Open AccessProvenance study of terrigenous rocks in basal beds of Uralides from Baidarata allochthon (Polar Urals): U-Pb dating of detrital zircons
Author(s) -
S. N. Sychev,
Anna Ivleva,
S. Yu. Petrov,
M. N. Petrova,
V. B. Ershova,
R. V. Veselovskiy,
A. G. Konnov
Publication year - 2017
Publication title -
vestnik moskovskogo universiteta. seriâ 4, geologiâ
Language(s) - English
Resource type - Journals
ISSN - 0579-9406
DOI - 10.33623/0579-9406-2017-2-16-24
Subject(s) - terrigenous sediment , provenance , geology , allochthon , ordovician , arctic , sedimentary rock , paleontology , geochemistry , zircon , clastic rock , baltica , laurentia , oceanography , tectonics , nappe
U-Pb dating (LA-ICP-MS) of detrital zircons from the upper Cambrian - lower Ordovician terrigenous deposits of Baidarata allochthone (northern part of the Polar Urals) is performed. Analysis of the youngest populations of detrital zircons suggests wide development of Uralides instead of Preuralides as it was believed before. The source of sediments for investigated Baidarata allochtone rocks was probably Bedamel’ island arc rather than Timan orogen. According to results of statistical analysis of detrital zircons data from coeval deposits of Arctic region, similarity of sedimentary provenances for Baidarata allochtone, Novaya Zemlya and Severnaya Zemlya archipelagos is observed.