U-pb Age Of Plagiogranites From The Ophiolite Association In The Voykar-synya Massif, Polar Urals

摘要

The relationship between the proto- and paleo-Ural complexes is a controversial problem of the Ural tectonics. There are two equally justified concepts . According to the first concept, the paleoceanic complexes of the Urals are related to the Early Ordovician destruction of the older continental basin. According to the second concept, these complexes are relicts of the Late Precambrian-Paleozoic oceanic crust.