Recycled crustal carbon in the depleted mantle source of El Hierro volcano, Canary Islands

Sandoval-Velasquez, Andrès; Rizzo, Andrea Luca; Aiuppa, Alessandro; Remigi, Samantha; Padrón, Eleazar; Pérez, Nemesio M.; Frezzotti, Maria Luce

doi:10.1016/j.lithos.2021.106414

Cited by 13 publications

(14 citation statements)

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“…Mantle xenoliths and lavas were crushed for noble gas and CO 2 isotopic determinations following the same methods and analytical procedures described in Rizzo et al (2018), Rizzo et al (2021), Sandoval-Velasquez et al (2021a), and Sandoval-Velasquez et al (2021b. After crushing, samples were sieved with the aim of hand-picking crystals (with diameters >0.25 mm) of Ol, Opx, and Cpx from mantle xenoliths and only Ol crystals from lavas.…”

Section: Samples and Methodsmentioning

confidence: 99%

“…Our hypothesis points to the existence of a refertilized mantle whose Ar-CO 2 systematics have been modified by the introduction of air-derived noble gases and crustal materials inherited from the extinct Farallon subduction. We rely on noble gas and CO 2 isotopes (coupled to petrological evidence), which are unique geodynamic tracers of the degassing history of the mantle, of the origin of Earth's volatiles, of the relationship between different mantle components, and of the nature and signature of metasomatic fluids in the mantle (Deines, 2002;Dunai and Porcelli, 2002;Gurenko et al, 2006;Dasgupta and Hirschmann, 2010;Day and Hilton, 2011;Day and Hilton, 2020;Correale et al, 2012, Correale et al, 2015Rizzo et al, 2018;Li et al, 2019;Sandoval-Velasquez et al, 2021a;Sandoval-Velasquez et al, 2021b;Bekaert et al, 2021).…”

Section: Introductionmentioning

confidence: 99%

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The heterogeneity of the Mexican lithospheric mantle: Clues from noble gas and CO2 isotopes in fluid inclusions

et al. 2022

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The abundance of mantle-derived rocks and lavas, in combination with its tectonic evolution, render Mexico a perfect laboratory to investigate the chemical and the isotopic heterogeneity of the lithospheric mantle. New data on the composition of noble gases and CO2 in Mexican mantle xenoliths and lavas is reported. Our samples consist of six ultramafic nodules from the Durango Volcanic Field (DVF) and the San Quintin Volcanic Field (SQVF), monogenetic complexes belonging to the Mexican Basin and Range province; and four lavas from the Sierra Chichinautzin (SCN), a Quaternary monogenetic volcanic field located in the Mexican volcanic arc. Ne and Ar isotopes in fluid inclusions reveal mixing between atmospheric and MORB-like fluids (e.g., 40Ar/36Ar < 1,200). DVF and SQVF nodules record low 40Ar/36Ar and 4He/20Ne that confirm the existence of recycled atmospheric-derived noble gases in the local mantle. The averages of the Rc/Ra ratios (3He/4He corrected for atmospheric contamination) measured in Mexican localities are within the MORB-like range: DVF= 8.39 ± 0.24 Ra, SQVF = 7.43 ± 0.19 Ra and SCN lavas = 7.15 ± 0.33 Ra (1σ). With the aim of assessing the isotopic variability of the Mexican lithospheric mantle, the above results were compared with similar data previously obtained from ultramafic nodules found in the Ventura Espiritu Santo Volcanic Field (VESVF), another Quaternary monogenetic volcanic complex belonging the Basin and Range. The higher 3He/4He ratios in DVF relative to those reported for the VESVF and the SQVF are explained as reflecting different ages of mantle refertilization, triggered by the retreating of the Farallon slab (∼40 Ma ago) and associated delamination slab processes. We propose that the DVF mantle was refertilized more recently (<10 Ma ago) than the mantle beneath the SQVF and VESVF (∼40–20 Ma ago). On the other hand, He-Ne-Ar compositions of SCN olivines share similarities with VESVF xenoliths, suggesting a relatively homogeneous lithospheric mantle in central Mexico. Finally, DVF and the SCN samples exhibit δ13C values within the MORB range (comparable to other values previously reported in fluid inclusions and fumaroles from Popocatépetl, Colima—Ceboruco volcanoes). While we explain the MORB-like carbon signatures of the DVF samples as the result of the above-mentioned refertilization process, the SCN signatures likely reflect either (i) trapping of isotopically fractionated CO2 derived from magmatic degassing or (ii) a mantle source unaffected by subduction-related crustal carbon recycling.

