Triassic palaeogeography of Tunisia

Style of Atlassic tectonic deformation and geodynamic evolution of the southern Tethyan margin, Tunisia

“…2 and 3) (Ben Ayed et al, 1980;Zargouni, 1984;Zargouni et al, 1985;Ben Ferjani et al, 1990;Burrollet et al, 1991;Boukadi, 1994;Zouari et al, 1999;Haji et al, 2014) and result of the collision between Africa and Eurasia. These structures are generally interpreted to be inherited from Triassic and Jurassic to middle Cretaceous rifting periods related with the opening of the southern Tethyan margin (Guiraud and Maurin, 1992;Kamoun et al, 2001;Piqué et al, 2002;Guiraud et al, 2005;Gharbi et al, 2013). Tethyan extensional structures of the southern Atlas of Tunisia have been reactivated in the late Cretaceous-early Paleocene Bracène and Frizon de Lamotte, 2002;Guiraud et al, 2005;Said et al, 2011b;Frizon de Lamotte et al, 2011;Masrouhi and Koyi, 2012;Masrouhi et al, 2013;Gharbi et al, 2013;Van Hinsbergen et al, 2014), middlelate Eocene (Atlassic compression; Bouaziz et al, 2002;Bracène and Frizon de Lamotte, M A N U S C R I P T A C C E P T E D ACCEPTED MANUSCRIPT 5 limestone and claystones.…”

Large euhedral quartz crystals in the Triassic dolomites and evaporites of central Tunisia: implications for silica diagenesis in sulphate-rich and high-Mg environments

“…Contrary to common belief, the presence of green and red clays in the Triassic sedimentary rocks (Kamoun et al 2001), even though they were reworked during uplift, they are considered as a major source of orthosilicic acid in pore fluids for the quartz formation. Clay mineral diagenesis was suggested by Towe (1962), Heling (1978) and Boles and Franks (1979) as a possible source of silica for quartz formation.…”

Gypsiferous carbonates at Honaz Dağı (Denizli): First documentation of Triassic gypsum in western Turkey and its tectonic significance

“…Evaporite formation reached an all time maximum during the Triassic, the late zenith to the break-up phase of Pangea (Gordon, 1975). The main Triassic evaporite deposits are situated in southwestern-central Europe (Germanic and Lorrain basins: Vescei and Duringer, 2003;Fanlo and Ayora, 1998;central-southeast Iberia: Orti, 1987;Jurado, 1990;Salvany, 1990;Serrano and Olmo, 1990;Orti et al, 1996;Zarza et al, 2002), in the Atlas and Saharan platform (Kamoun et al, 2001;Courel et al, 2003), in northern Appennines (Reutter et al, 1983;Lugli, 2001;Lugli et al, 2002), in eastern Europe of the Carpathian Keuper (Marcoux and Baud, 1995), in Israel (Hirsch, 1984), in the Palmirides and Zaros area, northern Arabia (Searle, 1994;Mouty, 1997;Sadooni and Dalqamouni, 1998;Jamal et al, 2000;Makhlouf and El-Haddad, 2006), in the Hellenic Trench (Krahl et al, 1983;Papanikolaou, 1988;Zelilidis et al, 1998;Papaioannou and Karakitsios, 2002), and in Antalya-Tahtalı Dag Unit (Ö zgü l, 1976;Robertson and Woodcock, 1984). These Triassic evaporate-bearing sediments have been separated and moved several kilometers by thrust faults related to the Alpine orogenesis.…”