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10 cards from this deck
1822, Henri Marie Ducrotay de Blainville
Published stratigraphy laws in 1669
Oldest rock layers at bottom, youngest at top
4.5 billion years
50,000-60,000 years old
1.8-2.5 billion years ago
3.5 billion years old
Hamelin Pool, Shark Bay, Western Australia
Approximately 800,000 years old
65 million years ago, 65% of organisms
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