page_title: Sorthat Formation
section_title: Plant Remains
hierarchical_section_title: Sorthat Formation / Flora / Plant Remains
caption_attribution_description: Stalk of a plant of the Lunz flora with a diameter of ca 1 cm (Neocalamites merianii?)
context_page_description: The Sorthat Formation is a geologic formation on the island on Bornholm, Denmark. It is of latest Pliensbachian-Lower Toarcian age. Plant fossils have been recovered from the formation, along with several traces of invertebrate animals. The Sorthat Formation is overlain by fluvial to lacustrine gravels, along with sands and clay along with parts covered by coal beds, that are part of the Aalenian-Bathonian Bagå Formation. In fact the Sorthat Formation was included on most of late SXX studies as the lowermost part of the Bagå Formation, recovering the latest Pliensbachian to lower Aalenian boundary, that was dismissed after compare the geology of the two. The Sorthat strata recover a mostly marginal deltaic to marine unit, where large streams fluctuated to the east where a large river system was stablished at the start of the Toarcian. At the northwest the local Vulcanism, that started on the lower Pliensbachian, extended along the North Sea and mostly from southern Sweden. At this time, the Central Skåne Volcanic Province and the Egersund Basin expulsed most of his strata, with influences on the local tectonics.
caption: Neocalamites specimen from the Sorthat Formation
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