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Showing 1 to 1 of 1 for “"Ordovician Meteor Event"”.
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Applied Geochemistry, Geochronology and Biostratigraphy: Case Studies from the 38th Parallel Structures in Missouri and Orange Basin, Offshore Western South Africa
… palynomorphs in all the three structures. Early Ordovician acritarchs with melted processes correlate with <sup>40</sup>Ar-<sup>39</sup>Ar stepwise heating age of impact spherules from the Crooked Creek structure. This age is coeval with a large clustering event that was responsible for other …