User:Rolenews/Dinosaurs meteor v volcano

dinosaurs meteor v volcano There are a number of explanations to why the dinosaurs died out and I will be looking at two of them the meteor theory and the volcano theory both differ in some ways but both are similar in others After that I will compare the two and give reasons for them then I will give my point of view

The meteor theory

The meteor theory has a number of startling evidence such as the chixiclub crater where the meteor (baptistina) struck millions of years ago creating a huge impact crater scientists say this impact cause a long and unnatural drop in the earths atmospheric temperature but others say it caused a heat wave killing all dinosaurs (1) Although the speed of extinction cannot be deduced from the fossil record alone, various models suggest that the extinction was extremely rapid. The consensus among scientists who support this theory is that the impact caused extinctions both directly (by heat from the meteorite impact) and also indirectly (via a worldwide cooling brought about when matter ejected from the impact crater reflected thermal radiation from the sun).(1)

The volcano theory

The volcano theory has a number of startling evidence such as a iridium rich layer on the earths surface which could have been caused by great heat and enormous pressure the chixiclub crater could have been caused by melting the rock with lava from one of the biggest volcano’s in the world if this is the case the eruption would have been paroxysmal and killed for hundreds of miles although this does not explain extinction around the world there could have been others erupting at the same time around the planet and if lava reached the oceans it could have killed most sea life and a lot of plant life meaning less food for any possible survivors so they die of starvation and if not the toxic gases would have surely killed them although neither of these theory’s have been proven completely there cases could be argued.

Meteor V Volcano Only one SURVIVES

Iridium where did it come from the meteor meteors are incredibly rich in it but heat and pressure from a volcano could have created it but where would it have been created in the mantle or in the volcano there might not have been the right elements in the mantle but the volcano might not be hot enough If it is the meteor then how would it travel such a distance the explosion would have been huge could a meteor really cause such an explosion and if it did where did it get the iridium in the first place But what about other evidence such as the crater =='''