Structuring and evolution of Neogene transcurrent basins in the Tellian foreland domain, north-eastern Tunisia

Melki, Fetheddine; Zouaghi, Taher; Harrab, Salah; Sáinz, Antonio María Casas; Bédir, Mourad; Zargouni, Fouad

doi:10.1016/j.jog.2010.11.009

Cited by 88 publications

(43 citation statements)

References 42 publications

(51 reference statements)

Supporting

Mentioning

Contrasting

Order By: Relevance

“…At the regional scale, the location of the basin of Jalta is mainly controlled by two main structural trends [12]: N30 Ras El Korane-Thibar major fault on the northwest side and Messeftine N-S fault on the eastern side accompanied on the southern side by the secondary N140E Mateur fault. At the deposit scale, the main structural features in and around the Jalta district consist mostly of strike-slip faults and few normal faults [4,13], having different orientations (Figure 2).…”

Section: Jaltamentioning

confidence: 99%

Lead Isotopes as Tracers of Metal Sources and Timing of the Carbonate-Hosted Pb-Zn Deposits in the Nappes Zone, Northern Tunisia

Jemmali¹,

Souissi²

2018

Contributions to Mineralization

View full text Add to dashboard Cite

The polymetallic deposits in the Nappes zone, Northern Tunisia occur in the contact between Triassic-Miocene/Eocene carbonate rocks and in the Upper Cretaceous limestones. They can be divided into two groups: one is Pb-Zn mineralization with Hg and As in fractures with local intrusions of Neogene volcanics (e.g., Fej Hassene, Oued Maden), and the second is stratabound and karst Pb-Zn mineralization with arsenic and antimony hosted in the continental Neogene strata or situated immediately below them (Aïn Allega, Sidi Embarek, Jebel Hallouf-Sidi Bou Aouane, Bazina, Jalta and Jebel Ghozlane). Pb-isotopic compositions of galenas display a homogeneous Pb isotope signature. Generally, Pb isotope ratios on ores from the Jalta, Jebel Ghozlane, Jebel Hallouf, Oued Maden and Fedj Hassene plot between samples of the Late Miocene igneous rocks and the sedimentary country rocks of the Nefza area and between the upper crust and orogen curves. This intermediate position may imply potential mixing between end-member sources. Because the Pb-Zn mineralization is fault-controlled and spatially associated with the post-nappe Miocene series and the calculated model age is about 10.86 Ma, one is led to argue that the mineralization in the Nappes zone deposits occurred during the last paroxysmal phase of the Alpine folding (i.e., Miocene age).

show abstract

Section: Jaltamentioning

confidence: 99%

Lead Isotopes as Tracers of Metal Sources and Timing of the Carbonate-Hosted Pb-Zn Deposits in the Nappes Zone, Northern Tunisia

Jemmali¹,

Souissi²

2018

Contributions to Mineralization

View full text Add to dashboard Cite

show abstract

“…The Pelagian Platform forms part of the Pelagian Province that extends offshore into shelf area of northern Libya and east-central Tunisia, and northwards towards Malta (Kett, 2001). Within the studied area, the North-South axis is expressed by the Zaghouan fault, which in Jurassic times was an extensional structure that controlled the location of the eastern margin of a marine carbonate platform; the Zaghouan Fault delineated the 'Tunisian Furrow' structural domain where this carbonate platform was located (Ben Ayed & Viguier, 1981;Chihi, 1995;Saadi, 1990;Melki, Zouaghi, Ben Chelbi, B edir, & Zargouni, 2010& Melki et al, 2011Hezzi, 2014;Figure 1a). Within the studied area, the North-South axis is expressed by the Zaghouan fault, which in Jurassic times was an extensional structure that controlled the location of the eastern margin of a marine carbonate platform; the Zaghouan Fault delineated the 'Tunisian Furrow' structural domain where this carbonate platform was located (Ben Ayed & Viguier, 1981;Chihi, 1995;Saadi, 1990;Melki, Zouaghi, Ben Chelbi, B edir, & Zargouni, 2010& Melki et al, 2011Hezzi, 2014;Figure 1a).…”

Section: Geologic Settingmentioning

confidence: 99%

“…The western boundary of the Pelagian Platform is located onshore Tunisia, along the so-called 'North-South axis' (Figure 1;Ben Ayed & Viguier, 1981). Within the studied area, the North-South axis is expressed by the Zaghouan fault, which in Jurassic times was an extensional structure that controlled the location of the eastern margin of a marine carbonate platform; the Zaghouan Fault delineated the 'Tunisian Furrow' structural domain where this carbonate platform was located (Ben Ayed & Viguier, 1981;Chihi, 1995;Saadi, 1990;Melki, Zouaghi, Ben Chelbi, B edir, & Zargouni, 2010& Melki et al, 2011Hezzi, 2014;Figure 1a). This Mesozoic margin is characterized by N-S to SW-NE trending grabens that formed related to E-W/NW-SE polyphase extension, crustal thinning and subsidence; these grabens accommodated syn-rift successions of Lower Jurassic to Aptian marls and carbonates (Morgan et al, 1998;Figure 1b).…”

