What element helped scientists say that a meteor killed dinosaurs?

Question

What element helped scientists say that a meteor killed dinosaurs?

Answer 1

the gulf of Mexico

we know or can figure out what a large meteor would do if it landed here

the sky would be full of dust for many years ,It takes only one year of the sun being blocked out to start of an ice age

and the shock waves would travel for thousands of miles ,killing everything in its path and they would be in all directions

the gulf of Mexico is a meteor hole of a meteor easily big enough for all that.

the only thing is we dont know when it was made

and that it resulted in making the dinosaurs exstinct is suposition it could have happened later and then killed everything that was around then

ice ages are aparently not unusual in the planets life history,neither are global disasters that wiped everything out ,whole civilizations could have been totaly removed of which we have never found anything conclusive

some strange things have been discovered in the ocean trench of Bermuda such as very fancy  marble pillars on just about the deepest sea bottom we got

Answer 2

Iridium is rare on Earth but common in some kinds of asteroids. Iridium is found in a very thin layer in the sediments separating the last of the dinosaurs with the zone just following the extinction that has no dinosaurs.

Answer 3

Iridium which is commonly found in meteors.