
Present day
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Quaternary Glacial (0.126Ma)
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Neogene Pliocene (3Ma)
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Neogene Miocene (8Ma)
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Neogene Miocene (15Ma)
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Paleogene Oligocene (25Ma)
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Paleogene Eocene (40Ma)
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Paleogene Eocene (50Ma)
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Paleogene Paleocene (60Ma)
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Cretaceous-Tertiary (65Ma)
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Late Cretaceous (75Ma)
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Late Cretaceous (85Ma)
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Late Cretaceous (100Ma)
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Early Cretaceous (115Ma)
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Early Cretaceous (130Ma)
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Early Cretaceous (140Ma)
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Late Jurassic (150Ma)
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Middle Jurassic (170Ma)
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Early Jurassic (180Ma)
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from http://cpgeosystems.com/nam.html
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