Structure, magmatism, and Paleozoic tectonic evolution of the Uakit Zone in the context of the formation of the Angara-Vitim batholith in the western Transbaikal region

Ненахов, Виктор Миронович; Nikitin, A. V.

doi:10.1134/s0016852107020033

Cited by 7 publications

(3 citation statements)

References 2 publications

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“…Voluminous Devonian magmatism occured westward from the studied region in the Altay-Sayan area (Vladimirov et al, 2001;Kruk et al, 2004Kruk et al, , 2008Safonova et al, 2004) and northward into the Viluy rift zone and more broadly in the eastern Siberian craton (Kiselev et al, 2007(Kiselev et al, , 2010(Kiselev et al, , 2011Courtillot et al, 2010). Filimonov et al (1999), Ruzhentsev et al (2005) and Nenakhov and Nikitin (2007) have described the fragments of sedimentary strata with Middle Devonian to Early Carboniferous fauna within the Tocher trough of Transbaikalia (Fig. 1).…”

Section: Pre-late Paleozoic History Of the Siberian Continentmentioning

confidence: 94%

Late Paleozoic – Mesozoic subduction-related magmatism at the southern margin of the Siberian continent and the 150 million-year history of the Mongol-Okhotsk Ocean

Donskaya

Гладкочуб

Мазукабзов

et al. 2013

Journal of Asian Earth Sciences

313

153

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Section: Pre-late Paleozoic History Of the Siberian Continentmentioning

confidence: 94%

Late Paleozoic – Mesozoic subduction-related magmatism at the southern margin of the Siberian continent and the 150 million-year history of the Mongol-Okhotsk Ocean

Donskaya

Гладкочуб

Мазукабзов

et al. 2013

Journal of Asian Earth Sciences

313

153

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“…The Late Devonian (Frasnian) age of the limestone-dolomite member is corroborated by remains of red (Rhodóphyta), siphon algae, corals Early Hercynian rocks of the Uda-Vitim and the Vitimkan-Tsipa zones (Fig. 2) [12,31,38]. It is assumed that the Late Paleozoic volcanic rocks and granites of the Zazino Complex make up a joint association within the transregional Selenga-Vitim volcanicplutonic belt [12,38,45,47].…”

Section: Rock Complexes Of the Early Hercynian Structural Stage In Bamentioning

confidence: 95%

Early Hercynides of the Baikal–Vitim Fold System, western Transbaikal region

et al. 2016

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New data on the composition, age, structure, and geodynamic settings of the Upper Silurian-lower Middle Carboniferous rocks in the Baikal-Vitim Fold System (BVFS) are reported. These rocks make up the Early Hercynian structural stage of the BVFS, within which the Uda-Vitim, Vitimkan-Tsipa, and Turka-Kurba lithotectonic zones are recognized. The Early Hercynian stage combines rocks of two stratigraphic levels: Upper Silurian-Upper Devonian (S 2 -D 3 ) and Upper-Devonian-Middle Carboniferous (D 3 -). On the basis of lithostratigraphic and spatiotemporal relationships between sedimentary and volcanic-sedimentary complexes of the Early Hercynian stage three formations are identified, which characterize the main tectonic regimes of the early half of the Late Paleozoic. It has been established that a common paleobasin that evolved through consecutively changing geodynamic settings at the passive and active continental margins existed in the Silurian (?)-early Middle Carboniferous in the northeastern part (in present-day coordinates) of the western Transbaikal region.

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“…No carbonate rocks are found within the catchment (Ryabenko et al, 1964), which sits in taiga forest, dominated by Larix gmelinii (Larch) and Pinus sylvestris (Scots Pine). Mountain shrubs, grass and moss tundra occupy higher altitudes (Anekhonov, 1995;Müller et al, 2014).…”

Section: Study Sitementioning

confidence: 99%

Hydrological (in)stability in Southern Siberia during the Younger Dryas and early Holocene

Harding

Безрукова

Kostrova

et al. 2020

Global and Planetary Change

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Southern Siberia is currently undergoing rapid warming, inducing changes in vegetation, loss of permafrost, and impacts on the hydrodynamics of lakes and rivers. Lake sediments are key archives of environmental change and contain a record of ecosystem variability, as well as providing proxy indicators of wider environmental and climatic change. Investigating how hydrological systems have responded to past shifts in climate can provide essential context for better understanding future ecosystem changes in Siberia. Oxygen isotope ratios within lacustrine records provide fundamental information on past variability in hydrological systems. Here we present a new oxygen isotope record from diatom silica (ẟ 18 O diatom) at Lake Baunt (55 • 11 ′ 15 ′′ N, 113 • 01,45 ′′ E), in the southern part of eastern Siberia, and consider how the site has responded to climate changes between the Younger Dryas and Early to Mid Holocene (ca. 12.4 to 6.2 ka cal BP). Excursions in ẟ 18 O diatom are influenced by air temperature and the seasonality, quantity, and source of atmospheric precipitation. These variables are a function of the strength of the Siberian High, which controls temperature, the proportion and quantity of winter versus summer precipitation, and the relative dominance of Atlantic versus Pacific air masses. A regional comparison with other Siberian ẟ 18 O diatom records, from lakes Baikal and Kotokel, suggests that ẟ 18 O diatom variations in southern Siberia reflect increased continentality during the Younger Dryas, delayed Early Holocene warming in the region, and substantial climate instability between ~10.5 to ~8.2 ka cal BP. Unstable conditions during the Early Holocene thermal optimum most likely reflect localised changes from glacial melting. Taking the profiles from three very different lakes together, highlight the influence of site specific factors on the individual records, and how one site is not indicative of the region as a whole. Overall, the study documents how sensitive this important region is to both internal and external forcing.

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Structure, magmatism, and Paleozoic tectonic evolution of the Uakit Zone in the context of the formation of the Angara-Vitim batholith in the western Transbaikal region

Cited by 7 publications

References 2 publications

Late Paleozoic – Mesozoic subduction-related magmatism at the southern margin of the Siberian continent and the 150 million-year history of the Mongol-Okhotsk Ocean

Late Paleozoic – Mesozoic subduction-related magmatism at the southern margin of the Siberian continent and the 150 million-year history of the Mongol-Okhotsk Ocean

Early Hercynides of the Baikal–Vitim Fold System, western Transbaikal region

Hydrological (in)stability in Southern Siberia during the Younger Dryas and early Holocene

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