Mesozoic Acid Magmatites of Southeastern Transbaikalia: Petrogeochemistry and Relationship with Metasomatism and Ore Formation

Andreeva, O. V.; Петров, В. А.; Poluektov, V. V.

doi:10.1134/s1075701520010018

Cited by 13 publications

(8 citation statements)

References 39 publications

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“…These are the quartz-hübnerite-sulfide Bom-Gorhon, quartz-cassiterite-wolframite Dedovogorskoye, greisen tin-tungsten Spokoyninskoye, mercury-antimony-wolframite Barun-Shiveya, as well as vein tin-tungsten Bukuka, Belukha, and Antonovogorskoye deposits (Figure 1). The ore objects, with the exception of the Barun-Shiveya deposit, are associated with areas of development of Proterozoic, Paleozoic, and Mesozoic sand-shale deposits, intruded by Mesozoic granitoid intrusions [1,[4][5]. The main ore mineral of the deposits is wolframite.…”

Section: Methodsmentioning

confidence: 99%

“…The lowest uranium and thorium contents are characteristic of waters formed in the areas of the Dedovogorskoye, Barun-Shiveya, and Belukha deposits. The anomalously high accumulation of radioactive elements in the waters of the Spokoyninskoye, Bom-Gorkhon, and Bukuka deposits is likely due to their increased content in the enclosing leucocratic and Li-F granitoids [1].…”

Section: E3s Web Of Conferences 463 01018 (2023) Eeste2023mentioning

confidence: 99%

“…Eastern Transbaikalia is one of the three largest uranium-bearing regions in Russia. In addition to uranium mineralization, rare metal granitoids are widely distributed here, characterized by significant enrichment of uranium, as well as thorium, which is associated in its natural compounds with rare earth elements and zirconium [1][2][3]. The connection with rare metal granitoids of tungsten deposits, which owns one of the leading positions in the metallogeny of Eastern Transbaikalia, is also well known.…”

Section: Introductionmentioning

confidence: 99%

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Radioactive (U, Th) elements in technogenic waters of tungsten deposits in Eastern Transbaikalia (Russia)

Chechel

2023

E3S Web of Conf.

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The peculiarities of distribution and migration of uranium and thorium in technogenic waters of seven tungsten deposits located in Eastern Transbaikalia have been studied. It has been established that elevated concentrations of uranium are found in all types of investigated waters, whereas the accumulation of thorium was recorded only in acidic waters (pH < 4). Maximum concentrations of elements were found in the areas of deposits localized in leucocratic and lithium-fluorine granitoids. In acidic waters, uranium and thorium migrate primarily in the form of sulfate and fluoride complex ions, while in neutral and weakly alkaline conditions, carbonate complexes come to the fore.

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Section: Methodsmentioning

confidence: 99%

Section: E3s Web Of Conferences 463 01018 (2023) Eeste2023mentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Radioactive (U, Th) elements in technogenic waters of tungsten deposits in Eastern Transbaikalia (Russia)

Chechel

2023

E3S Web of Conf.

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“…[Bortnikov and Petrov, 2020]. Most of the ore deposits are associated with the Late Mesozoic tectonomagmatic activation, which was the most productive in the manifestation of tectonotermal events and ore-genetic processes that determine metallogenic territory's image [Andreeva et al, 2020;Petrov et al, 2017a]. However, the territory is not provided with a system of continuous observations after lithosphere deformation, although further prospects of MRB development are linked here with work on deep horizons of longterm exploitable deposits under complicated geological and mining conditions.…”

Section: Improvement Of Methods For Forecasting and Preventing Technogenic Accidentsmentioning

confidence: 99%

Assessment of Seismogeodynamic Activity of Mining Areas on the Basis of 3D Geoinformation Modeling

Петров¹,

Minaev²,

Ustinov³

et al. 2021

Russ. J. Earth. Sci.

