WHEN most animals die, nature likes to tidy up by making their bodies disappear. The remains get eaten by scavengers, bones are scattered, tissues rot away and anything left over tends to get destroyed by the elements. Very occasionally, though, these destructive processes get disrupted. This usually happens when the corpse is quickly buried by sediment deposited by a river or blown in by the wind. Then begins a slow process in which minerals precipitate from groundwater into the encased organic...
WHEN most animals die, nature likes to tidy up by making their bodies disappear. The remains get eaten by scavengers, bones are scattered, tissues rot away and anything left over tends to get destroyed by the elements. Very occasionally, though, these destructive processes get disrupted. This usually happens when the corpse is quickly buried by sediment deposited by a river or blown in by the wind. Then begins a slow process in which minerals precipitate from groundwater into the encased organic...
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