Magmas generated by Felsic processes are considerably more viscous than those produced by intermediate processes. The viscosity of felsic magmas is less than that of intermediate or mafic magmas, so ...

15. Carbonated mafic and felsic igneous rocks with green chrome mica quartz veins and pyrite This sample is also from Timmins, Ontario. [NOTE ORIGINAL PAGE LINKS TO SAMPLE 13.] Note the quartz veins ...

This modeling confirmed that felsic melts could be produced from the same starting materials and remain stable at pressures of 0.1 to 0.2 gigapascal (3–6 kilometers depth).

Finally, felsic continental crust is unique to the Earth in the solar system, and its origin cannot be well explained by the theory of plate tectonics.

We consider the latter to be of importance as they may represent felsic magmas which act as progenitors to the peralkaline felsic compositions, either by representing a single step on an evolutionary ...

Earth’s earliest crust may have been basaltic by analogy with the ancient crusts of Mercury, Venus, and Mars. On Earth, the timing of the transition from mafic crust to felsic continental crust may ...