Noble gas isotopes suggest deep mantle plume source of late Cenozoic mafic alkaline volcanism in Europe

Buikin, A. I.; Trieloff, M.; Hopp, J.; Althaus, Tilmann; Korochantseva, E. V.; Schwarz, Winfried H.; Altherr, Rainer

doi:10.1016/j.epsl.2004.11.001

Cited by 82 publications

(40 citation statements)

References 54 publications

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“…By contrast, a plume scenario is still permissible in the Eifel region. Based on neon isotopes measured on xenoliths, Buikin et al (2005) suggest that there is a mantle plume contributing to the European intraplate magmatism, an interpretation challenged by other authors who argue that the source was restricted to the upper mantle (Gautheron et al, 2005;Brauer et al, 2013). A deep mantle plume origin was also suggested based on xenon isotopes by Caracausi et al (2016) on the basis of the 129 Xe/ 136 Xe ratio, which appears to be close to that of Icelandic basalts (Mukhopadhyay, 2012).…”

Section: Sample Location Sampling Analytical Procedures and Resultsmentioning

confidence: 92%

“…The Massif Central, like the Eifel, belongs to the Central European Volcanic Province (CEVP), in which the cause of volcanism is a matter of debate. Several scenarios have been proposed to account for the widespread volcanism in the region: an asthenospheric upwelling resulting from the formation of a deep lithospheric root under the Alps (Merle and Michon, 2001), the melting of the Sub-Continental Lithospheric Mantle (SCLM) ( Gautheron et al, 2005) or a deep-seated mantle plume (e.g., Buikin et al, 2005). Our results show that noble gases have signatures consistent with those expected from a mantle source similar to that of MORB, obviating the need for a deep mantle plume.…”

Section: Geochemical Perspectives Lettersmentioning

confidence: 99%

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The xenon isotopic signature of the mantle beneath Massif Central

Moreira¹,

Rouchon²,

Muller³

et al. 2018

Geochem. Persp. Let.

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The origin of the Central European Volcanic Province, which includes the Massif Central and the Eifel regions, is currently debated. Several different causes have been proposed to account for the volcanism observed in the area. Namely, both the presence of one or more mantle plumes under Europe, and the upwelling and melting of upper mantle related to the formation of the Alps, have been suggested as possible drivers of volcanism. In order to distinguish between these possibilities, we have analysed noble gases in the Lignat Spring to constrain the nature of the mantle source below the Massif Central. The gas has a 3 He/ 4 He ratio of 5.51 Ra, whereas its neon isotopic signature is identical to that of MORB source. The gas has an 40 Ar/ 36 Ar ratio of 1113 ± 3, far in excess of the atmospheric ratio. The xenon isotopic pattern is explained by 95 % atmospheric contamination of a MORB-like gas. The noble gases clearly show that the mantle beneath Massif Central has a geochemical signature similar to MORB source mantle, with the exception of helium, which more closely corresponds to SCLM signatures, and thus removes the need for the presence of a mantle plume in the region.

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Section: Sample Location Sampling Analytical Procedures and Resultsmentioning

confidence: 92%

Section: Geochemical Perspectives Lettersmentioning

confidence: 99%

The xenon isotopic signature of the mantle beneath Massif Central

Moreira¹,

Rouchon²,

Muller³

et al. 2018

Geochem. Persp. Let.

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“…Upwelling of a localized mantle plume beneath the Pannonian Basin can readily explain the melt generation and volcanism after the peak extension in the middle Miocene (Seghedi et al, 2004a). Goes et al (1999) and Buikin et al (2005) suggested that the scattered mantle plumes beneath Central and Western Europe could have a common origin in the lower mantle. Remarkably, the alkaline mafi c volcanic fi elds in Europe are at the periphery of the Alpine-Mediterranean region, which is underlain by a posi tive seismic velocity anomaly in the depth range of 400-650 km ( Fig.…”

Section: Role Of a Mantle Plumementioning

confidence: 99%

Genesis of the Neogene to Quaternary volcanism in the Carpathian-Pannonian region: Role of subduction, extension, and mantle plume

Harangi

Lenkey

2007

Cenozoic Volcanism in the Mediterranean Area

124

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Neogene to Quaternary volcanism of the Carpathian-Pannonian region is part of the extensive volcanic activity in the Mediterranean and surrounding regions. Using the spatial and temporal distribution of the magmatic rocks, their major-and traceelement features, and Sr-Nd-Pb isotope characteristics, we suggest that lithospheric extension in the Pannonian Basin had a major role in the generation of the magmas. Dehydration of subducting slab should have resulted in thorough metasomatism in the mantle wedge during Cretaceous to early Miocene that would have lowered the melting temperature, therefore playing an indirect role in the generation of magmas later on. Mixing between mantle-derived magmas and lower-crustal melts was an important process at the fi rst stage of the silicic and calc-alkaline magmatism in the Northern Pannonian Basin. However, the crustal component gradually decreased with time, which is consistent with magmatic activity in a continuously thinning continental plate. Calc-alkaline volcanism along the Eastern Carpathians was mostly postcollisional and could have been related to slab break-off processes. However, the fairly young (<1.5 Ma) potassic magmatism at the southeasternmost segment of the Carpathian volcanic arc could be explained by lithospheric delamination under the Vrancea zone. Alkaline basaltic volcanism began at the end of rifting of the Pannonian Basin (11 Ma) and continued until recently. We suggest that a mantle plume beneath the Pannonian Basin is highly unlikely and the mafi c magmas were formed by small degree partial melting in a heterogeneous asthenospheric mantle, which has been close to the solidus temperature due to the lithospheric extension in the Miocene. Magmatism appears to have been in a waning phase for the last 2 m.y., but recent volcanic eruptions (<200 k.y.) indicate that future volcanic activity cannot be unambiguously ruled out.

