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geological timeline
enlame Started conversation Oct 8, 2004
Cambrian 545-495 m bc- ocean
Ordovician 495-443 m bc- volcanic islands\ ice age
Carboniferous\ Permian 354-248 m bc- coal created\ ice age\ tidal waves\ volcanic events
Cretaceous 142-65 m bc- chalk\ oil created\ modern world appears\ S England- floodplain\ end of era- volcanic activity\ tidal waves\ layer of clay\ iridium\ forest fires
Pleistocene 1.8 m bc- ice age
Holocene- ice age ends 13 000 bc
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