Can't say what the cause might be, but I guess that enough time for the experts to investigate will pin something down.
The descriptions reminded me of some of the more extensive fossil sites around the world, widespread total ecosystem shutdown ... some have suggested massive methane or CO2 emissions ... none have considered algal blooms before... hmmm <_<
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Quote:
"I don't know...I'm making it up as I go along!" ...Dr I. Jones
"...and your wise men don't know how it fee-e-e-eels...
to be thick as a brick..." J. Tull
"Nature abhors perfection... cats abhor a vacuum!"
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