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DescriptionFossil Forest, West Lulworth, Dorset - geograph.org.uk - 603310.jpg
English: Fossil Forest, West Lulworth, Dorset The Fossil Forest provides a fascinating insight into conditions prevailing in the Upper Jurassic period, 135 million years ago. They are on a ledge some 25 metres above the sea. On this ledge are some ring-shaped structures up to 2m across. These are moulds of gymnosperms (early coniferous trees) which died after being encased in sediment. Most of the trees were upright leaving round holes, but some had fallen leaving elongate coffin-shaped moulds.
Français : Traces fossilisées d'arbres datés du Jurassique supérieur (-135 millions d'années environ). Ils sont situés sur un rebord de falaise, à environ 25 mètres au-dessus de la mer (à West Lulworth, Dorset|Dorset). Les "anneaux" (jusqu'à 2m de large) visibles sur cette corniche sont des moulages d'arbres appartenant au sous-embranchement paraphylétique de sgymnospermes (ayant également produit les conifères contemporains). Le trou correspond au troncs des arbres morts après avoir été ensevelis dans des sédiments. La plupart des arbres ont été ensevelis debout, laissant des trous ronds, mais certains étaient tombés. Ces derniers ont laissé une forme allongée
See also :
Ian M. West (1975), Evaporites and associated sediments of the basal Purbeck Formation (Upper Jurassic) of Dorset, Proceedings of the Geologists' Association ; Volume 86, Issue 2, 1975, Pages 205–225 (Summary/résumé)
M.E. Pugh, Algae from the Lower Purbeck limestones of Dorset ; Proceedings of the Geologists' Association , Volume 79, Issue 4, 1968, Pages 513–523, IN3–IN8 (abstract/résumé)
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== {{int:filedesc}} == {{Information |description={{en|1=Fossil Forest, West Lulworth, Dorset The Fossil Forest provides a fascinating insight into conditions prevailing in the Upper Jurassic period, 135 million years ago. They are on a ledge some 25 metr
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