Compile a list of the evidence supporting the impact hypothesis as the cause of the Cretaceous mass extinction. Now, do the same for the flood volcanism hypothesis. Which hypothesis do you think is correct? What evidence can support your idea? Is it possible that both mechanisms (and perhaps others) played a role?

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dyann.cardona · Answer

@pooja195 @Mehek14 can you please help me

warriorz13 · Answer

What grade is this?

instagrammodel · Answer

Here's a good site explaining the Deccan Traps Volcanism and how it could have caused the extinctions. http://filebox.vt.edu/artsci/geology/mcl...

dyann.cardona · Answer

@warriorz13 im in 9th

dyann.cardona · Answer

@phil @aziaboo45

aziaboo45 · Answer

ireally dont know this question

dyann.cardona · Answer

oh okay thank you for at least trying

dyann.cardona · Answer

@pooja195 can you help me with this

dqswag · Answer

Evidence for a bolide impact being the main cause of the K-T event is a worldwide iridium anomaly and spherules, among others (Google it - there's plenty of info on the Cretaceous extinction). This same evidence has been presented as representing a volcanic cause (Google Deccan traps); however, volcanoes generally do not cover much geographical area and probably would not produce such a consistent iridium layer over the entire earth. I would say bolide impact is most likely, but it is also likely that a number of factors contributed to the mass extinction. By studying extinction patterns in various organisms you can deduce the proximal causes, and from those guess at the ultimate causes.

dyann.cardona · Answer

@imclassylikethat can you help me

anonymous · Answer

You have plenty of good resources before you, and biology isn't my best subject.