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“…Previous studies have demonstrated that the fluid sources on the global system include the mantle of oceanic type (MORB), the mantle of continental type (SCLM), the mantle of mantle plume /aesthenospheretype, the crust and the atmosphere [45][46][47][48][49] . However, the palaeofluids for mineralization usually do not show the features of typical fluid sources mentioned above.…”

Section: Type Of Ore Fluidsmentioning

confidence: 99%

“…the fluids with different proportions of the end-members. Based on the fluid properties from the previous stud-ies [4,36,37,[45][46][47][48][49][50][51] to the isotope compositions of noble gases of the fluid inclusions the fluids in the Xiaoxinancha Au-rich Cu deposit can be divided into three types, i.e. mantle-like fluid, crust-like fluid and saturated atmospheric water-like fluid.…”

Section: Type Of Ore Fluidsmentioning

confidence: 99%

Ore-forming mechanism for the Xiaoxinancha Au-rich Cu deposit in Yanbian, Jilin Province, China: Evidence from noble gas isotope geochemistry of fluid inclusions in minerals

Sun

Zhao

Jun-qiang

et al. 2008

Sci. China Ser. D-Earth Sci.

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The Xiaoxinancha Au-rich copper deposit is one of important Au-Cu deposits along the continental margin in Eastern China. The deposit consists of two sections: the Beishan mine (North), composed of altered rocks with veinlet-dissemination sulfides and melnicovite-dominated sulfide-quartz veins, and the Nanshan mine (South), composed of pyrrhotite-dominated sulfide-quartz veins and pure sulfide veins. The isotope compositions of noble gases extracted from fluid inclusions in ore minerals, i.e. ratios of 3 He/ 4 He, 20 Ne/ 22 Ne and 40 Ar/ 36 Ar are in the ranges of 4.45-0.08 Ra, 10.2-8.8 and 306-430, respectively. Fluid inclusions in minerals from the Nanshan mine have higher 3 He/ 4 He and 20 Ne/ 22 Ne ratios whereas those from the Beishan mine have lower 3 He/ 4 He ratios. The analysis of origin, and evolution of the ore fluids and its relations with the ore-forming stages and the ages of mineralization suggests that the initial hydrothermal fluids probably come from the melts generated by partial melting of oceanic crust with the participation of fluids from the mantle (mantle-plume type)/aesthenosphere. This also corresponds to the continental margin settings during the subduction of Izanagi ocaneic plate towards the palaeo-Asian continent (123-102 Ma). The veinlet-dissemination ore bodies of the Beishan mine were formed through replacement and crystallization of the mixed fluids generated by mixing of the ascending high-temperature boiling fluid with young crustal fluid whereas the melnicovite-dominated sulfide-quartz veins were formed subsequently by filling of the high-temperature ore fluid in fissures. Pyrrhotite-dominated sulfide-quartz veins in the Nanshan mine were formed by filling-deposition-crystallization of the moderate-temperature ore fluids and the pure sulfide veins were formed later by filling-deposition-crystallization of ore substance-rich fluids after boiling of the moderate-temperature ore fluids. The metallogenic dynamic processes can be summarized as: (1) formation of fluid-and ore substance-bearing Adakitic magma by degassing, dewatering and partial melting during subduction of the Izanagi plate; (2) separation and formation of ore fluids from the Adakitic magma; and (3) success-sive ascending of the ore fluids and final formation of the Au-rich Cu deposit of veinlet-dissemination and vein types by secondary boiling.Au-rich Cu deposit, fluid inclusion, He-Ne-Ar isotopes, ore-forming mechanism, Xiaoxinancha, Yanbian Isotope compositions of noble gases have been considered as accurate and sensitive tracers for understanding of the origin and evolution of celestial bodies owing to its chemical stability and unique geochemical properties with respect to isotopic fractionation. However, due to the very low abundances of noble gases in various tested objects and the complexity in geochemical fractionation of isotopes the noble gases were used mainly in tracing the origin of meteorites and in studying the evolution of oceanic lithosphere [1] . During the last decade with the improvements in ex...

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Noble gas isotopes suggest deep mantle plume source of late Cenozoic mafic alkaline volcanism in Europe

Cited by 82 publications

References 54 publications

The xenon isotopic signature of the mantle beneath Massif Central

The xenon isotopic signature of the mantle beneath Massif Central

Genesis of the Neogene to Quaternary volcanism in the Carpathian-Pannonian region: Role of subduction, extension, and mantle plume

Ore-forming mechanism for the Xiaoxinancha Au-rich Cu deposit in Yanbian, Jilin Province, China: Evidence from noble gas isotope geochemistry of fluid inclusions in minerals

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