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Section: Samples and Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

The heterogeneity of the Mexican lithospheric mantle: Clues from noble gas and CO2 isotopes in fluid inclusions

et al. 2022

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“…The 3 He/ 4 He ratio has been monitored at Dos Aguas CO 2 ‐rich cold mineral spring in La Palma Island (henceforth DA, Figures 1d and 1e) since 1991 and represents a long‐term volcano monitoring tool able to provide early warning of future volcanic unrest episodes. DA is located at the bottom of Taburiente caldera (Figure 1d) which, in terms of noble gases, is the only location in the Canarian archipelago where it is possible to identify a primordial component of the Canary mantle source (Day & Hilton, 2020; Hilton et al., 2000; Pérez et al., 1992, 1994; Sandoval‐Velasquez et al., 2021; Torres‐Gonzalez et al., 2020). DA exhibits a 3 He/ 4 He ratio >9 R A , where R A = 1.384 × 10 −6 is the 3 He/ 4 He atmospheric ratio (Clarke et al., 1976).…”

Section: Introductionmentioning

confidence: 99%

Early Precursory Changes in the ³He/⁴He Ratio Prior to the 2021 Tajogaite Eruption at Cumbre Vieja Volcano, La Palma, Canary Islands

Padrón

Pérez

Hernández

et al. 2022

Geophysical Research Letters

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We report significant changes in the 3He/4He ratio measured at the Dos Aguas CO2‐rich cold mineral spring (La Palma, Canary Islands) that represent early precursory signals of the 2021 Tajogaite eruption at Cumbre Vieja volcano. Air‐corrected 3He/4He ratio has an average value of 9.80 RA in the last 30 years (1991–2021). Helium isotope ratios higher than the average value were observed during the period 2008–2013 suggesting an input of 3He‐rich less‐degassed magma beneath La Palma lithosphere. Magma ascended in 2017–2018 toward another reservoir located beneath Cumbre Vieja at 10–15 km depth, causing detectable seismic swarms located between 15 and 25 km, followed in 2020 by additional inputs of 3He‐rich less‐degassed magma that intruded at depth. Finally, in 2021 the buoyancy of magma and the pressure of the exsolved gases overcame the lithospheric resistance and a volcanic eruption took place between 19 September and 13 December 2021.

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“…The hot spot or mantle plume theory extrapolates the model of creation of Hawaiian volcanism to Canary volcanism, that is, a magmatic flow that is injected from the mantle to the crust, forming the islands in the vertical of this focus (Sandoval-Velasquez et al 2021). Among the thermal theories is the theory of the blob or "bubble" model, which is based on a series of magma droplets or bubbles that underlie the archipelago, which are injected into the lithosphere to produce volcanic events.…”

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“…On the other hand, the propagating fracture theory links the formation of the islands to the Moroccan Atlas Mountains through a shear fault. The uplifted block theory argues that compressional tectonics led to crustal thickening, causing the uplift of the blocks that formed the islands (Sandoval-Velasquez et al 2021). Finally, the unified model tried to integrate tectonic and thermal theories to explain the complexity of the formation of the Canary Islands (Sandoval-Velasquez et al 2021).…”

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Volcanology of Recent Oceanic Active Island

Ramos

Ortega

Przeor

et al. 2022

Geoheritage, Geoparks and Geotourism

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The island of El Hierro is the youngest of the entire Canary archipelago, with an age of about 1.56 My. However, it has had a rapid growth, which has caused that from its first stages of formation it has had important collapses. Since submarine volcanism, El Hierro has gone through different phases of formation such as the construction of the Tiñor Building, later that of the El Golfo Building, then came the Rifts volcanism and finally the historical volcanism. This is the geological context of an island whose formation process has not yet finished.

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Recycled crustal carbon in the depleted mantle source of El Hierro volcano, Canary Islands

Cited by 13 publications

References 79 publications

The heterogeneity of the Mexican lithospheric mantle: Clues from noble gas and CO2 isotopes in fluid inclusions

The heterogeneity of the Mexican lithospheric mantle: Clues from noble gas and CO2 isotopes in fluid inclusions

Early Precursory Changes in the ³He/⁴He Ratio Prior to the 2021 Tajogaite Eruption at Cumbre Vieja Volcano, La Palma, Canary Islands

Volcanology of Recent Oceanic Active Island

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Recycled crustal carbon in the depleted mantle source of El Hierro volcano, Canary Islands

Cited by 13 publications

References 79 publications

The heterogeneity of the Mexican lithospheric mantle: Clues from noble gas and CO2 isotopes in fluid inclusions

The heterogeneity of the Mexican lithospheric mantle: Clues from noble gas and CO2 isotopes in fluid inclusions

Early Precursory Changes in the 3He/4He Ratio Prior to the 2021 Tajogaite Eruption at Cumbre Vieja Volcano, La Palma, Canary Islands

Volcanology of Recent Oceanic Active Island

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Early Precursory Changes in the ³He/⁴He Ratio Prior to the 2021 Tajogaite Eruption at Cumbre Vieja Volcano, La Palma, Canary Islands