1. There is an unusually high concentration of Iridium found at the K-T boundary. Iridium loves to stick to Iron, so the Iridium that would have been on Earth originally is in the Iron core, not in the crust. Therefore, the Iridium must have been introduced by an external source; a meteorite.
2. Shocked Quartz is found at the K-T Boundary all around North America. Shocked Quartz is only produced naturally by bolide impact. Since the K-T meteorite impacted in the Mexican peninsula, it makes sense that the shocked quartz would be found only in relatively close proximity to the impact site.
3. Microtektites, which are normally found at meteorite impact sites, are found at all K-T boundary impact sites.
4. There is a massive impact crater in the Mexican peninsula.
5. In many of the K-T Boundary sections there is a fine layer of ash (disseminated Carbon) from the global wildfires that were caused.
6. There was a fern spike because other flowering plants stopped producing pollen for awhile.
7. Microdiamonds have been detected at K-T Boundary sites, but not above or below.
Numerical dating is when you are trying to determine how long ago something took place or specifically how old something or someone is. For example, the extinction of the dinosaurs about 65 million years ago. Relative dating cannot tell us how long ago something took place, only that is followed one event and preceded another.
Scientist can find a range of when the event happened through carbon dating. They can not pin point the exact date, though.
epicenter
the eruption took place in Iceland 14th of April
Those lucky enough to see it as it approached took shelter where they could, but aside from that there was no preparation. There was no warning system in place, so most people did not know it was coming.
From the PALEOZOIC ERA.
The Permian Extinction took place 250 million years ago, and 98% of life died out.
A large mass extinction took place at the end
I know it took place in Harlem, New York, but I was also wondering when it took place.
As far as i know it took place in New York As far as i know it took place in New York
many advances took place. i just dont know what they are.
many advances took place. i just dont know what they are.
When we see that there are fossils found in a certain geological layer, which are evidence that a certain species existed at that time, and then in the next geological stratum we no longer find those fossils, and there is no evidence that the species which used to exist still exists, we infer that the species became extinct. If a whole lot of species become extinct at approximately the same time, we call that an extinction event, such as the KT extinction.
The 1927 Indian National Congress took place in Madras, which is now know as Chennai.
Astronauts went to mars and had a interesting theory and had some proof and took tests
The battle of Montreal never took place, do you know why??
hitler maybe I don't know