Nice article !
http://www.newscientist.com/article/mg20627631.300-deeper-impact-did-megameteors-rattle-our-planet.html?page=1
from there i went to these links :
http://en.wikipedia.org/wiki/Deccan_Traps
http://en.wikipedia.org/wiki/Shiva_crater
http://en.wikipedia.org/wiki/Chesapeake_Bay_impact_crater
http://en.wikipedia.org/wiki/Popigai_crater
http://en.wikipedia.org/wiki/Sudbury_Basin
http://en.wikipedia.org/wiki/Vredefort_crater
http://en.wikipedia.org/wiki/Slate_Islands_%28Ontario%29
http://en.wikipedia.org/wiki/Shatter_cone
http://en.wikipedia.org/wiki/Silverpit_crater