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https://www.youtube.com/@valls_geoconsultant?sub_confirmation=1 For more videos about geology, geochemistry, AI, and much more, please visit and subscribe for free here: Golden droplets- https://shorturl.at/fetV1 Geovoices- https://tinyurl.com/m23pp4pb News about geology- https://tinyurl.com/3979urhy Timestamps 0:00 Introduction – are gold deposits disappearing?​ 0:38 Brief recap of how gold deposits form in the crust​ 1:20 Types of gold deposits most affected by erosion​ 2:05 Physical erosion: rivers, glaciers, and slope processes​​ 3:00 How erosion removes or thins near-surface gold orebodies​ 3:55 Case examples of eroded gold camps through geological time​ 4:40 Supergene enrichment vs complete removal of gold​ 5:35 Role of climate and uplift in preserving or destroying deposits​ 6:25 Implications for placer gold in modern river systems​ 7:15 Exploration strategies in highly eroded terrains​​ 8:10 Are we “running out” of easy gold deposits?​​ 9:05 What this means for future gold discoveries​​ 9:55 Final thoughts and prospector takeaways The sources primarily offer a technical overview of Accelerator Mass Spectrometry (AMS), particularly its application in cosmogenic nuclide dating for geological and environmental studies. One source details the principles and components of AMS, explaining its high sensitivity for measuring rare, long-lived radioisotopes like 14C and 10Be. The other sources focus on utilizing these cosmogenic nuclides, such as paired 10Be and 26Al, to determine exposure ages, erosion rates, and sediment burial histories in various landscapes, including glacial and fluvial environments. Crucial aspects of cosmogenic dating, such as sample preparation techniques, field sampling strategies (especially in glacial settings), and the interpretation of erosion rate discordance in detrital sediments, are thoroughly discussed. Additionally, a peripheral source presents information on geochemical data analysis using the CoDaPack software, suggesting applications in geological exploration. 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 If you like this content, please "buy me a coffee" https://www.buymeacoffee.com/goldendroplets @valls_geoconsultant #ErosionSecret #GeochemicalExploration #CosmogenicNuclides #AMSScience References Balco, G. (n.d.). The online calculators formerly known as the CRONUS-Earth online calculators (Version 3). Cosmogenic Nuclide Lab, University of Washington. Bierman, P. R., Bender, A. M., Christ, A. J., Corbett, L. B., Halsted, C. T., Portenga, E. W., & Schmidt, A. H. (2021). Dating by cosmogenic nuclides. [Source unknown, possibly a treatise], 101–115. Fifield, L. K. (2003). Accelerator Mass Spectrometry. [Source unknown], 461–487. Halsted, C. T., Bierman, P. R., Codilean, A. T., Corbett, L. B., & Caffee, M. W. (2025). Global analysis of in situ cosmogenic 26Al and 10Be and inferred erosion rate ratios in modern fluvial sediments indicates widespread sediment storage and burial during transport. Geochronology, 7, 213–228. Schmidt, C., Mair, D., Akçar, N., Christl, M., Haghipour, N., Vockenhuber, C., Gautschi, P., & Schlunegger, F. (2025). Quantifying erosion in a pre-Alpine catchment at high resolution with concentrations of cosmogenic 10Be, 26Al, and 14C. EGUsphere, 2025, 1–31. Valls, R. (n.d.). Curso CoDaPack Extracción de toda la información de sus datos geoquímicos [Video transcript]. YouTube. Valls, R. (n.d.). Erosional level restream [Video transcript]. YouTube. Willenbring, J. K., & von Blanckenburg, F. (2010). Meteoric cosmogenic Beryllium-10 adsorbed to river sediment and soil: applications for Earth-surface dynamics. Earth-Science Reviews, 98(1-2), 105–122.