Article (Scientific journals)
Unattached carbonate platform evolution across the Aptian–Albian boundary: facies, magnetic susceptibility and sequence stratigraphy in the Constantine area of northeast Algeria
Laziz, Ouided; Boulvain, Frédéric; Benabbas, Chaouki et al.
2022In Facies, 68 (4)
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Keywords :
Aptian–Albian; Constantinois platform; Facies; Palaeoenvironments; Sequences; Geology; Stratigraphy; Paleontology
Abstract :
[en] Aptian–Albian palaeoenvironments explored in four sections on the Constantine platform, NE Algeria, are identified based on lithology, sedimentary structures, fossil content and microfacies. A mixed unattached carbonate platform is characterised by lagoonal–reefal facies during the Aptian and clastic–carbonate hemipelagic facies during the Albian. The vertical microfacies trend shows a large-scale deepening, locally interrupted by shallowing-upward sequences, especially during the Lower Aptian. Magnetic susceptibility oscillations recorded in the studied sections reflect several factors which influenced the magnetic signal including platform morphology, sedimentary discontinuities, detrital input and sedimentary condensation events. Three major depositional sequences are distinguished and overall indicate a deepening-up trend that generally coincides with the long-term sea-level rise recorded in Cretaceous strata at this time. The correlations between the studied sections demonstrate uplift of the platform and tilting from north to the south during at least the later part of the upper Aptian. Lithostratigraphic correlations and palaeontological assemblages across the Constantinois platform show that the structural units already mapped as overlapping bodies correspond to Albian strata.
Disciplines :
Earth sciences & physical geography
Author, co-author :
Laziz, Ouided ;  Department of Geological Sciences, University of Frères Mentouri Constantine1, Constantine, Algeria
Boulvain, Frédéric  ;  Université de Liège - ULiège > Département de géologie > Pétrologie sédimentaire
Benabbas, Chaouki;  Centre de Recherche en Aménagement de Territoire (CRAT), Constantine, Algeria
Marmi, Ramdane;  Department of Geological Sciences, University of Frères Mentouri Constantine1, Constantine, Algeria
Benkherouf, Fatiha;  Department of Geology, USTHB, Algiers, Algeria
Ait Abdelouahab, Djaouza;  Department of Geological Sciences, University of Frères Mentouri Constantine1, Constantine, Algeria
Language :
English
Title :
Unattached carbonate platform evolution across the Aptian–Albian boundary: facies, magnetic susceptibility and sequence stratigraphy in the Constantine area of northeast Algeria
Publication date :
October 2022
Journal title :
Facies
ISSN :
0172-9179
eISSN :
1612-4820
Publisher :
Springer Science and Business Media Deutschland GmbH
Volume :
68
Issue :
4
Peer reviewed :
Peer Reviewed verified by ORBi
Funding text :
The authors would like to express their thanks to Boularak Moussa and Laziz Iskandar for their help in the field; Jean-Paul Cullus for the preparation of the thin sections. We are also grateful to Bruno R.C. Granier for help, and to Anne-Christine Da Silva for her constructive notes and encouragement. We are deeply grateful for the constructive criticism and suggestions given by the reviewers Prof. Dr. Etienne Jaillard and the editor Prof. Dr. Maurice Tucker who helped us to express our ideas more clearly.
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