The Fossil Record
By studying the fossil record, scientist have been able to identify what phenomena?
The Alvarez's were studying historic marine animals in Italy when they discovered this layer in the earths fossil record?
What is the iridium anomaly?
While searching for oil drilling spots around the Gulf of Mexico, this scientist found magnetic waves that indicated a large collision happened here.
Who is Glen Penfield?
These physical debris were found around the Yucatan Peninsula that helped scientists confirm the asteroid impact was near Chixulub.
Shocked quartz, glass spheres, and tsunami debris