NDLI: Geochemical and Lu/Hf isotopic (LA–ICP–MS) systematics of detrital zircons from the Upper Ordovician sandstones of the Bashkir Uplift (Southern Urals)

Content Provider	Springer Nature Link
Author	Romanyuk, T. V. Kuznetsov, N. B. Belousova, E. A. Degtyarev, K. E. Maslov, A. V. Gorozhanin, V. M. Gorozhanina, E. N. Pyzhova, E. S.
Copyright Year	2017
Abstract	Analyses of trace elements and Lu/Hf isotopes have been carried out in already U–Pb dated detrital zircons from the Upper Ordovician sandstones of the southern part of the Bashkir Uplift. The concentrations of trace elements in the zircons suggest that they were derived from rocks of intermediate (62%), basic (24%), and felsic (9%) compositions as well as alkaline rocks (2%). The Lu/Hf systematics of the zircons demonstrated a wide variation of both ε$_{Hf}$ (from +9.5 to–8.7) and model ages of the parental rocks (1.60 Ga < T DM C < 3.28 Ga). Comparison of the isotopic–geochemical characteristics of the detrital zircons from different levels of the Riphean–Paleozoic sequence of the Bashkir Uplift against those from the Early Cambrian Brusov Formation of the Mezen Basin and Early Neoproterozoic Dzhezhim sandstones of Timan Ridge suggests that at the end of the Late Precambrian near the Uralian margin of Baltica a large block of Late Mesoproterozoic–Early Neoproterozoic crust existed, comprising a significant proportion of melanocratic rocks.
Starting Page	134
Ending Page	137
Page Count	4
File Format	PDF
ISSN	1028334X
Journal	Doklady Earth Sciences
Volume Number	472
Issue Number	2
e-ISSN	15318354
Language	English
Publisher	Pleiades Publishing
Publisher Date	2017-04-23
Publisher Place	Moscow
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Earth Sciences
Content Type	Text
Resource Type	Article
Subject	Earth and Planetary Sciences

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