Abstract —The paper presents data on the composition and age of mafic rocks shoshonitic series in Irkut block Sharyzhalgai uplift (southwest Siberian ?raton). According to U–Pb dating magmatic zircon, formation monzodiorites Poludennyi massif gabbro-dolerites endo- exocontact zones Toisuk pluton occurred at 1.87 1.86–1.85 Ga, respectively. The intrusion magmas their underplating into basement c...

Hardly any previous studies have focused on the granitic dykes which intrude into Paleoproterozoic Liaohe Group in Liaodong Peninsula, northeast of North China Craton. In situ zircon U-Pb dating, Lu-Hf isotopic and geochemical analyses three representative monzogranite were taken this study. These relatively high content SiO2 (72.20%–74.78%) K2O (2.83%–6.37%), characteristics high-K calc-alkali...

TheOrdovician volcanic and intrusive rocks of the Cadia–Neville region, in the southern Molong Volcanic Belt section of the Macquarie Arc in central-western New South Wales, display a temporal progression from shoshonitic basaltic volcanism (e.g. Mt Pleasant Basalt Member) in the late Darriwilian to Gisbornian (ca 460–453 Ma) to small-volume dacitic medium-K calc-alkaline magmatism (e.g. Copper...

The Quaternary Zarloukh Bentonite -Tuff (ZBT) deposit occurs within the Hemrin South Mountain, northern Iraq. ZBT as depression-filling exposed on erosional surface of siliciclastic Pliocene Muqdadiya Formation and covered by an overburden recent sediments. thickness studied industrial bentonite bed is ~80-100 cm, occurring at bottom these depressions, ~3-4 m thick bedded volcanic tuff, which a...

Research subject. The orogenic marginal-continental and collisional volcanic-plutonic belts, the zonality of magmatism metallogeny within them, as well relationship endogenous with magmatic geodynamics belt formation. Materials methods include long-term studies Devonian Upper-Paleozoic belts Kazakhstan Cretaceous-Paleogenic Sikhote-Alin; an analysis alterations in material parameters magmatites...