Here is the video of our last webinar held thursday 22 september by Dr. Dwight Bradley (Emeritus, United States Geological Survey) entitled (The Assabet barcode: Early Neoproterozoic arrival of Mesoproteroizoic detrital zircons on the West African Craton in Mauritania), 26 participants.
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IGCP683
Pre-Atlantic geological connections among northwest Africa, Iberia and eastern North America