Abstract
At the boundary between the Palaeocene and Eocene epochs,
about 55 million years ago, the Earth experienced a strong global
warming event, the Palaeocene–Eocene thermal maximum. The
leading hypothesis to explain the extreme greenhouse conditions
prevalent during this period is the dissociation of 1,400 to
2,800 gigatonnes of methane from ocean clathrates, resulting
in a large
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