in the west (Wiens, 1995). While Paraguay's mineral resources have historically been dominated by non-metallic commodities such as high-purity limestone, industrial clays, and talc, recent exploration has identified a significant potential for metallic deposits within the Precambrian cratons and alkaline provinces (Eckel, 1959; MOPC, 2020). Specifically, gold mineralization in the Paso Yobai region is hosted within basaltic dikes and structures where high-grade free gold has been confirmed in independent NI 43-101 technical reports (Wilson, 2012; Hedenquist, 2008). Beyond gold, the Alto Parana project highlights massive titanium deposits, while other geological settings suggest the possibility of uranium and diamonds associated with Permian formations (Soto-Viruet, 2021; USERDA, 1977). For senior geologists and earth science students, the integration of advanced geochemistry and insights from tectonic specialists is vital to navigating this evolving landscape and identifying high-value targets (Fulfaro et al., 1997; Patnaik, 2020). As exploration modernizes, the geological community must look beyond historical legends to the proven structural controls that define the distribution of mineralization across the region (Valls, 2020; Minas Paraguay S.A., 2012).
The bridge between Academy and Industry!
P. Geo. Ricardo A Valls, M. Sc. and Geo Gadfly
Valls Geoconsultant
ORCID ID- https://orcid.org/0000-0002-5421-0914
Scopus Author ID: 7003369619/35335510700
ResearcherID: S-6604-2018
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Some References
Eckel, E. B. (1959). Geology and mineral resources of Paraguay—A reconnaissance (U. S. Geological Survey Professional Paper 327). United States Government Printing Office. https://pubs.usgs.gov/pp/0327/report.pdf
Ministerio de Obras Públicas y Comunicaciones. (2020). Potencial minero del Paraguay [PowerPoint slides]. Viceministerio de Minas y Energía.
Wiens, R. (1995). The geological evolution of the Paraguayan Chaco [Unpublished research report]. Texas Tech University. https://www.geologiadelparaguay.com.py/The-Geological-Evolution-of-the-Paraguayan-Chaco.pdf
Wilson, C. C. (2012, June). NI 43-101 technical report on the Paso Yobai Project, Guaira Department, Paraguay. Exploration Alliance S.A. for Minas Paraguay S.A.
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