...Fig. 6. Plant prints in the Prisayan (Irkut basin) and Tugnuyskaya (Tugnuy basin) Formations. Plates 1, 3, 5 are Cladophlebis suluctensis Brick, from the Mel’nichnaya section: print of bipinnate frond, sample St-2009/1-3 (1); print of fern leaf with well marked pinnules, sample St-2009/1-3 (3...

...Fig. 6. a , Schematic structure of the formations of the Jurassic–Cretaceous deposits of the Tugnui–Sukhara rift basin ( Tsekhovskii, 2013 ); b , geoelectric section of volcanic-sedimentary deposits of the Tugnui basin. 1 , effusive rocks; 2 , breccias with boulder lenses and rotten stone; 3...

...D.V. Metelkin; I.V. Gordienko; V.S. Klimuk Abstract The Upper Jurassic basalts (150–160 Ma) described as the Ichetui Formation over the territory of the Tugnui, Margintui, and Maly Khamar-Daban volcanic structures have been studied paleomagnetically. It is shown that natural remanent magnetization...

...) and central (Khilok–Tugnui) segments of the Late Mesozoic rift zone ( Fig. 1 ). In present-day topography it is manifested in the horsts framing the Late Cretaceous Lake Gusinoe basin in the northwest, specifically the complexes of the Khambin, Khorukha, and Khukhe-Khada Ridges. The VTC is 15–20 km wide...

... and composition of resultant products. This evidence allows the rift to be split into some sectors: Dzhida (Malyi Khamar-Daban), Tugnui–Khilok, Ilkino–Kizhinga, Uda and Vitim. The Uda sector belongs to the eastern part of the rift zone; it has been poorly studied so far in terms of mineral and chemical features...

...Figure 1 ( a ) Location of Transbaikalia on the map of Asia; ( b ) simplified geology of Transbaikalia and adjacent areas [after 20]. 1 – Siberian Craton, 2 – Baikal and Khubsugul Lakes, 3 – Jurassic basins (TGB–Tugnuy Basin), 4 – Cretaceous basins, 5 – Cenozoic basins (TNB–Tunka Basin), 6...

....; 16 — Ulyatui pluton, middle reaches of the Dzhida R. 17–19 — Uda-Tugnui interfluve. 21–26 — 21, 22 — Armak pluton, middle reaches of the Dzhida R., 23–25 — Uda-Tugnui interfluve. 27–33: 27–30 — Kharitonovo pluton, lower reaches of the Khilok R.; 31 — Khorinsk pluton, basin of the Ona R.; 32 — Bryansk...

... eruptions in the Tugnui depression [ 21 ]. In the Late Triassic and Early Jurassic, there was a sea basin in Eastern Transbaikalia, where thick (to 5 km) flyschoid and turbidite deposits formed. Around this basin zonally structured magmatic areas formed [ 25 , 27 ]. The zone of tholeiitic magmatism...

... Muya tunnel running roughly across these faults), and high temperature gradients (predicted temperatures in the tunnel body may exceed 60 °C) [ 9 ]. The hottest spring (Tsipikan (Uakit) spring with 84 °C water) was found near the Tsipa-Baunt basin within the Uakit Fault that cuts the South Muya...

... the entire Eurasian territory over the South Hangay hotspot. The South Baikal zone includes the Late Cenozoic volcanic fields south of Lake Baikal, specifically in the Khamar-Daban Ridge, around Lake Hövsgöl, in the Tunka basin, and in eastern Tuva. This zone is almost free of Late Mesozoic and Early...

...Fig. 3. TTT rocks, matrix, and melt inclusion glasses in TAS diagram. 1 – 4 , rocks in Nyalga basin: basaltic trachyandesite ( 1 ), trachytic rocks (trachyte, trachydacite, and alkali rhyodacite) ( 2 ), trachyrhyodacite ( 3 ), trachyrhyolite ( 4 ); 5 , basaltic rocks of Tugnui–Khilok segment...