Question

Which feature is one of the pieces of evidence that indicates that the boundary between the Cretaceous Period and the Tertiary was marked by the impact of a large meteorite (bolide)?​

Answer 1

• The impact gave acid rain, depending on rocks the asteroid struck.
• Impact hypotheses can only explain very rapid extinctions, since the dust clouds and possible sulphuric aerosols would wash out of the atmosphere.
• the K–Pg layer consistently show the excess of the iridium.

Step-by-step explanation:

• The meteorite impact and the extinction of the species at the cretaceous boundary are known as the K and T boundary and can be understood using the thin band of rocks. The evidence is given by the Alvarez hypothesis and the higher iridium on the earth's crust.