Global trends in the evolution of metallogenic processes as a reflection of supercontinent cyclicity

Tkachev, A. V.; Rundqvist, D. V.

doi:10.1134/s1075701516040061

Cited by 15 publications

(4 citation statements)

References 82 publications

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“…Similar mineralization is related to the Lukturs Mylovsky massifs [9] (Figure 2). The Kodar-Udokan district comprises deposits of black, non-ferrous, noble, and radioactive metals (Figure 2) [2,5,16] formed in the Paleoproterozoic, the most productive era of the concentration of many metals (Cu-Ni magmatic deposits and sedimentaryepigenetic) [31].…”

Section: Brief Geology Of the Territoriesmentioning

confidence: 99%

Mineral and S-Isotope Compositions of Cu-Sulfide Deposits in Southern Siberia (Kodar–Udokan Region), Russia

Gongalsky,

Velivetskaya,

Taskaev

2024

Minerals

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The Kodaro–Udokan region is a huge Cu metallogenic province in Southern Siberia, one of the largest on Earth. It contains world-class copper sandstone-hosted Udokan (Cu reserves of 26.7 Mt) and PGE-Ni-Cu Chineysky deposits related to gabbro–anorthosite pluton (Cu—10 Mt; Fe-Ti-V, 30 Gt of ore). Furthermore, there are many small deposits of sulfide ores in sedimentary and igneous rocks in this region as well. For many decades, their genesis has been hotly debated. We studied the mineral composition and the sulfur isotopes in several deposits located at different levels of the stratigraphic sequence and in gabbro intruded in sandstones of the Udokan complex. The differences in ore compositions were found. The Burpala and Skvoznoy deposits consisting of the chalcocite–bornite association are characterized only by negative δ34S. The δ34S values for the Udokan deposits are mostly <0 (up to −28‰). The positive δ34S data characterize the ores of the Chineysky and Luktursky intrusions. Two Cu sandstone-hosted deposits are characterized by complex ore composition, i.e., the Krasny deposit, comprising chalcopyrite–pyrrhotite ores, is enriched in Co, Ni, Bi, Sb, Mo, Pb, Zn, Se, Te, and U and has a wide range of δ34S = −8.1–+13.5‰, and the Pravoingamakitsky deposit (Basaltovy section), consisting of quartz–chalcopyrite veins, has high PGE contents in ores with δ34S = +2.9–+4.0‰. These deposits are located near the gabbro massifs, and it is supposed that their ore compositions were influenced by magmatic fluids. The general regularities of the localization of the deposits in rift zones, and the proximity of mineral and isotopic composition allow us to conclude that the main source of copper could be rocks of basic composition because only they contain high Cu contents. Fluids from deep zones could penetrate to the surface and form Cu sandstone-hosted deposits.

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Section: Brief Geology Of the Territoriesmentioning

confidence: 99%

Mineral and S-Isotope Compositions of Cu-Sulfide Deposits in Southern Siberia (Kodar–Udokan Region), Russia

Gongalsky,

Velivetskaya,

Taskaev

2024

Minerals

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“…The episodic cycle has been linked to global orogenesis, 31–33 granitoid magmatism and zircon age peaks, 34–37 crustal growth, 38–41 mineralization, 42–48 large igneous provinces (LIPs) 49–53 and deep mantle convection patterns 54–60 . Additionally, the cycle has been shown to have profound affects on sea level, 61–66 ocean chemistry, 35,67–69 the stable isotope record, 35,70–72 patterns of sedimentation, 73–75 atmospheric composition, 76–78 global biogeochemical cycles, 4,79,80 climate 74,81–84 marine biodiversity, 85,86 and the evolution of life 83,87,88 …”

Section: Introductionmentioning

confidence: 99%

“…The episodic cycle has been linked to global orogenesis, 31 , 32 , 33 granitoid magmatism and zircon age peaks, 34 , 35 , 36 , 37 crustal growth, 38 , 39 , 40 , 41 mineralization, 42 , 43 , 44 , 45 , 46 , 47 , 48 large igneous provinces (LIPs) 49 , 50 , 51 , 52 , 53 and deep mantle convection patterns. 54 , 55 , 56 , 57 , 58 , 59 , 60 Additionally, the cycle has been shown to have profound affects on sea level, 61 , 62 , 63 , 64 , 65 , 66 ocean chemistry, 35 , 67 , 68 , 69 the stable isotope record, 35 , 70 , 71 , 72 patterns of sedimentation, 73 , 74 , 75 atmospheric composition, 76 , 77 , 78 global biogeochemical cycles, 4 , …”

