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title of the reference :
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Archaeoglobitruncana kefiana foraminiferal zone of the basal tethyan maestrichtian.
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Publication Date:
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1987
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Author :
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Salaj Jozef, Maamouri Annie-Louise
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Catalogue type :
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Livre
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Catalogue reference :
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(CSK) Geol. Zb. Archaeoglobitruncana kefiana foraminiferal zone of the basal tethyan maestrichtian. La zone à foraminifères Archaeoglobitruncana kefiana du Maestrichtien basal de la Tethys. Appearence of Archaeoglobitruncana kefiana and Archaeoglobitruncana praekefiana n. sp. determines the maastrichtian base in Tunisia. In the area of the El Kef, they are found together with the lower Maastrichtian ammonite species Pseudokossmaticeras brandti. The foraminifer association of the Globitruncana stephensoni zone overlying the radotruncana calcarata zone and underlying the Archaeglobitruncana kefiana zone contains a microfauna of Campanian character. Its thickness in the Tunisian trough is relatively considerable, whereas in the region of the tunisian platform (condensed sedimentation)already belonging to the pelagic bloc,thickness of this zone does not attain more than 1m.The Archaeoglobitruncana kefiana zone s.s. in both these sedimentation zones corresponds to a period of distinct pelagic sedimentation, connected relatively also with greatest deeping of sea at the Campanian-Maastrichtian boundary. bibliogr. faune foraminifère ; plancton ; calcaire ; limite stratigraphique ; corrélation ; Tethys ; Crétacé supérieur ; Maestrichtien ; Campanien ; formation Abiod ; globotruncana ; Archaeoglobotruncane kefiana ; Tunisie ; Tunisie Nord Occidentale ; Le Kef Maamouri Annie-Louise Salaj Jozef Stratigraphie
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Indexation decimale :
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Stratigraphie
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Keywords :
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faune foraminifère ; plancton ; calcaire ; limite stratigraphique ; corrélation ; Tethys ; Crétacé supérieur ; Maestrichtien ; Campanien ; formation Abiod ; globotruncana ; Archaeoglobotruncane kefiana ; Tunisie ; Tunisie Nord Occidentale ; Le Kef
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Summary :
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Appearence of Archaeoglobitruncana kefiana and Archaeoglobitruncana praekefiana n. sp. determines the maastrichtian base in Tunisia. In the area of the El Kef, they are found together with the lower Maastrichtian ammonite species Pseudokossmaticeras brandti. The foraminifer association of the Globitruncana stephensoni zone overlying the radotruncana calcarata zone and underlying the Archaeglobitruncana kefiana zone contains a microfauna of Campanian character. Its thickness in the Tunisian trough is relatively considerable, whereas in the region of the tunisian platform (condensed sedimentation)already belonging to the pelagic bloc,thickness of this zone does not attain more than 1m.The Archaeoglobitruncana kefiana zone s.s. in both these sedimentation zones corresponds to a period of distinct pelagic sedimentation, connected relatively also with greatest deeping of sea at the Campanian-Maastrichtian boundary.
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Exemplaries :
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TU1582
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