Abstract The Protocanites Beds of the Black Forest Massif (Germany) form an important lithostratigraphic key bed, as index fossils contained in this formation enable correlation within large areas internal zone central Variscan Belt Europe. Furthermore, provides significant information on geodynamic evolution Moldanubian Zone. stratigraphic age has been a subject controversy past; Devonian to V...

A wide range of carbon isotope values in the Devonian fossil Prototaxites has been interpreted to support heterotrophy and the classification of Prototaxites as a giant fungus. This inference remains controversial because of the huge size of Prototaxites relative to co-occurring terrestrial vegetation and the lack of existing fungal analogues that display equally broad isotopic ranges. Here, we...

• Ordovician and Lower Devonian OMZ rocks contain an important 1 Ga detrital zircon population. Sahara metacraton provided the grains in Ordovician-Devonian rocks. equivalent terranes were translated eastwards during final Cadomian tectonics. The Ossa-Morena Zone Iberia, northern France Central Europe, are thought to be paleogeographically linked West African Craton at Ediacaran early Paleozoic...

Abstract The Ulungarat Basin of Arctic Alaska is a unique exposed stratigraphic record the mid-Paleozoic transition from Romanzof orogeny to post-orogenic rifting and Ellesmerian passive margin subsidence. succession composed both syn-rift post-rift deposits recording this transition. unconformably overlie highly deformed orogenic basement on regional angular unconformity are overlain by Endico...

The article presents an overview of the main stages magmatism and ore mineralization copper other metals Tekturmas ophiolite belt related structures Central Kazakhstan. age, composition probable tectonic settings during formation Cu-Ni deposits in Kazakhstan associated with sulfide are discussed. includes formations three lithological types: basaltic Karamurun Kuzek formations, siliceous Bazarb...

Depositional environment and source potential of the different organic-rich levels of Devonian age (up to 990m thick) from the onshore EC-1 well (Southern Tunisia) were investigated based on the analysis of more than 130 cutting samples by different geochemical techniques (Rock-Eval pyrolysis, GC-MS). The obtained results including Rock Eval Pyrolysis data and biomarker distribution (terpanes, ...

Understanding the formation of North Qilian Shan in NE Tibetan Plateau provides insights into growth mechanisms northern region plateau across time. Detrital zircon fission-track (ZFT) analyses river sediments can provide a comprehensive understanding exhumation history during prolonged orogenesis. Here, we applied detrital thermochronology approach to orogenic belt. This work presents first si...

Abstract. In the Late Devonian to earliest Mississippian, Svalbard was affected by a short-lived episode of deformation named Svalbardian Orogeny. This event resulted in intense folding and thrusting sedimentary successions. Deformation stopped prior deposition Carboniferous Permian strata Billefjorden Gipsdalen groups, which lie unconformably over folded strata. Later on, presumed structures w...

The Devonian–Carboniferous transition was marked by a series of perturbations in the geological and biological evolution. palaeontological data from Transcaucasia allowed bryozoan diversity dynamics on northern Gondwanan margin (southern periphery Palaeo-Tethys Ocean) to be documented at this transition. Taxonomic ranges 43 species, 26 genera, 19 families, 4 orders were analysed reveal changes ...