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Book chapter
English

Stromatolite and serpulid bioherms in a holocene restricted lagoon (Sabkha el Melah, Southeastern Tunisia)

Published inPhanerozoic Stromatolites II, Editors Bertrand-Sarfati, Janine & Monty, Claude, p. 131-151
PublisherDordrecht : Kluwer Academic Publ.
Publication date1994
Abstract

The Sebkha el Melah, located near the Libyan-Tunisian border, is fringed by a relict stromatolite-serpulid belt. These bioherms developed 5500 years ago during the Flandrian sea-level highstand when the area of the present-day sebkha was covered by a wide restricted lagoon. Relict lagoonal beaches and spits, mainly composed of cerebroid ooids and cerithid gastropods, are flanked by mushroom-shaped stromatolites reaching up to 50 cm in height. These stromatolites grew on top of small serpulid bioherms as well as on top of beachrock and beachrock blocks in a shallow subtidal pre-evaporitic realm. The primary porosity of these bioherms is obliterated by botryoidal and spherulitic aragonite, probably of microbial origin. This sub-Recent association of stromatolites, serpulid bioherms and cerebroid ooids provides a useful additional model for the interpretation of upper Paleozoic deposits, where similar facies have been described.

eng
Citation (ISO format)
DAVAUD, Eric Jean, STRASSER, Andréas, JEDOUI, Younes. Stromatolite and serpulid bioherms in a holocene restricted lagoon (Sabkha el Melah, Southeastern Tunisia). In: Phanerozoic Stromatolites II. Dordrecht : Kluwer Academic Publ., 1994. p. 131–151.
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  • PID : unige:155584
ISBN0792327470
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