First of all, do you understand what is meant by a global fire in these?
'Giant asteroid that wiped out dinosaurs from Earth fell in India' - Brahmand.com
The tremendous impact would have ignited global fires, initiated tsunamis, destroyed coastal habitats, produced acid rains, turned seawater acidic, dissolved carbonate-shelled animals and devastated the biosphere. Millions of organisms would have died instantly from the tremendous tremor and the global fire generated from the impact.
NEW EVIDENCE INDICATES GLOBAL FIRESTORM KILLED OFF DINOSAURS | Deseret News
Scientists Wednesday published new evidence to bolster a controversial theory that dinosaurs went extinct because of a global firestorm sparked by the impact of a giant meteorite.
More Confusion At The K-T Boundary
[FONT=Arial,helvetica]Evidence of a global fire. Soot appears at the K-T boundary at many sites, but where did it come from? Chemical analyses of these soots show an enhanced concentration of polycyclic aromatic hydrocarbons over soots above and below the boundary. This is strong evidence of pyrolytic action at the K-T boundary; i.e., widespread fires. (Venkatesan, M.I., and Dahl, J.; "Organic Geochemical Evidence for Global Fires at the Cretaceous/Tertiary Boun dary," Nature, March 2, 1989.) Fire could have been initiated by either volcanism or impacts.[/FONT]