2024 The sardic tectonic phase in sw sardinia

The sardic tectonic phase in sw sardinia

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Webb1 juni 1991 · Ordovician alluvial fan to marine shelf transition in SW Sardinia, Western Mediterranean Sea: tectonically (“Sardic phase”) influenced clastic sedimentation - ScienceDirect Sedimentary Geology Volume 72, Issues 1–2, June 1991, Pages 97-115 Webb10 apr. 2024 · We present a case study from the external zone of the Variscan fold-and-thrust belt in SW Sardinia, ... ) related to the Sardic Phase , a regional tectonic event affecting the northwestern margin of Gondwana [78,79,80,81]. The Sardic unconformity is covered by the Monte Argentu Fm. (Upper Ordovician), ...

The geological map of Sardinia (Italy) at 1:250,000 scale

Webb23 aug. 2024 · The existence of the slightly compressive "Sardic phase" in SW Sardinia and a quasi-coeval calc-alkaline volcanism and an extensional structural phase ("Sarrabese phase") in central-east Sardinia, suggest transcurrent faulting. Webb14 sep. 2024 · The Sardic Phase: field evidence of Ordovician tectonics in SE Sardinia, Italy - Volume 156 Issue 1 Skip to main content Accessibility help We use cookies to … gift manufacturer’s website

(PDF) ORDOVICIAN GEODYNAMICS: The Sardic Phase in the …

Webbcompressional tectonics in SW Sardinia ( Sardic phase ). Such heterogeneous distribution of the deformation and its spatial variation indicate that during the middle Ordovician, … Webb1 nov. 1998 · Structural investigations in the Variscan fold interference pattern of SW Sardinia (Italy) document an intriguing example of the relationship between cleavage, folding and finite strain. Webb1 okt. 1997 · Role of the Sardic tectonic phase in the metallogenesis of SW Sardinia (Iglesiente); lead isotope evidence. Cecile Caron; Joel Lancelot; Paolo Omenetto; Jean-Jacques Orgeval. View article. PDF. Add to Citation Manager. European Journal of Mineralogy October 01, 1997, Vol.9, 1005-1016. doi: giftmanufactory co. ltd

The Sardic Phase: field evidence of Ordovician tectonics in SE Sardinia …

WebbSardinia are discussed, with the aim to improve our knowledge on the tectono-metamorphic evolution of the northern Sardinian basement and its role in the tectonic … WebbControversial tectonic evolution of the Variscan Belt in Sardinia. According to Carmignani et al. (1992, 1994) and Carosi and Palmeri (2002), during the first collisional phase D 1, … fsa slk seatpost weightWebbSardinia represents a segment of the Southern European Variscan belt showing a complete sequence from the high-grade metamorphic axial zone in the north to the low- grade flysch basin of the external zone in the southwest. gift manufacturing

"Webb24 nov. 2024 · The Ordovician successions are characterized by unconformities related to tectonic events ascribed to the Sardic and Sarrabese phases. The different durations of the unconformity-related gaps in the ... The present revision of data for the best-preserved succession of Sardinian tectonic units suggests that at least two ... " - The sardic tectonic phase in sw sardinia

The sardic tectonic phase in sw sardinia

Transtensional Tectonics Played a Key Role during the Variscan …

WebbThe non-volcanic sequence of SW Sardinia analyzed in this paper was probably formed in basins developed on the northern margin of the Gondwanaland craton. This Sardinian … Webbcontroversy e xists over their interpretation. One example is the Sardic unconformity in SW Sardinia. This was identified and used by Stille in 1920s to identify a Sardic orogenic phase in the Ordovician. Yet, it may represent a block-tilting phase during a longterm extensional phase on the northern - continental margin of Gondwana.

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Webb5 sep. 2024 · Ordovician tectonics in Sardinia is referred to the S ardic phase, as in other parts of the Variscan belt where similar and roughly coeval stratigraphic, t ectonic and … WebbThe so-called Sardic Phase was originally described in SW Sardinia (Stille, 1939) as an “early Caledonian” structural event characterized by an angular unconformity associated with metallogenic emplacement of ore deposits, E-W-trending faulting and mild folding.

Webb14 sep. 2024 · Detailed geological mapping, field observations and structural analyses demonstrate that Early Ordovician (‘Sardic’) deformation occurred in the early Palaeozoic … WebbThe Sardic deformation in SE Sardinia occurred during Early–Middle Ordovician time. The youngest sediments deformed by the Sardic tectonic event contain Arenig fossils (SE Sardinia: Gnoli & Pillola, 2002; SW Sardinia: Pillola, Piras & Serpagli, 2008), while the oldest formations of known age unaf-fected by the Sardic event are the Middle ...

Webb14 sep. 2024 · Abstract Detailed geological mapping, field observations and structural analyses demonstrate that Early Ordovician (‘Sardic’) deformation occurred in the early … WebbEvidence of the Sardic deformation in SE Sardinia is largely obscured due to overprinting by polyphase Variscandeformation.Weundertookdetailedmapping of the Sarrabus Unit in …

WebbSardinia Island is located in the middle of the Central-Western Mediterranean ( Figure 1) and, together with Corsica Island, is a 30 km-thick crustal block bounded by two areas affected by extensional tectonics: the Liguro-Provençal basin to the West and the Tyrrhenian basin to the East, where the crust has been stretched in the last 20 and 8 Ma, …

Webb13 juli 2024 · The most accepted geodynamic model for the Sardic phase in Sardinia is an Andean-type subduction zone, where the Foreland zone, the External nappes and the … fsa sl-k compact carbon road handlebarWebbThe studies will consist of: fine analysis of the intercrystalline textures of the mineral and the enveloping strata and comparison with the deformed Cambrian minerals of southern Sardinia; a joint structural study of the bed and its sedimentary cover (Trias, Lias); and exploration of the tectonic phase associated with the Liassic remobilization which is … fsa slk seatpost reviewWebbaccompanied the Ordovician Sardic phase is verified, while some light is shed on the nature and geological significance of this tectonic phase. Geological framework The metamorphic basement of Iglesiente–Sulcis (Fig.a, 1 b) belongs to the External Zone, which is the southern-most segment of the Variscan chain in Sardinia. Moving fsa slk megaexo carbon cranksetWebb1 okt. 1997 · Role of the Sardic tectonic phase in the metallogenesis of SW Sardinia (Iglesiente); lead isotope evidence. Cecile Caron; Joel Lancelot; Paolo Omenetto; Jean … fsa slowpitchWebb13 juli 2024 · The first deformative phase, known as the Sardic Phase (Stille 1939), is defined on the basis of the angular unconformity first detected in SW Sardinia (Sardic Unconformity: Teichmüller... fsa slk crankset weightWebbAbstract. A geochemical comparison of early Palaeozoic felsic magmatic episodes throughout the south-western European margin of Gondwana is made and includes (i) Furongian–Early Ordovician (Toledanian) activities recorded in the Central Iberian and Galicia–Trás-os-Montes zones of the Iberian Massif, and (ii) Early–Late Ordovician … gift manufacturing companiesWebbThe first step of this thesis was to characterize the Sardic Phase in its type area, which includes a historical reappraisal of the stratigraphic, sedimentary, structural and … fsa smart choice