Section: Geologic Settingmentioning

confidence: 99%

Basin tectonic history and paleo‐physiography of the pelagian platform, northern Tunisia, using vitrinite reflectance data

et al. 2018

View full text Add to dashboard Cite

Constraining the thermal, burial and uplift/exhumation history of sedimentary basins is crucial in the understanding of upper crustal strain evolution and also has implications for understanding the nature and timing of hydrocarbon maturation and migration. In this study, we use Vitrinite Reflectance (VR) data to elucidate the paleo-physiography and thermal history of an inverted basin in the foreland of the Atlasic orogeny in Northern Tunisia. In doing so, it is the primary aim of this study to demonstrate how VR techniques may be applied to unravel basin subsidence/uplift history of structural domains and provide valuable insights into the kinematic evolution of sedimentary basins. VR measurements of both the onshore Pelagian Platform and the Tunisian Furrow in Northern Tunisia are used to impose constraints on the deformation history of a long-lived structural feature in the studied region, namely the Zaghouan Fault. Previous work has shown that this fault was active as an extensional structure in Lower Jurassic to Aptian times, before subsequently being inverted during the Late Cretaceous Eocene Atlas I tectonic event and Upper Miocene Atlas II tectonic event. Quantifying and constraining this latter inversion stage, and shedding light on the roles of structural inheritance and the basin thermal history, are secondary aims of this study. The results of this study show that the Atlas II WNW-ESE compressive event deformed both the Pelagian Platform and the Tunisian Furrow during Tortonian-Messinian times. Maximum burial depth for the Pelagian Platform was reached during the Middle to Upper Miocene, i.e. prior to the Atlas II folding event. VR measurements indicate that the Cretaceous to Ypresian section of the Pelagian Platform was buried to a maximum burial depth of~3 km, using a geothermal gradient of 30°C/km. Cretaceous rock samples VR values show that the hanging wall of the Zaghouan Fault was buried to a maximum depth of <2 km. This suggests that a vertical km-scale throw along the Zaghouan Fault pre-dated the Atlas II shortening, and also proves that the fault controlled the subsidence of the Pelagian Platform during the Oligo-Miocene. Mean exhumation rates of the Pelagian Platform throughout the Messinian to Quaternary were in the order of 0.3 mm/year. However, when the additional effect of Tortonian-Messinian folding is accounted for, exhumation rates could have reached 0.6-0.7 mm/year.---

show abstract

“…Elsewhere in North Africa, other petroliferous basins are the Chad and Niger Delta rift basins. Post-nappe Neogene sedimentary basins (Serravallian to Quaternary), some of which host significant mineral resources (Pb, Zn, Fe, and bentonite principally), occur in the Alpine Rif-Tell belt that extends from Morocco to Tunisia (Decrée et al 2008a, b;Melki et al 2011, and references therein).…”

Section: Cenozoic Basins and Related Tertiary To Quaternary Igneous Rmentioning

confidence: 99%

Geologic and Metallogenic Framework of North Africa

Bouabdellah

Slack

2016

Mineral Deposits of North Africa

View full text Add to dashboard Cite

North Africa is noteworthy for having a great diversity of geology and mineral resources. Geologically, the region contains numerous terranes that contain rocks ranging in age from Archean to Quaternary, including diverse igneous, sedimentary, and metamorphic lithologies. Major geological features were built during the main phases of Proterozoic and subsequent Phanerozoic orogenies, the break-up of the supercontinents Rodinia, Gondwana, and Pangea, and during the opening and closing of major ocean basins such as the Iapatus, Atlantic, Pacific, and Tethys. Three major tectono-stratigraphic domains are recognized (1) the Precambrian province that includes the African-Nubian Shield (ANS) to the east and the West African Craton (WAC) to the west, and the intervening Tuareg Shield and "Saharan Metacraton"; (2) the Variscan (Paleozoic) fold belt; and (3) the Atlas-Alpine (Mesozoic-Cenozoic) system. Mineral deposits of North Africa formed in a variety of geologic settings at different time periods from Archean to Quaternary. Mineral commodities including gold, silver, cobalt, nickel, chromium, arsenic, copper, lead, zinc, iron, and many other elements. Major deposit types present in the region are (1) orthomagmatic Cr-Ni-platinum group elements (PGE); (2) rare-metal granites and related rare-element pegmatites; (3) volcanic-hosted massive sulphide (VHMS); (4) sedimentaryexhalative (SEDEX); (5) orogenic and intrusion-related gold; (6) iron oxide-copper-gold (IOCG); (7) banded iron formation (BIF); (8) Mississippi Valley-type (MVT) lead-zinc; (9) sediment-hosted stratiform copper;Electronic supplementary material The online version of this chapter

show abstract

Structuring and evolution of Neogene transcurrent basins in the Tellian foreland domain, north-eastern Tunisia

Cited by 88 publications

References 42 publications

Lead Isotopes as Tracers of Metal Sources and Timing of the Carbonate-Hosted Pb-Zn Deposits in the Nappes Zone, Northern Tunisia

Lead Isotopes as Tracers of Metal Sources and Timing of the Carbonate-Hosted Pb-Zn Deposits in the Nappes Zone, Northern Tunisia

Basin tectonic history and paleo‐physiography of the pelagian platform, northern Tunisia, using vitrinite reflectance data

Geologic and Metallogenic Framework of North Africa

Contact Info

Product

Resources

About