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The article deals with the creation of an information and analytical platform for assessing external causes of technogenic (man-made) accidents and for improving methods of their predication and prevention on the territories of long-term geological, mining, and engineering activities on the Southeastern (SE) Transbaikal region example — one of the key areas for mining and extraction of the strategic raw minerals in Russia. 3D modeling of active geological structures and hazardous seismogeodynamic processes on GIS-based technologies is a key instrument for forecasting dangerous natural and technogenic events and risk reduction of their occurrence. A matter of minimizing consequences of natural and technogenic disasters for such facilities of increased technological and environmental hazards as minefields, radiochemical facilities, sites for spent nuclear material disposal, dams, gas and oil pipelines, etc. has become essential. It is necessary to assess modern geodynamic territory’s activity on a unified geoinformation platform applying the newest integrated geological-geophysical researches’ methods for these objects, to select seismically active fault-fracture zones, to determine the rate and direction of surface displacement, to establish patterns of subsoil stressed-strained state natural component influence on behavior of local technogenic processes. Taking into account the specificities of geotectonic structure of mining territories, the structure of monitoring seismogeodynamic processes network on multifunctional geodynamic test sites should be developed. Observations made on test sites form the information basis for forecasting of lithosphere condition, taking decisions on rational subsurface management and providing ecological safety of the territory.

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“…Geological structure and ore-bearing volcano-plutonic complexes of the southern Argun area evolved during the Proterozoic (which ended about 600 million years ago), Caledonian (520-410 million years ago), and Hercynian tectonomagmatic cycles (360-120 million years ago), in the process of tectonomagmatic activation in the late Mesozoic (160-100 million years ago) and at the neotectonic phase of the region's development. Late Mesozoic tectonomagmatic activation is most productive in the form of ore-genetic processes that determined the metallogenic appearance of the territory [30,31].…”

Section: Geological Settingmentioning

confidence: 99%

Geological and Mineralogical Mapping Based on Statistical Methods of Remote Sensing Data Processing of Landsat-8: A Case Study in the Southeastern Transbaikalia, Russia

et al. 2022

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The work considers the suitability of using multispectral satellite remote sensing data Landsat-8 for conducting regional geological and mineralogical mapping of the territory of south-eastern Transbaikalia (Russia) based on statistical methods for processing remote sensing data in conditions of medium–low-mountain relief and continental climate. The territory was chosen as the object of study due to its diverse metallogenic specialization (Au, U, Mo, Pb-Zn, Sn, W, Ta, Nb, Li, fluorite). Diversity in composition and age of ore-bearing massifs of intrusive, volcanogenic, and sedimentary rocks are also of interest. The work describes the initial data and considers the procedure for their pre-processing, including radiometric and atmospheric correction. Statistical processing algorithms to increase spectral information content of satellite data Landsat-8 were used. They include: principal component analysis, minimum noise fraction, and independent component analysis. Eigenvector matrices analyzed on the basis of statistical processing results and two-dimensional correlation graphs were built to compare thematic layers with geological material classes: oxide/hydroxide group minerals containing transition iron ions (Fe3+ and Fe3+/Fe2+); a group of clay minerals containing A1-OH and Fe, Mg-OH; and minerals containing Fe2+ and vegetation cover. Pseudo-colored RGB composites representing the distribution and multiplication of geological material classes are generated and interpreted according to the results of statistical methods. Integration of informative thematic layers using a fuzzy logic model was carried out to construct a prediction scheme for detecting hydrothermal mineralization. The received schema was compared with geological information, and positive conclusions about territory suitability for further remote mapping research of hydrothermally altered zones and hypergenesis products in order to localize areas promising for identifying hydrothermal metasomatic mineralization were made.

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Mesozoic Acid Magmatites of Southeastern Transbaikalia: Petrogeochemistry and Relationship with Metasomatism and Ore Formation

Cited by 13 publications

References 39 publications

Radioactive (U, Th) elements in technogenic waters of tungsten deposits in Eastern Transbaikalia (Russia)

Radioactive (U, Th) elements in technogenic waters of tungsten deposits in Eastern Transbaikalia (Russia)

Assessment of Seismogeodynamic Activity of Mining Areas on the Basis of 3D Geoinformation Modeling

Geological and Mineralogical Mapping Based on Statistical Methods of Remote Sensing Data Processing of Landsat-8: A Case Study in the Southeastern Transbaikalia, Russia

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