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The stratigraphical features and palaeoenvironmental conditions of the upper Cenomanian–lower Coniacian carbonates from the northern part of the Aures Range are described for the first time. Four formations have been recognised, namely the Arris, Adahri, Yabous, and Bou Ouali, respectively. Planktonic foraminifera enable us to assign the upper part of the Arris Formation and the lower part of the Adahri Formation to the Middle–Upper Cenomanian (Rotalipora sp. cf. R. cushmani Total Range Zone), the upper part of the Adahri Formation to the Cenomanian–Turonian Transition to the lower Turonian (Whiteinella archaeocretacea Partial Range Zone and Helvetoglobotruncana helvetica Total-Range Zone, respectively), the lower member of the Yabous Formation to the middle Turonian (Marginotruncana sigali Partial Range Zone), and the upper member of the Yabous Formation to the upper Turonian (Marginotruncana schneegansi Partial Range Zone). The Turonian–Coniancian boundary was dated approximately. This biozonation enables a correlation with several upper Cenomanian–lower Coniacian sections outside Algeria, mainly within the Tethyan and Boreal domains. Based on the field data, and microfacies studies, the strata of these formations are arranged into eleven microfacies types (MT 1 to MT 11) that are described in terms of depositional environments, and grouped into three main facies associations (FA 1, FA 2, and FA 3): (i) a deep shelf-basin facies zone; (ii) marginal sand shoals, an open-marine/restricted platform facies zone; and (iii) an outer platform and toe-of-slope/distal slope facies zone. Analysis of the sequence stratigraphy has allowed the recognition of three third-order depositional sequences grouped into two megasequences and correlated to a regional scale. [ABSTRACT FROM AUTHOR]

Résumé Une approche intégrant les données lithologiques, micropaléontologiques et statistiques a été menée sur les échantillons provenant de 4 coupes (El Gaâga, Tighanimine, Menaa et El Kantara) implantés en domaines de plate-forme différenciée. Elle a permis de redéfinir la stratigraphie du transect étudié, d’apporter les informations sur les préférences paléoécologiques de taxons de foraminifères benthiques, planctoniques et d’ostracodes et de décrypter des espèces indicatrices des paléoenvironnements au cours du Crétacé terminal (Campanien-Maastrichtien). Le Campano-Maastrichtien dans les Aurès s’organise en paysages sous forme de doubles collines séparées par une partie médiane en légère dépression. Cette morphologie correspond à la composition généralement tripartite du Campanien-Maastrichtien avec un membre inférieur d’alternance marno-calcaire (membre Haraoua), un membre médian marneux (Membre Akhdar) et un membre supérieur de calcaires massifs (Membre Ncham). La régularité de cette trilogie est modifiée dans l’anticlinal de Dj. El Azereg par des réductions, voire des lacune, affectant visiblement les trois membres. L’inventaire des principaux foraminifères du Crétacé terminal (Campanien-Maastrichtien) de l’Aurès se solde par la détermination de 141 espèces (dont 93 de foraminifères benthiques et 48 de planctoniques). L’application des concepts de la biostratigraphie sur l’ensemble des foraminifères planctoniques permis de distinguer différentes biozones, comprises entre le Campanien inférieur à El Gaâga et El Kantara (biozone à Globotruncanita elevata ) et le Maastrichtien (biozone à Contusotruncana contusa ). La biostratigraphie ainsi établie se révèle relativement fonctionnelle bien que l’absence de certains marqueurs ne permette pas une zonation très précise. An integrated study of the lithological, micropaleontoligical, sedimentological and statistical data has been done on samples taken from four geological sections (El Gaaga, Tighanimine and El Kantara) spread in different sea areas. This allowed to redefine the stratigraphy of the studied area to provide information about the benefits of some kinds of foraminifera, planktonic and ostracods in knowing the palaeoenvironment and identifying the types referring to the latter during the late cretaceous. The late creataceous appeared in Aures in a form of two hills separated by a light lowness. This morphology corresponds generally to the tripartite composition of the Campanian-Manstrichtian with lower member of limestone-marl (Haraoua Member), a median marl member (Akhdar Member) and an upper member of massive limestones (Ncham member). The regularity of this trilogy changed in the anticline of Dj. El Azereg through a reduction, visibly affecting the tree members. The study of the foraminifera in the late cretaceous (Campanian-Manstrichtian) in the Aures proved the existence of 141 species (48 planktonic and 93 benthic foraminifera). Applying the concepts of biostratigraphy mainly on the foraminifera allowed to distinguish different bizones, ranging from lower Campanian of El Gaaga and El Kantara cuts ( Globotruncanita elevata biozone) and Maastrichtian ( Contusotruncana contusa biozone). The biostratigraphical framework is thus relatively precise and helps precising for instance the position of some inconsistent boundaries. [ABSTRACT FROM AUTHOR]

This paper is a study focuses on two concepts often used in political and scientific debates, namely urban renewal and sustainable development.The objectives of this study are, on the one hand, the analysis of the process of spontaneous urban renewal in the former Aurasian settlements and the search for a link between this process and the requirements of sustainable development, on the other hand. To do this, we chose the Dechra Beida, one of the oldest and most important human settlements of both the Aures and the agglomeration of Arris. Our approach consists of a comparative analysis of the urban fabric of the Dechra Beida on three different dates (1962, 2010 and 2016) and the data processing was carried out using the software QGIS (2.18.2) and Fractalyse (2.4.1).The results show that spontaneous urban renewal is a process that underpins the development of ancient human settlements and thus fits well with the objectives of sustainability. This is clearly highlighted by the rational use of natural resources as well as the recycling and reconstruction of the urban fabric, which limit the sprawl and waste of peripheral areas. [ABSTRACT FROM AUTHOR]

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Copyright of Revue de Micropaleontologie is the property of Elsevier B.V. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)