RUSSIAN JOURNAL OF EARTH SCIENCES VOL. 10, ES5001, doi:10.2205/2008ES000302, 2008

2008ES000302-fig01.html

Figure 1. Scheme of the geological structure in the north of the Western Magnitogorsk and Sakmara-Voznesenka zones (compiled using records by V. I. Kozlov, I. S. Anisimov, V. V. Babkin, A. V. Zhdanov and others). 1 - terrigenous carbonate sediments (C1); 2 - Zilair Formation (D3 -C1) - flyschoid clayey terrigenous sediments with tuffaceous admixture; 3 - Bugodak Formation (D3fm) - tuffs, tuffites, andesites, basaltic andesites; 4-5 - Mukasovo Formation (D3f) and its analogs: 4 - cherts, siliceous siltstones, 5 - grey- and red-colored sandstones and siltstones; 6 - limestones (D2 \v{z}v); 7 - Ulutau Formation and analogs of the Yarlykapovo Horizon, nonsubdivided (D2 \v{z}v) - basalts, rhyolite tuffs, cherts, jaspers, manganese ores; 8 - Irendyk and Karamalytash formations, pooled and their analogs (D1-2) - intermediate and basic volcanites; 9 - Mansurovo sequence (D1e) - tuffaceous terrigenous sediments bearing mixtite and chert beds; 10 - terrigenous siliceous and basaltic siliceous sequences (S-D1); 11 - limestones (S2 -D1); 12 - Sakmara Formation (S1-2) - carbonaceous siliceous shales and siltstones; 13 - Guberlya Formation (O2-3) - basalts, tuffites, cherts, tuffs of mixed composition; 14-17 - Polyakovka Formation (O1-3) in the nappes' section: 14 - first (lower) nappe - basalts, cherts (O2l-O3k1), 15 - second nappe - basalts and cherts (O2l-O3k1), 16 - third nappe - basalts and cherts (O1a-O3k-a\v{s}), 17 - fourth nappe - basalts, red cherts, specular schists (O1a-O2l2); 18 - meta-arkoses R3?; 19 - Balbukovka complex of alkalic granitoids (PZ3); 20 - gabbro-diorites (D1); 21 - dunite-wehrlite-clinopyroxenite complexes; 22 - peridotites (lherzolites) of the Nurali (on the north) and Tatlambet (on the south) massifs; 23 - serpentinite melange; 24 - fault deformations; 25 - findings of paleontological remains, their numbers and age.

The inset map shows rock complexes in the South Urals (after Savel'ev et al. [1998], simplified) and location of the studied areas (Figures 1, 5, 7, and 8, Baiguskarovo area): 1 - East European platform margin; 2 - Late Devonian-Early Carboniferous graywackes (Zilair series): 3 - ophiolitic massifs and serpentinite melanges; 4 - Ordovician and Devonian complexes of accretionary prisms and island arcs (SV - Sakmara-Voznesenka, M - Magnitogorsk, S - Sakmara, T - Tagil zones); 5 - Late Devonian and Carboniferous suprasubduction and riftogenic volcanogenic and carbonate complexes; 6-7 - East Uralian zone: 6 - pre-Paleozoic and Early Paleozoic metamorphic complexes, 7 - terrigenous covers, riftogenic volcanic complexes; 8 - Late Paleozoic granitoids of the Dzhabyk massif; 9 - Major Uralian Fault.


RJES

Citation: Dubinina, S. V., and A. V. Ryazantsev (2008), Conodont stratigraphy and correlation of the Ordovician volcanogenic and volcanogenic sedimentary sequences in the South Urals, Russ. J. Earth Sci., 10, ES5001, doi:10.2205/2008ES000302.

Copyright 2008 by the Russian Journal of Earth Sciences
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