Tidally dominated Miocene deltaic deposits and pipe rocks in the Tebessa Basin, eastern Algeria: sedimentological and ichnological characteristics

نویسندگان

چکیده

Abstract Analyses of sedimentology, ichnology and depositional environments Langhian–Tortonian siliciclastic deposits in the southern Tebessa Basin (eastern Algeria) have revealed a tidally dominated deltaic setting with high concentration vertical burrows. From south to north, two are here distinguished Basin: subaerial lower delta plain Oum Ali region trace fossils Ophiomorpha Skolithos linearis , proximal front numerous situated Hjer Essefra area. The occurrence pipe rock this Miocene subtidal domain is unusual. Pipe rocks been commonly reported from shallow well-oxygenated environments, especially Cambrian strata; their number decreased significantly during Ordovician, coupled an increase biodiversity. Here different subenvironments tidal signals that exceptionally well preserved outcrops analysed interpreted. Different ichnotaxa briefly described, uncommon density size pipe-rock these strata discussed.

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ژورنال

عنوان ژورنال: Geologos

سال: 2021

ISSN: ['1426-8981', '2080-6574']

DOI: https://doi.org/10.2478/logos-2021-0002