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Stratigraphy and palaeontology of the lower Miocene Kiel Sand Member (Berchem Formation) in temporary exposures in Antwerp (northern Belgium)
Everaert, S.; Munsterman, D.K.; De Schutter, P.; Bosselaers, M.; Van Boeckel, J.; Cleemput, G.; Bor, T.J. (2020). Stratigraphy and palaeontology of the lower Miocene Kiel Sand Member (Berchem Formation) in temporary exposures in Antwerp (northern Belgium). Geol. Belg. 23(3-4): 167-198. https://dx.doi.org/10.20341/gb.2020.025
In: Geologica Belgica. Geologica Belgica: Brussels . ISSN 1374-8505; e-ISSN 2034-1954, meer
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| Trefwoorden |
Phanerozoic > Geological time > Cenozoic > Tertiary > Cenozoic > Neogene > Miocene > Aquitanian
Phanerozoic > Geological time > Cenozoic > Tertiary > Cenozoic > Neogene > Miocene > Burdigalian
Elasmobranchii [WoRMS]; Mollusca [WoRMS]
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| Author keywords |
dinoflagellate cysts, taphonomy, North Sea Basin |
| Auteurs | | Top |
- Everaert, S.
- Munsterman, D.K., redacteur
- De Schutter, P.
- Bosselaers, M.
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- Van Boeckel, J.
- Cleemput, G.
- Bor, T.J.
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| Abstract |
The stratigraphic position of the lower Miocene Kiel Sand Member of the Berchem Formation in the Antwerp area (northern Belgium) is not well constrained and its depositional environments are poorly known. Due to a spatial limited decalcification front, the Kiel Sand Member is completely decalcified in southern Antwerp and gradually becomes fossiliferous to the north-east of the city. The stratigraphy and palaeontology of the fossiliferous sediments in three temporary exposures are presented. The dinoflagellate cyst analysis of fossiliferous horizons shows the relative progress of a transgression in the southern North Sea Basin during the early–middle Burdigalian, that probably initiated in the late Aquitanian. The Kiel Sand Member contains an important mollusc fauna, with several species reported for the first time from this member. The taphonomy and fauna of the shell beds indicate a shallow marine, high energetic depositional environment, strongly influenced by storms, currents, waves and a rather low sedimentation rate. The climate was warm-temperate to subtropical. In all studied sections, the Kiel Sand Member could be clearly distinguished from the Antwerpen Sand Member: similarities and differences are discussed. Moving to the north of Antwerp, the erosive base of the Antwerpen Sand Member cuts deeper into the Kiel Sand Member. The Early Miocene Unconformity (EMU) is suggested at this contact. |
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