Mid-cretaceous sedimentary core (IMAGE)
Caption
Sediment core from the eastern Indian Ocean, offshore of southwest Australia. Lighter colored sedimentary rocks (below right) are rich in carbonate microfossils deposited before the ocean acidification event, and darker mudstones (left) represent the time interval when ocean acidification occurred. These stones are darker due to the absence of carbonate microfossils caused by more corrosive seawater during the acidification event.
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Matt Jones
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