Carbonate Melts and Carbonatites

@inproceedings{Jones2012CarbonateMA,
  title={Carbonate Melts and Carbonatites},
  author={Adrian P. Jones},
  year={2012}
}
  • A. Jones
  • Published 20 November 2012
  • Geology
Carbonatites are familiar to students of petrology as rare igneous rocks formed predominantly of carbonate, whose only modern expression is a single active volcano that erupts strongly alkaline carbonate lavas with no direct match in Earth’s geological record (see Lengai movie in the electronic version of this chapter or on the MSA RiMG website). Based on their Sr-Nd-Pb isotopic data, stable isotopic compositions, noble gases, and experimental phase equilibria, they are derived from the mantle… 
Carbonatites: Enigmatic Magmatic Rocks, with Special Reference to India
Carbonatites, defined as carbonate-rich rocks of igneous origin, pose considerable challenges in understanding their genesis and evolution. These mantle-derived, rare, magmatic rocks are enigmatic in
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Carbonatitic and carbonated silicate melts generated from melting in the mantle are the chief agents for liberating carbon from the solid Earth and exert important controls on Earth’s deep carbon
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Petrochronological Constraints on the Origin of the Mountain Pass Ultrapotassic and Carbonatite Intrusive Suite, California
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Tetrahedrally coordinated carbonates in Earth's lower mantle.
TLDR
Experimental evidence is presented that under the sufficiently high pressures and high temperatures existing in the lower mantle, ferromagnesian carbonates transform to a phase with tetrahedrally coordinated carbons, which may have significant implications for carbon reservoirs and fluxes, and the global geodynamic carbon cycle.
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References

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An experimental determination of primary carbonatite magma composition
Carbonatites are uncommon carbonate-rich rocks usually found in continental intra-plate regions and often associated with rifting. There has been much debate as to whether carbonatite magmas are
Geochemistry of oceanic carbonatites compared with continental carbonatites: mantle recycling of oceanic crustal carbonate
Abstract. Major and trace element and Sr–Nd–Pb–O–C isotopic compositions are presented for carbonatites from the Cape Verde (Brava, Fogo, Sáo Tiago, Maio and Sáo Vicente) and Canary (Fuerteventura)
New forms of abundant carbonatite−silicate volcanism: recognition criteria and further target locations
Abstract In the Calatrava province of central Spain, numerous Quaternary pyroclastic vents have erupted carbonatite magmas carrying silicate melt fragments, mantle debris and megacrysts. Lava flows
Extrusive carbonatites: A brief review
The carbon isotope geochemistry of mantle xenoliths
Diamonds and the Geology of Mantle Carbon
### Introduction Earth’s carbon, derived from planetesimals in the 1 AU region during accretion of the Solar System, still retains similarities to carbon found in meteorites (Marty et al. 2013) even
Primary carbonatite melt from deeply subducted oceanic crust
TLDR
Experimental and geochemical evidence is provided that silicate mineral inclusions in diamonds from Juina, Brazil, crystallized from primary and evolved carbonatite melts in the mantle transition zone and deep upper mantle.
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