Thread Closed

Will someone tell me about that crater?

 
Share Thread Thread Tools
Feb10-05, 09:21 AM   #1
Ian
 

Will someone tell me about that crater?


At the northern tip of South America there appears to be a gigantic circular 'crater' dating back millions of years that is only visible from satellite images.

How old? what is it? Its effect?
Any info please.

thanks,
Ian.
PhysOrg.com
PhysOrg
earth sciences news on PhysOrg.com

>> NASA's BARREL mission launches 20 balloons
>> Power of US tornado dwarfs Hiroshima bomb
>> Satellites see storm system that created Moore, Okla., tornado
Feb10-05, 12:59 PM   #2
 
Blog Entries: 2
Recognitions:
Gold Membership Gold Member
Thats probably the Chicxulub crater that allegedly killed the dinosaurs. Scientists are not so sure anymore.

http://www.abc.net.au/science/news/a...sh_1056908.htm
Feb10-05, 01:23 PM   #3
Ian
 
That supposed impact crater is mostly beneath the sea but also appears on land. If it were somewhere else I might accept it as an impact crater, but due to it's geographic location it simply cannot be the remnant of an impact.
Feb10-05, 02:16 PM   #4
 
Blog Entries: 2
Recognitions:
Gold Membership Gold Member

Will someone tell me about that crater?


What's the problem? 63 million years of sedimentation and tectonics is more than enough to build complete mountains on top of it, burying it completely.
Feb14-05, 11:07 AM   #5
Ian
 
Yeah thats right, 60 million years of sedimentation to cover it and 60 milliion years of tectonic motion to break it up. The crater lies on a collision boundary so tectonics should have broken it up not preserved it. It should be severely mis-shapen after all that time.
Feb17-05, 11:15 AM   #6
 
Recognitions:
Gold Membership Gold Member
Quote by Ian
Yeah thats right, 60 million years of sedimentation to cover it and 60 milliion years of tectonic motion to break it up. The crater lies on a collision boundary so tectonics should have broken it up not preserved it. It should be severely mis-shapen after all that time.
Actually, from what I can see, it is quite a distance from the nearest boundary, and outside of the regions of recent tectonic deformation.

http://www3.interscience.wiley.com:8...es/le03_01.jpg

http://www.huttoncommentaries.com/Ot...SAm_P&A750.jpg
Thread Closed
Thread Tools


Similar Threads for: Will someone tell me about that crater?
Thread Forum Replies
calculate crater diameter Biology, Chemistry & Other Homework 0
Tunguska crater found? General Astronomy 2
The age of the Kebira crater General Astronomy 1
Crater size General Physics 6
Question on crater formation General Astronomy 8