The Cretaceous-tertiary Extinction Bolide
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Description: Article from Science Frontiers Online arguing that the discovery of a worldwide iridium-rich layer is supporting evidence for the collision of an asteroid or comet with the earth about 65 million years ago.
The Cretaceous-tertiary Extinction Bolide The cretaceous-tertiary extinction bolide The recently discovered worldwide iridium-rich layer is taken by many scientists as evidence of the collision of an asteroid or comet with the earth about 65 million years ago. This cataclysmic event is also blamed (by some, at least) for the apparent sudden biological extinctions recorded on these pages of the fossil record. In this setting, the authors of this paper calculate the effects on the earth of a 10-kilometer-diameter object impacting at about 20/km/sec.
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| Page title: | The Cretaceous-tertiary Extinction Bolide |
| Keywords: | geology,strange,weird,unexplained,bizarre,anomaly,anomalies,anomalous,unusual,unidentified,phenomena,phenomenon,paradox,fortean,forteana,xfiles,x-files,odd,curious,funny |
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| IP-address: | 109.104.89.64 |
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| Date | Creation Date: 25-jan-2000 Expiration Date: 25-jan-2015 |