Citation:Yaxley, G. M., Ghosh, S., Kiseeva, E. S., Mallik, A., Spandler, C., Thomson, A. R. and Walter, M. J. (2019) 'CO2-Rich Melts in Earth', in Orcutt, B.N., Daniel, I. & Dasgupta, R. (eds.) Deep Carbon: Past to Present. Cambridge: Cambridge University Press, pp. 129-162. doi: 10.1017/9781108677950.006
This chapter reviews the systematics of partial melting of mantle lithologies – like peridotite and eclogite – in the presence of carbon dioxide. It discusses the composition of mantle-derived magmas generated in the presence of carbon dioxide and whether magmas erupted on Earth’s surface resemble carbonated magmas from the mantle. It reviews how the production of carbon dioxide-rich magma in the mantle varies as a function of tectonic settings – beneath continents and oceans and in subduction zones – and time.
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