EPISODE · Oct 15, 2025 · 48 MIN
Geochemistry Without Borders: A Conversation with Alecos Demetriades
from GeOCHemISTea · host Sam Scher
Alecos Demetriades, applied geochemist and Chair of the IUGS Commission on Global Geochemical Baselines (2024–2028), joins GeOCHemISTea to unpack the Global Geochemical Reference Network (GGRN): why a 160×160 km grid matters, how harmonized sampling/analysis underpins trustworthy baselines, and what QA/QC must look like before interpretation. We touch on FOREGS, leveling national datasets to global references, and practical ways exploration and mining teams can access, use, and contribute to these datasets. Plus: tea stories during Tea Time and why passing knowledge to the next generation keeps this global effort moving. For this episode we read: International Union of Geological Sciences Manual of Standard Methods for Establishing the Global Geochemical Reference Network
What this episode covers
Alecos Demetriades, applied geochemist and Chair of the IUGS Commission on Global Geochemical Baselines (2024–2028), joins GeOCHemISTea to unpack the Global Geochemical Reference Network (GGRN): why a 160×160 km grid matters, how harmonized sampling/analysis underpins trustworthy baselines, and what QA/QC must look like before interpretation. We touch on FOREGS, leveling national datasets to global references, and practical ways exploration and mining teams can access, use, and contribute to these datasets. Plus: tea stories during Tea Time and why passing knowledge to the next generation keeps this global effort moving. For this episode we read: International Union of Geological Sciences Manual of Standard Methods for Establishing the Global Geochemical Reference Network
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Geochemistry Without Borders: A Conversation with Alecos Demetriades
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