Section: Introductionmentioning

confidence: 99%

The supercontinent cycle and Earth's long‐term climate

Nance

2022

Annals of the New York Academy of Sciences

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Earth's long-term climate has been profoundly influenced by the episodic assembly and breakup of supercontinents at intervals of ca. 500 m.y. This reflects the cycle's impact on global sea level and atmospheric CO 2 (and other greenhouse gases), the levels of which have fluctuated in response to variations in input from volcanism and removal (as carbonate) by the chemical weathering of silicate minerals. Supercontinent amalgamation tends to coincide with climatic cooling due to drawdown of atmospheric CO 2 through enhanced weathering of the orogens of supercontinent assembly and a thermally uplifted supercontinent. Conversely, breakup tends to coincide with increased atmospheric CO 2 and global warming as the dispersing continental fragments cool and subside, and weathering decreases as sea level rises. Supercontinents may also influence global climate through their causal connection to mantle plumes and large igneous provinces (LIPs) linked to their breakup. LIPs may amplify the warming trend of breakup by releasing greenhouse gases or may cause cooling and glaciation through sulfate aerosol release and drawdown of CO 2 through the chemical weathering of LIP basalts. Hence, Earth's long-term climatic trends likely reflect the cycle's influence on sea level, as evidenced by Pangea, whereas its influence on LIP volcanism may have orchestrated between Earth's various climatic states. K E Y W O R D S atmospheric CO 2 , climate, large igneous provinces, sea level, supercontinent cycle This is an open access article under the terms of the Creative Commons Attribution License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited.

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“…Busse et al (1994) succeeded in simulating the coupling relationship between changes in morphology at the edges of tectonic plates and convection in the mantle after collision between the Indian and Eurasian plates. Tkachev and Rundqvist (2016) provided a treatise on the development of metallogenic processes during super-continental cyclicity. Hobbs et al (2000) explored the relationships among mineralizing rates, fluid movements, temperature and chemical reactions involving mineralized hydrothermal fluids and believed that the formation of large orebodies involved a prolonged process requiring fluid, pressure, and heat to function in combination.…”

Section: Introductionmentioning

confidence: 99%

Three-Dimensional Mineral Potential Mapping for Reducing Multiplicity and Uncertainty: Kaerqueka Polymetallic Deposit, QingHai Province, China

2019

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This study focuses on the selection of a method combining simulations of mineralizing processes with three-dimensional (3D) mapping to quantitatively predict locations of concealed mineralization and to reduce uncertainty and multiplicity. The simulation of oreforming processes for concealed mineralization requires the assessment of a regionÕs structural geology, ages of lithological units, degree of metamorphism, and role of magmatism in the genesis of mineralization. The evolution of various factors affecting the development of geological processes in space and time is discussed, including the assessment of models combining regional deformation-magmatic activity-mineralized hydrothermal fluid based on empirical knowledge. Given that metallogeny is a study of the genesis and regional distribution of mineral deposits and emphasizes their spatial and temporal relationships, this paper uses empirical knowledge to predict the locations of concealed mineral deposits. Furthermore, the analysis of 3D geological modeling of concealed orebodies is a process that contributes to understanding the metallogenesis of mineral deposits. In this study of the Kaerqueka skarn and porphyritic deposits, geological, geographic, remote sensing and geochemical data collected from this region are processed using computer modeling techniques available in the Surpac software to establish a digital representation of the mineral field. The ''block mapping modeling'' theory, geostatistical methods, simulations of oreforming processes, and 3D mapping methods are then combined to predict the locations of the most promising areas for concealed mineral deposits around the Kaerqueka deposit. This research introduces a new method for predicting and evaluating the locations of concealed orebodies by reducing multiplicity and uncertainty.

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Global trends in the evolution of metallogenic processes as a reflection of supercontinent cyclicity

Cited by 15 publications

References 82 publications

Mineral and S-Isotope Compositions of Cu-Sulfide Deposits in Southern Siberia (Kodar–Udokan Region), Russia

Mineral and S-Isotope Compositions of Cu-Sulfide Deposits in Southern Siberia (Kodar–Udokan Region), Russia

The supercontinent cycle and Earth's long‐term climate

Three-Dimensional Mineral Potential Mapping for Reducing Multiplicity and Uncertainty: Kaerqueka Polymetallic Deposit, QingHai Province, China

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