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Mantle geodynamics

Older and hotter

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Volcanic rocks erupted at mid-ocean ridges can record the temperature of the underlying mantle. Ancient crust in the Atlantic Ocean formed from anomalously hot mantle, possibly warmed by continental insulation before the opening of the ocean basin.

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Figure 1: Chemical compositions of ancient ocean crust in the Atlantic and Pacific oceans compared with modern ocean ridge segments.

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Authors and Affiliations

  1. Charles Langmuir is in the Department of Earth and Planetary Sciences, Harvard University, Cambridge, Massachusetts 02138, USA,

    Charles Langmuir

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  1. Charles Langmuir
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Correspondence to Charles Langmuir.

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Langmuir, C. Older and hotter. Nature Geosci 6, 332–333 (2013). https://doi.org/10.1038/ngeo1810

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