Evidence of this event can be found in a two-inch layer of glass beads near the Bass River in New Jersey. Analysis of the same geologic stratum in Denmark, New Zealand, and Italy also reveal an abnormal abundance of iridium and other heavy siderophilic elements, suggesting an extraterrestrial source. For 10 points—name this catastrophic event discovered by Luis Alvarez, denoted biologically by the extinction of the dinosaurs.
Evidence of this event can be found in a two-inch layer of glass beads near the Bass River in New Jersey. Analysis of the same geologic stratum in Denmark, New Zealand, and Italy also reveal an abnormal abundance of iridium and other heavy siderophilic elements, suggesting an extraterrestrial source. For 10 points—name this catastrophic event discovered by Luis Alvarez, denoted biologically by the extinction of the dinosaurs.
Evidence of this event can be found in a two-inch layer of glass beads near the Bass River in New Jersey.
{K-T} Extinction [or {Cretaceous-Tertiary} Extinction]