The Olkhon geodynamic proving ground (Lake Baikal): high resolution satellite data and geological maps of new generation

Abstract

The Olkhon region of the Western Pribaikalie is highly attractive for geologists due to the presence of diverse metamorphic complexes and highly complicated combinations of folded structures in this region. The Olkhon region is located within the area of the Pribaikalsky National Park of Russia. At abundant outcrops in the subject area, various geological aspects resulting from the Early Palaeozoic collision system can be studied in detail. By its parameters, the subject area can be considered a «geodynamic proving ground». In recent years, abundant aerospace materials on the area have been accumulated, and long-term field studies resulted in many discoveries and findings which encourage critical revision of the initial conceptions. The material available allows compilation of a new package of geological maps in hard and electronic versions.

Late Quaternary high-temperature geyserites in the Ol’khon area, Baikal rift zone: Petrography, mineralogy, chemical composition, and genesis

“…2). The zones generally coincide with blastomylonite zones of north northeastern trend, which were produced during the late Early Pale ozoic geological evolution of the area (Dobrzhi netskaya et al, 1992;Fedorovsky et al, 1995Fedorovsky et al, , 2005Fedorovsky et al, , 2010. The origin and further evolution of the Baikal rift zone in the Cenozoic was associated with recurrent reactivation of the Early Paleozoic faults, which were later inherited by younger strike slip and normal faults that controlled local hydrothermal activity (Fedor ovsky et al, 2001;Sklyarova et al, 2002;Skovitina and Fedorovsky, 2007).…”

“…The geology and geomorphology of the Ol'khon area are described in (Rozen and Fedorovsky, 2001;Mats et al, 2001;Fedorovsky, 2004;Fedorovsky et al, 2005;Skovitina and Fedorovsky, 2007;Lopatin and Skovitina, 2008;Gladkochub et al, 2008;Ufimtsev et al, 2010;Fedorovsky and Sklyarov, 2010;Skovitina, 2011a, 2011b;Donskaya et al, 2013;and others).…”

“…The structural pattern of the area, which is cur rently thought to be part of the Early Paleozoic colli sional orogen of the Central Asian Orogenic Belt, is defined by a system of tectonic slabs of various thick ness, which are delineated by fault zones trending north northeastward and expressed by blastomylonite sutures (Dobrzhinetskaya et al, 1992;Fedorovsky et al, 1995Fedorovsky et al, , 2005Fedorovsky et al, , 2010.…”

Mechanisms of Mantle‐crust Interaction at Deep Levels of Collision Orogens (Case of the Olkhon Region, West Pribaikalie)

“…1) является фрагментом Саяно-Байкальского склад-чатого пояса ранних каледонид и издавна привле-кает внимание геологов с точки зрения взаимодей-ствия структур Сибирского палеоконтинента и Па-леоазиатского океана [Fedorovsky et al, 1995;Rosen, Fedorovsky, 2001;Sklyarov et al, 2001;Travin et al, 2009;Volkova et al, 2008Volkova et al, , 2010Gladkochub et al, 2010Gladkochub et al, , 2013Fedorovsky, Sklyarov, 2010;Vladimirov et al, 2011aVladimirov et al, , 2011bVladimirov et al, , 2016aTravin, 2016aTravin, , 2016bDonskaya et al, 2017].…”

Allochthonous Marbles in High-Grade Metamorphic Terranes (A Case Study of Olkhon Terrane, West Baikal Area, Russia)

“…All pre-collisional complexes in the Olkhon terrane have their analogs among the rocks formed during main events in the northern CAOB history [Donskaya et al, 2017]. The terrane history comprised several stages of thrusting, doming, and strike-slip faulting accompanied by high-temperature metamorphism and mafic and granitic magmatism [Fedorovsky, Sklyarov, 2010]. The processes of strike-slip tectonics were the most vigorous and diverse and defined the general structure of the Olkhon region with packages of tectonic units varying in composition, morphology, and structure.…”