Trace-Element and Pb Isotope Evidence on Extracting Sulfides from Potassic Melts beneath Longmenshan and Molabushan Volcanoes, Wudalianchi, Northeast China

Рассказов, С. В.; Sun, Yimin; Chuvashova, Irina; Yasnygina, T. A.; Chen, Yang; Xie, Zhenghui; Saranina, Elena; Gerasimov, N. S.; Vladimirova, T. A.

doi:10.3390/min10040319

Cited by 4 publications

(7 citation statements)

References 56 publications

(94 reference statements)

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“…The aim of this paper is to present Pb isotope ages of sources for recent volcanic rocks of unstable Asia in comparison with ages of sources for the older traps and kimberlites in stable regions of the Indian and Siberian paleocontinents in the global geodynamic context. The methods used for analytical determinations of Pb isotope ratios are presented by Harris [38] and Rasskazov et al [4,39,40].…”

Section: Backgroundsmentioning

confidence: 99%

“…Isotope-geochemical studies of volcanic rocks show different mantle components with particular interpretations in each region of Asia [4,14,[40][41][42][43][44][45][46][47][48][49][50][51][52][53][54][55][56].…”

Section: Previous Interpretations Of Isotopic Datamentioning

confidence: 99%

“…More detail trace element and Pb isotope study of volcanic rocks from the Wudalianchi volcanic field revealed, lateral heterogeneity of mantle sources beneath different volcanoes. The obtained Pb-Pb isotope ages varied from 1.88 Ga (Laoshantou and Old Gelaqiushan flows) to the Quaternary (Molabushan cone) [14,40].…”

Section: Previous Interpretations Of Isotopic Datamentioning

confidence: 99%

“…The former is designated by the Baikal, Circum-Ordos, and East China rift systems and Central Asian and Olekma-Stanovoy orogenic systems, the letter by the Indo-Asian zone of collision and its Indochina flank (Figure 1). Pb isotope ages varied from 1.88 Ga (Laoshantou and Old Gelaqiushan flows) to the Quaternary (Molabushan cone) [14,40]. In Central Mongolia, upper Cretaceous-Paleogene volcanic rocks from Gobi and Neogene-Quaternary volcanic rocks from Hangay yielded contrast Pb isotope ages of sources.…”

Section: Strategy For Analysis Of Pb Isotope Datamentioning

confidence: 99%

“…Thus, the young Wohu and Molabu sources are located at the end of the general temporal trend that stretches from the common ELMUVIPMAR component to LOMU values (Figure 16). It is noteworthy that potassic Wudalianchi volcanic rocks show no trace-element signatures of oceanic basalts, but present specific features of the primordial mantle [40]. From experimental data [152], U shows greater incompatibility than Pb that suggests the generation of low U/Pb ratios in the depleted mantle.…”

Section: Permanent Versus Changing Common Componentsmentioning

confidence: 99%

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Mantle Evolution of Asia Inferred from Pb Isotopic Signatures of Sources for Late Phanerozoic Volcanic Rocks

et al. 2020

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We present a systematic study of Pb isotope ages obtained from sources of the late Phanerozoic volcanic rocks from unstable Asia and also volcanic rocks and kimberlites from stable regions of the Siberian and Indian paleocontinents. In the mantle sources, we have recorded events of the Early, Middle, and Late epochs of the Earth’s evolution. Evidence on the Early epoch are preserved in sources of the protolithosphere and viscous lower protomantle likely generated from the Hadean magma ocean about 4.51 and 4.44 Ga and in sources of the viscous upper mantle that acquired low µ and elevated µ (LOMU and ELMU) signatures in the early Archean (4.0–3.7 Ga). The Middle and Late epochs are denoted by sources of the viscous upper mantle that was generated, respectively, in the late Archean-Paleoproterozoic (2.9–2.6 Ga and 2.0–1.8 Ga) and in the Neoproterozoic-late Phanerozoic (0.7–0.6 Ga and < 0.25 Ga). Our results show the specific role of the mantle beneath unstable Asia in terms of globally varied µ signatures and the same mantle epochs in sources of the late Phanerozoic volcanic rocks and kimberlites from stable regions of the Siberian and Indian paleocontinents, but with high μ (HIMU) signatures that are distributed worldwide and explained by sulfide sequestration of Pb from the mantle to the core. We refer the LOMU-ELMU mantle sources to the Asian high-velocity lower mantle domain and propose that the HIMU generating processes were focused mainly in the South Pacific and African low-velocity lower mantle domains in the Middle Mantle Epoch of the Earth’s evolution due to influence of the unbalanced solid core.

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Section: Backgroundsmentioning

confidence: 99%

Section: Previous Interpretations Of Isotopic Datamentioning

confidence: 99%

Section: Previous Interpretations Of Isotopic Datamentioning

confidence: 99%

Section: Strategy For Analysis Of Pb Isotope Datamentioning

confidence: 99%

Section: Permanent Versus Changing Common Componentsmentioning

confidence: 99%

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Mantle Evolution of Asia Inferred from Pb Isotopic Signatures of Sources for Late Phanerozoic Volcanic Rocks

et al. 2020

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Higher diversity of sulfur-oxidizing bacteria based on soxB gene sequencing in surface water than in spring in Wudalianchi volcanic group, NE China

Geng,

Yang,

Liu

et al. 2024

Int Microbiol

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Study on the risk of soil heavy metal pollution in typical developed cities in eastern China

Dong

Feng

Zhang

et al. 2022

Sci Rep

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Enrichment of heavy metals in urban soils has become a major regional environmental risk. At present, research on the soil heavy metals in cities lacks risk spatial correlation analyses between different heavy metals, and there is a relative lack of assessments of the ecological and health risks. We selected Wuxi, a typical developed city of eastern China, collected and tested the contents of heavy metals in the urban soils of Wuxi in May 2020. Combined with Pb isotope analysis, ecological and health risk assessment, we found that the high heavy metal concentrations in Wuxi are mainly located in the central and western regions, and that the changes in spatial fluctuation are relatively small. The Pb isotopes in the urban soils of Wuxi are distributed in areas, such as those are related to coal combustion, automobile exhaust and urban garbage, indicating that the heavy metals in the urban soils of Wuxi are affected by human activities such as coal combustion and automobile exhaust. The average value of the potential ecological risk index of soil heavy metal Cd is 80.3 (the threshold: 40), which represents a high-risk state. Whether adults or children, the risk of soil heavy metals via ingestion is much higher than that through skin exposure. High health risk values are present in the central area of Wuxi and decrease in a ring-shaped pattern, which is similar to the population distribution of Wuxi and greatly increases the potential risk from soil heavy metals, which should be given close attention. We should develop and use clean energy to replace petroleum fossil fuels, especially in densely populated areas. This study provides technical support for the prevention and control of urban heavy metal pollution.

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Trace-Element and Pb Isotope Evidence on Extracting Sulfides from Potassic Melts beneath Longmenshan and Molabushan Volcanoes, Wudalianchi, Northeast China

Cited by 4 publications

References 56 publications

Mantle Evolution of Asia Inferred from Pb Isotopic Signatures of Sources for Late Phanerozoic Volcanic Rocks

Mantle Evolution of Asia Inferred from Pb Isotopic Signatures of Sources for Late Phanerozoic Volcanic Rocks

Higher diversity of sulfur-oxidizing bacteria based on soxB gene sequencing in surface water than in spring in Wudalianchi volcanic group, NE China

Study on the risk of soil heavy metal pollution in typical developed cities in eastern China

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