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Swiss Journal of Geosciences
Fig. 1 | Swiss Journal of Geosciences

Fig. 1

From: Swiss and Alpine geologists between two tectonic revolutions. Part 1: from the discovery of nappes to the hypothesis of continental drift

Fig. 1

The successive layers of the Earth, according to Heim (1918). The boundary between the sial (sal upper granitic crust) and the sima (= lower basaltic crust) is drawn as diffuse and irregular, and the Moho is missing (although already discovered). Crofesima chromium and iron-rich sima (density 5), Nifesima nickel and iron-rich sima (density 6), Nife nickel–iron core (density 6–12)

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