Permian-Triassic Boundary (IMAGE)

Université de Genève

Permian-Triassic Boundary

Caption

Permian-Triassic boundary in shallow marine sediments, characterised by a significant sedimentation gap between the black shales of Permian and dolomites of Triassic age. This gap documents a globally recognized regression phase, probably linked to a period of a cold climate and glaciation.

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© H. Bucher, Zürich

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