File:Peperite at Puy de Crouel in Auvergne in France.jpg
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Summary
| Description |
English: Peperite at Puy de Crouel in Puy-de-Dôme department, France.
Français : Les pépérites du Puy de Crouel s’observent mieux sur son flanc est.
Elles présentent tantôt un faciès stratifié, tantôt un faciès non stratifié. Dans la premier cas, les bancs dépassent rarement deux centimètres. Ces pépérites sont composées d’une matrice gris clair - qui forme la majorité de la roche - de nature marneuse (calcaire argileux). On retrouve également des fragments basaltiques lobés, caractéristiques des pépérites, dont la forme s’explique par la différence de température entre l’eau et le magma lors de l’éruption. D’autre fragments de basaltes sont anguleux et l’encaissant (des marnes oligocènes) se retrouve également dans la brèche, sous la forme de granules gris clair. |
| Date | |
| Source | https://www.geodiversite.net/media2062 |
| Author | Romain Cadiou (https://www.geodiversite.net/auteur421) |
| Camera location |  | View this and other nearby images on: OpenStreetMap |  |
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| Date/Time | Thumbnail | Dimensions | User | Comment | |
|---|---|---|---|---|---|
| current | 18:27, 12 June 2022 | | 4,608 × 3,456 (16.8 MB) | GeoWriter | Uploaded a work by Romain Cadiou (https://www.geodiversite.net/auteur421) from https://www.geodiversite.net/media2062 with UploadWizard |
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