"However, the group that discovered the structure in 2002 stands by its original theory of a cataclysmic asteroid or comet impact about 60-65 million years ago. " Their note does place it into one of the major ice sheet coverings, I think.
"However, the group that discovered the structure in 2002 stands by its original theory of a cataclysmic asteroid or comet impact about 60-65 million years ago. "
I don't know what the climate was like in that period. I think the dino's were just clobbered by the Chixlub impact down in Mexico.
"However, the group that discovered the structure in 2002 stands by its original theory of a cataclysmic asteroid or comet impact about 60-65 million years ago. " Their note does place it into one of the major ice sheet coverings, I think.
It was not only the impact that formed the Caribbean Sea, but it was the one that formed the Scotia Sea (simultaneouly), too, that was the cataclysmic impact you describe. Slide presentation here has details: http://www.threeimpacts-twoevents.com/wp-content/uploads/2013/01/SIMULTANEOUS-IMPACTS-3JAN2013-WEBSITE.pdf