First Results of U–Pb LA–ICP–MS Isotope Dating of Detrital Zircons from Arkose Sandstone of the Biryan Subformation of Zilmerdak Formation (Upper Riphean, South Urals)

Маслов, А. В.; Erokhin, Yu. V.; Gerdes, Axel; Ronkin, Yu. L.; Ivanov, K. S.

doi:10.1134/s1028334x18100136

Cited by 21 publications

(6 citation statements)

References 11 publications

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“…The evolution of the intracratonic sedimentary basin (superrift depression) after this boundary gave way to the formation of a large pericratonic basin, which occupied a wide area in the north and east (in modern coordinates) of Baltica (Maslov, 1997). There was a long hiatus in sedimentation more than 250 Ma ago in the sedimentary sequence between the Middle Riphean Avzyan Formation and the Late Riphean Zil'merdak Formation (Maslov et al, 2018;Kuznetsov et al, 2017).…”

Section: Discussionmentioning

confidence: 99%

The Source of Ore Fluids and Sm–Nd Age of Siderite from the Largest Bakal Deposit, Southern Urals

et al. 2021

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Abstract— Based on Sm–Nd data, a crustal source of iron-ore fluid was substantiated and the probability of age estimation for hydrothermal–metasomatic siderite of the Bakal Group, Southern Urals, was shown for the first time. The εNd (Т) values of siderite (from –13.4 to –17.6) plot in the field of Riphean shale and not the Precambrian rift gabbro and granite of this region. The obtained Sm–Nd age of the Bakal siderite is 970 ± 40 Ma, which is consistent with the Pb–Pb age of siderite from the major ore phase (~1000 Ma). The established age boundary coincides with tectonic restructuring, including the formation of a number of barite–polymetallic deposits, as well as ferruginous magnesite and fluorite in the Riphean deposits on the western slope of the Southern Urals.

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Section: Discussionmentioning

confidence: 99%

The Source of Ore Fluids and Sm–Nd Age of Siderite from the Largest Bakal Deposit, Southern Urals

et al. 2021

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“…Despite the relatively low concentrations of Cu (<1.0 wt %), the redbed copper ore occurrences of the Bashkirian uplift are promising in terms of identifying industrial copper deposits on the western slope of the Southern Urals, where large-scale mineralization is predicted [6,7]. The copper-sulfide mineralization here is confined to the Zilmerdak and Katav formations (Figure 2) with an age of approximately ~1000-800 Ma according to [27][28][29]. The deposits of the formations have a characteristic red color due to the presence of diagenetic hematite and magnetite [30,31].…”

Section: Introductionmentioning

confidence: 99%

“…Zilmerdak and Katav formations (Figure 2) with an age of approximately ~1000-800 Ma according to [27][28][29]. The deposits of the formations have a characteristic red color due to the presence of diagenetic hematite and magnetite [30,31].…”

Section: Introductionmentioning

confidence: 99%

“…Generalized stratigraphic column of Neoproterozoic strata of the Southern Urals according to [22,32] with current geochronological constraints and locations of redbed copper occurrences. Geochronological data are provided according to [27,28,33,34].…”

Section: Introductionmentioning

confidence: 99%

“…[22,32] with current geochronological constraints and locations of redbed copper occurrences. Geochronological data are provided according to [27,28,33,34].…”

Section: Introductionmentioning

confidence: 99%

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Cu and Au Mineralization of the Tolparovo Ore Occurrence: Evidence for the Formation of Redbed Copper Occurrences in Neoproterozoic Deposits of the Southern Urals

Michurin,

Kazbulatova

2024

Minerals

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The mineralization and geochemical features of the Tolparovo ore occurrence are studied to reveal the contribution of diagenetic and epigenetic processes in the formation of copper mineralization in redbed deposits. The methods of electron microscopy, ICP MS, X-ray fluorescence, X-ray phase, atomic absorption, thermogravimetric analyses, and C and O isotopic composition were used. The ore is confined to the fault zone and feathering dolomite–calcite veins, having formed at temperatures of ~330–200 °C and pressures of 0.8–0.2 kbar. Similar to other copper redbed occurrences of the Bashkirian uplift, the Tolparovo copper ore occurrence is confined to basal Neoproterozoic deposits. Siliciclastic and carbonate deposits of this level were accumulated at low paleoequator latitudes in arid climates of continental and coastal–marine environments close to evaporite ones. Rocks of this stratigraphic interval demonstrate increased background concentrations of copper (~2–5 times exceeding the clark), which explains the stratification of redbed copper ore occurrences, indicating a predominantly sedimentary copper source. However, most of the redbed copper ore occurrences of the Bashkirian uplift are located in tectonic zones and are associated with the dikes of the Inzer gabbrodolerite complex. This connects the generation of ore occurrences with the formation of the Southern Urals Arsha Large Igneous Province (707–732 Ma) and the activity of postmagmatic fluids. Magmatic processes were presumably activated due to the collapse of the Rodinia supercontinent. It is shown that copper mineralization in stratiform deposits may result from a joint manifestation of dia- and epigenesis processes.

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Magnetic field hyperactivity during the early Neoproterozoic: A paleomagnetic and cyclostratigraphic study of the Katav Formation, southern Urals, Russia

Голованова¹,

Данукалов²,

Sal’manova³

et al. 2023

Geoscience Frontiers

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First Results of U–Pb LA–ICP–MS Isotope Dating of Detrital Zircons from Arkose Sandstone of the Biryan Subformation of Zilmerdak Formation (Upper Riphean, South Urals)

Cited by 21 publications

References 11 publications

The Source of Ore Fluids and Sm–Nd Age of Siderite from the Largest Bakal Deposit, Southern Urals

The Source of Ore Fluids and Sm–Nd Age of Siderite from the Largest Bakal Deposit, Southern Urals

Cu and Au Mineralization of the Tolparovo Ore Occurrence: Evidence for the Formation of Redbed Copper Occurrences in Neoproterozoic Deposits of the Southern Urals

Magnetic field hyperactivity during the early Neoproterozoic: A paleomagnetic and cyclostratigraphic study of the Katav Formation, southern Urals, Russia

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