Les calcaires concretionnes de la limite oligocene-miocene des environs de Saint-Pourcain-sur-Sioule (Limagne d'Allier); role des algues dans leur edification, analogie avec les stromatolites et rapports avec la sedimentation
- 1 January 1966
- journal article
- Published by EDP Sciences in BSGF - Earth Sciences Bulletin
- Vol. S7-VIII (5) , 652-662
- https://doi.org/10.2113/gssgfbull.s7-viii.5.652
Abstract
Various concretionary limestones near the Oligocene-Miocene boundary in the French Central Massif are built predominantly by the activity of cyanophycean algae. The structure, which macroscopically appears very diverse, is microscopically uniform, comparable to certain ancient and modern stromatolites.Keywords
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