Abstract Several brachiopod-rich mud mounds occur in the upper Visean (Brigantian) of Derbyshire Carbonate Platform succession UK. The re-evaluation lithofacies architecture a mound complex, developed an intraplatform middle-ramp environment, led to recognition three associations: (a) 10 m thick basal unit automicrite boundstone with siliceous sponge spicules and brachiopod–bryozoan packstone w...

This paper present new U–Pb geochronological data (LA-ICP MS on zircon) of granitoids from the Moroccan Meseta Variscan belt. Zircons Oulad Ouaslam granodiorite in Jebilet massif Western highlight a peak magmatic activity at 335.2 ± 0.8 Ma. In Eastern Meseta, ages obtained several facies High Moulouya complex restrained its to early Visean: 339.6 1.9 Ma for Perdreaux granite, 337 1.6 calc-alkal...

Abstract The paper presents a study of Lower Carboniferous (Visean) clastic sequence commonly called Bobrikovsky Formation, deposited in the Volga-Ural Petroleum Province, Orenburg Region. Our investigation included sedimentological description core samples from hydrocarbon wells and well log correlations. Facies were identified by patterns calibrated sedimentology. Formation is proposed to be ...

Abstract The Mississippian (Tournaisian–Visean) of the Jbel Asdaf area in Tisdafine Basin (Eastern Anti-Atlas, Morocco) has been, for first time, subject a palynological study. This work aims to describe lithological and paleontological composition Aït Yalla Tinerhir Formations, then refine age, reconstruct paleoenvironment assess thermal maturity organic matter. studied section is subdivided, ...

The aim of this study was to establish the stratigraphic extent a putative Tournaisian Stage within Carboniferous succession in Lublin Basin. oldest part succession, known as Huczwa Formation and comprising depositional sequences 1–4, investigated based on lithofacies analysis, sequence stratigraphy petrographic studies. article provides descriptions sequences, parasequences (cyclothems) that w...

The Achemmach region is located 40 km to the SW from Meknes city and 6 NE frm Hammam mine. It part of Paleozoic massif Central Morocco. studied area formed by two rock-types: (i) a meta-sedimentary sequence composed Middle Visean limestone shale-sandstone withflyschoid Upper Visean-Namurian age, (ii) magmatic rock series represented volcanic rocks (pillow-lavas), hypovolcanic (dolerites) olivin...