Abstract
The Pleistocene Borj Edouane in NW Tunisia unit consists of two principal facies associations: (1) calcrete-palustrine-laminar crust facies and (2) microbialites. The laminar crusts consist of millimeter-thick couples (ranging from 0.7 to 3 mm thick) of light (from 0.4 to 2 mm) and dark (from 0.2 to 1 mm) laminae. The laminar alternation represents the succession of events with biological remains under quite hydrodynamic conditions (dark laminae) and of slight erosion and transport episodes by thin water sheets and/or eolian activity (detrital phases, light laminae). The presence of intervening intraclastic-ooidal layers indicate erosive processes and the action of weak sheet flows. The laminar crusts were developed in marginal palustrine environments.
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Acknowledgements
This work was supported by the Ministry of Higher Education and Scientific Research of Tunisia and MINECO CGL2014-54818-P.
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Armenteros, I., Ghannem, N., Regaya, K. (2019). Stromatolitic Origin of Laminar Crusts in Palustrine Environments (Pleistocene of Borj Edouana Unit, Northwestern Tunisia). In: Boughdiri, M., Bádenas, B., Selden, P., Jaillard, E., Bengtson, P., Granier, B. (eds) Paleobiodiversity and Tectono-Sedimentary Records in the Mediterranean Tethys and Related Eastern Areas. CAJG 2018. Advances in Science, Technology & Innovation. Springer, Cham. https://doi.org/10.1007/978-3-030-01452-0_37
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DOI: https://doi.org/10.1007/978-3-030-01452-0_37
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