Back with a bangPosted: April 29, 2009
Close examination of sedimentary rocks in Mexico near the Chicxulub crater have cast doubt on whether the comet that caused the crater was in fact responsible for the K-T extinction of the dinosaurs.
This has been a popular theory for some time, based on the close correlation between the time period and recognisable rock features that could only come from a huge comet impact.
However, it seems that the great majority of species found in rocks below the period of the impact are found in sedimentary rocks above it, leading the researchers to conclude that the impact had very little, if any, negative impact on the species alive at that time.
This is leading some folks to refocus their attention on the massive eruptions of volcanos at India’s Deccan Traps as a possible alternative for the extinction of the dinoasaurs.