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The Lichançumendy tilted block. A: geological map. I – Paleozoic; II – Triassic (limestones and marls); III – Liassic (Dolostones and limestones); IV – Dogger (ammonite-bearing limestones); V – Diapiric breccias (Early Cretaceous); VI – Clansayesian (Uppermost Aptian limestones and black spicule marls); VII – Clansayesian mudmound; VIII – Lower Albian (black spicule marls). B: Cross-section showing the norward gliding of the Lichançumendy unit, probably after the major rifting stage. C: The Chapeau de Gendarme view showing the relationship between the diapiric breccias underlying the Clansayesian marls and limestones. Note the northwestward progradation of coral reefs within this late unit.
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