The Lalezar granitoids crop out within volcanic successions of the Urumieh-Dokhtar Magmatic Assemblage (UDMA). These granitoids have a range from gabbro-diorites to granites in composition. The mineral compositions of the most felsic rocks are characterized by the abundances of Na-plagioclase, quartz, alkali feldspar, biotite and hornblende. In the gabbro-diorite rocks, plagioclase (Ca-rich), h...

Geologists are acquainted with the principle of uniformitarianism, which holds that present day processes are the key to those that operated in the past. But the extent this applies to the processes driving the growth and differentiation of the continental crust throughout the Earth history remains a major controversy in earth sciences. An important part of the discussion circles around the pre...

Exotic crystalline blocks within the Outer Carpathian flysch have potential to establish nature of their eroded basement source(s) and thus reconstruct paleogeography Carpathians. Petrological investigations (including mineral analyses) coupled with zircon apatite U-Pb dating were performed on an exotic block Eocene siliciclastic rocks in Rača Zone Magura Nappe Western Carpathians, Poland. This...

Research subject. Fe- and Al-rich metapelites of the Teya, Garevka Angara complexes North Yenisei Ridge (western margin Siberian craton) were studied. methods. Recently-obtained geochronologic (SHRIMP II U-Pb zircon dating) geochemical data on distribution major trace elements used to reproduce composition age protolith, along with paleofacies formation conditions. Results. The ferruginous-alum...