Phosphorus is essential for cell biology, yet scarce in modern marine environments wherein free phosphate consumed by life or titrated calcium to form apatite minerals. The environmental conditions under which the early biosphere emerged and phosphorus was integrated throughout biochemistry unknown. We measured concentrations of 2.8–2.5 Ga shallow carbonate facies across six Neoarchean shelf-ra...

Abstract The exposed Middle Eocene (Bartonian) Qurn Formation along Qattamiya—Ain Sokhna district is measured, sampled and microscopically investigated. Besides, the vertical distribution of chemical oxides strontium (Sr) has been determined to identify their petrographic, geochemical characteristics interpret depositional environments. facies analysis (lithofacies, microfacies, biofacies) stud...

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...

The overall objective of this research project is the development and evaluation of a flexible and cooperative management system within SME based production networks for the ramp-up process. Inter-organizational processes of six previous ramp ups were analyzed and documented in flow charts. Highlevel executives and domain-experts of the production nets developed in moderated focus-groups standa...

carboniferous corals of sardar formation, in zeludu stratigraphic section (in ozbak kuh mountains) was studied. after selected of 50 specimens of coral fossils, from first band of corals, 9 species belong to 5 genera from rugosa and tabulata corals with late serpukhovian age were identified. these corals are included following species: heritschioides pseudosolitarius, heritschioides vepres, her...

Abstract This paper presents the facies and depositional environment of early Miocene Dam Formation, Eastern Arabian platform, Saudi Arabia. Deposition Formation (Fm.) was considered as a restricted shallow marine deposition. Few studies suggest role sea-level change in its deposition but were without decisive substantiation. Here, we describe high-resolution model Fm. under varying conditions....