5 documents found, page 1 of 1
Strontium and neodymium isotopic evidence in the identification of a Carbonifer...
Naderi, A.; Santos, José Francisco; Ribeiro, Sara Monteiro; Moghadam, H.S.; Rocha, Fernando JoaquimThe Tuyeh-Darvar intrusion (Eastern Alborz zone, northern Iran) has a Carboniferous age and comprises metaluminous, ferroan and alkalic monzonites and monzodiorites. Strontium and neodymium isotopic data - obtained at the UA in the scope of a post-graduate internship - had a major role in the characterization of this intrusion. The whole set of petrographic, geochemical and isotopic evidence shows that the Tuye...
Atmospheric dust deposition and levels of trace elements in an industrial city ...
Oliveira, Ana Rita; Rangel, M.; Noack, Y.; Gomes, E.; Costa, J. J.; Cabral Pinto, Marina; Rocha, Fernando Joaquim; Santos, José Francisco; Antunes, M.This study was performed to examine the influence of an industrial complex, and the high traffic volume associated with it, on the atmospheric dust deposition in a Mediterranean setting. The most frequently used device for collecting total atmospheric wet and dry deposition consists of a funnel connected to a receiving bottle. Two deposition collectors were placed in exterior areas of two schools (Escola Básica...
Petrogenesis and tectonic setting of the Tuyeh-Darvar Granitoid (Northern Iran)...
Naderi, A.; Ghasemi, H.; Santos, José Francisco; Rocha, Fernando Joaquim; Griffin, W. L.; Moghadam, H. S.; Papadopoulou, L.Tuyeh-Darvar granitoid, which outcrop ca 45 km Sw of Damghan city, in the Eastern Alborz zone, comprise mainly the pluton emplaced into the Barut Formation of Lower Cambrian ages. Zircon U-Pb ages show Carboniferous ages (325 ± 3 Ma) for the formation of this granitoid. The granitoid is mostly metaluminous, ferroan and alkalic monzonite to monzodiorite. "These rocks have high values of FeOT/MgO and Ga/Al, high ...
پتروژنز توده گرانیتوئیدی تویه دروار، جنوب باختر دامغان، البرز شرقی
Naderi, A.; Ghasemi, H.; Santos, José Francisco; Rocha, Fernando JoaquimThe Touyeh- Darvar Granitoid pluton is situated in the Eastern Alborz zone in SW of Damghan. Based on the field, petrography and geochemical studies, this pluton with monzonite and monzodiorite composition and alkaline and metaluminous to slightly peraluminous nature intruded into the lower Cambrian formations of Barut, Zaigun and Lalun in shallow depths. Petrological, geochemical and tectonic setting investiga...
Influence of dominant wind patterns in a distal region of the NW Iberian Margin...
Martins, Virgínia; Rey, Daniel; Pereira, Egberto; Plaza-Morlote, Maider; Salgueiro, Emília; Moreno, João; Duleba, Wânia; Ribeiro, Sara MonteiroThis work combines planktonic foraminiferal assemblages, stable isotope, transfer function estimated sea surface paleotemperatures (SST) and export productivity (Pexp) with sedimentological records from the PC7 core to document paleoclimatic and paleoceanographic changes on a distal region of the NW Iberian Margin since the last glaciation (<≈68 ka). Neodymium and strontium isotope data are also used to identif...