Tab.1: Representative bulk-rock and trace element chemistry

• Main Author: Remizov, Dmitry N
• Format: Dataset
• Language: English
• Published: PANGAEA 2011
• Subjects: Aluminium oxide; Antimony; Arsenic; Barium; Caesium; Calcium oxide; Cerium; Chromium; Cobalt; Dzela; Elements; total; Europium; Geological sample; GEOS; Hafnium; Iron oxide; Fe2O3; FeO; Lanthanum; Loss on ignition; Lutetium; Magnesium oxide; Manganese oxide; Neodymium; Nickel; ORDINAL NUMBER; Phosphorus oxide; Potassium oxide; Rare-earth elements; Rock type; Rubidium; Samarium; Sample code/label; Scandium; Selenium; Silicon dioxide; Sodium oxide; Strontium; Tantalum; Terbium; Thorium; Titanium dioxide; Uranium; Voikar massif; Polar Urals; Ytterbium; Zinc; Zirconium; Polarforschung; ural mountains
• Online Access: https://doi.pangaea.de/10.1594/PANGAEA.757271; https://doi.org/10.1594/PANGAEA.757271

High-pressure/low-temperature metabasites occupy a definite geological position within the structure of the Polar Urals and have a very important bearing on the understanding of the early history of the Ural Mountains. Recently obtained geological, petrographic, geochemical and isotope data allow some conclusions on this history. The metabasites of the Khord”yus and Dzela complexes contain relics of a Neoproterozoic (578 ±8 Ma) oceanic crust. This crust formed part of the base of the early Paleozoic (500 Ma) ensimatic island arc and experienced Ca-Al-Si±Na metasomatism and, probably, partial melting with the formation of boninite melts. However, so far no boninite volcanics have been found. The metabasites at the base of the island arc took part in the collision and as a consequence experienced glaucophane schist and greenschist facies metamorphism during the collision and obduction over the passive Baltic margin 350 ±11 Ma ago.