Dinosaur Extinction Event
K-T Boundary Material
This specimen of K-T Boundary material was collected in Trochu, Alberta, Canada. This is the zone that separates the Cretaceous period from the Tertiary period. The zone in the rock record where dinosaurs became extinct. In fact about 75% of all life on Earth became extinct. The extinction event is believed to have been caused by the impact of a 6 mile in diameter space rock traveling at 124,000 miles per hour that struck the Yucatan Peninsula of Mexico about 65 million years ago. The impact left a worldwide layer of material containing the very rare on earth element Iridium 77. This specimen is from that layer.
about 1/2 inch
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