Large and super-large orogenic golden deposits: Geodynamics, structure, genetic consequences
Research subject. Large and super-large orogenic gold deposits are widely distributed across all continents. This work was aimed at characterizing 24 giant facilities with reserves and resources of more than 500 tons of metal.Materials and methods. The work was based on the authors’ long-term fieldw...
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A.N. Zavaritsky Institute of Geology and Geochemistry
2020
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ftdoajarticles:oai:doaj.org/article:036db2a743b245579c3eb7120b9a6496 2023-05-15T15:16:12+02:00 Large and super-large orogenic golden deposits: Geodynamics, structure, genetic consequences Yu. S. Savchuk A. V. Volkov 2020-01-01T00:00:00Z https://doi.org/10.24930/1681-9004-2019-19-6-813-833 https://doaj.org/article/036db2a743b245579c3eb7120b9a6496 EN RU eng rus A.N. Zavaritsky Institute of Geology and Geochemistry https://www.lithosphere.ru/jour/article/view/1221 https://doaj.org/toc/1681-9004 https://doaj.org/toc/2500-302X 1681-9004 2500-302X doi:10.24930/1681-9004-2019-19-6-813-833 https://doaj.org/article/036db2a743b245579c3eb7120b9a6496 Литосфера, Vol 19, Iss 6, Pp 813-833 (2020) orogenic deposits gold green-stone belts folded belts geodynamics structure subduction collision transpression Engineering geology. Rock mechanics. Soil mechanics. Underground construction TA703-712 article 2020 ftdoajarticles https://doi.org/10.24930/1681-9004-2019-19-6-813-833 2022-12-31T03:23:59Z Research subject. Large and super-large orogenic gold deposits are widely distributed across all continents. This work was aimed at characterizing 24 giant facilities with reserves and resources of more than 500 tons of metal.Materials and methods. The work was based on the authors’ long-term fieldwork research into large and super-large gold deposits in Central Asia and the North-East of the Russian Arctic. In addition, an extensive bibliographic analysis of publications devoted to the largest gold deposits in the world was carried out.Results. A structural analysis showed that the formation of these deposits underwent two main stages. The early – subduction stage – was characterized by the development of gentle disturbances, such as thrusts, thrust nappies, viscous discontinuities and crushing zones, while the structural paragenesis included isocline lying folds and cleavage of the axial surface. The second stage – collision-transpression – began with the deformation of the previously formed structure into open and compressed folds with steep axial surfaces; as a result of further compression, a series of longitudinal discontinuous disturbances developed. An oblique collision of interacting plates lead to the development of shear transpression structural paragenesis, in which oblique cracks predominate. It is established that, in orogenic gold deposits, different stages were characterized by ore-controlling and ore-bearing structures. The binding of ore-bearing disturbances to different stages enabled isolation of deposits of various types that differ in structural and morphological features. The main characteristics of the identified types of deposits are provided. The formation of these deposits occurred during convergent processes, with the ore-controlling structures being a surface manifestation of the movement of block terrains along the surface of the detachment.Results. It is concluded that the surface of the detachment is not only a tectonic zone, but also a channel that provides a link between various ... Article in Journal/Newspaper Arctic Directory of Open Access Journals: DOAJ Articles Arctic LITHOSPHERE (Russia) 19 6 813 833 |
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topic |
orogenic deposits gold green-stone belts folded belts geodynamics structure subduction collision transpression Engineering geology. Rock mechanics. Soil mechanics. Underground construction TA703-712 |
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orogenic deposits gold green-stone belts folded belts geodynamics structure subduction collision transpression Engineering geology. Rock mechanics. Soil mechanics. Underground construction TA703-712 Yu. S. Savchuk A. V. Volkov Large and super-large orogenic golden deposits: Geodynamics, structure, genetic consequences |
topic_facet |
orogenic deposits gold green-stone belts folded belts geodynamics structure subduction collision transpression Engineering geology. Rock mechanics. Soil mechanics. Underground construction TA703-712 |
description |
Research subject. Large and super-large orogenic gold deposits are widely distributed across all continents. This work was aimed at characterizing 24 giant facilities with reserves and resources of more than 500 tons of metal.Materials and methods. The work was based on the authors’ long-term fieldwork research into large and super-large gold deposits in Central Asia and the North-East of the Russian Arctic. In addition, an extensive bibliographic analysis of publications devoted to the largest gold deposits in the world was carried out.Results. A structural analysis showed that the formation of these deposits underwent two main stages. The early – subduction stage – was characterized by the development of gentle disturbances, such as thrusts, thrust nappies, viscous discontinuities and crushing zones, while the structural paragenesis included isocline lying folds and cleavage of the axial surface. The second stage – collision-transpression – began with the deformation of the previously formed structure into open and compressed folds with steep axial surfaces; as a result of further compression, a series of longitudinal discontinuous disturbances developed. An oblique collision of interacting plates lead to the development of shear transpression structural paragenesis, in which oblique cracks predominate. It is established that, in orogenic gold deposits, different stages were characterized by ore-controlling and ore-bearing structures. The binding of ore-bearing disturbances to different stages enabled isolation of deposits of various types that differ in structural and morphological features. The main characteristics of the identified types of deposits are provided. The formation of these deposits occurred during convergent processes, with the ore-controlling structures being a surface manifestation of the movement of block terrains along the surface of the detachment.Results. It is concluded that the surface of the detachment is not only a tectonic zone, but also a channel that provides a link between various ... |
format |
Article in Journal/Newspaper |
author |
Yu. S. Savchuk A. V. Volkov |
author_facet |
Yu. S. Savchuk A. V. Volkov |
author_sort |
Yu. S. Savchuk |
title |
Large and super-large orogenic golden deposits: Geodynamics, structure, genetic consequences |
title_short |
Large and super-large orogenic golden deposits: Geodynamics, structure, genetic consequences |
title_full |
Large and super-large orogenic golden deposits: Geodynamics, structure, genetic consequences |
title_fullStr |
Large and super-large orogenic golden deposits: Geodynamics, structure, genetic consequences |
title_full_unstemmed |
Large and super-large orogenic golden deposits: Geodynamics, structure, genetic consequences |
title_sort |
large and super-large orogenic golden deposits: geodynamics, structure, genetic consequences |
publisher |
A.N. Zavaritsky Institute of Geology and Geochemistry |
publishDate |
2020 |
url |
https://doi.org/10.24930/1681-9004-2019-19-6-813-833 https://doaj.org/article/036db2a743b245579c3eb7120b9a6496 |
geographic |
Arctic |
geographic_facet |
Arctic |
genre |
Arctic |
genre_facet |
Arctic |
op_source |
Литосфера, Vol 19, Iss 6, Pp 813-833 (2020) |
op_relation |
https://www.lithosphere.ru/jour/article/view/1221 https://doaj.org/toc/1681-9004 https://doaj.org/toc/2500-302X 1681-9004 2500-302X doi:10.24930/1681-9004-2019-19-6-813-833 https://doaj.org/article/036db2a743b245579c3eb7120b9a6496 |
op_doi |
https://doi.org/10.24930/1681-9004-2019-19-6-813-833 |
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