| 21. | Felsic, the main edit in question, I have freely admitted was problematic.
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| 22. | During this ascent, secondary magmas were formed that generated intermediate and felsic rocks.
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| 23. | The most common felsic rock is granite.
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| 24. | Continental crust has the highest amount of silicon ( such rock is called felsic ).
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| 25. | Ultramafic rocks of the Hooggenoeg Formation were most likely not parental for the felsic rocks.
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| 26. | Extensional tectonic activity followed the Laramide Orogeny and was accompanied by voluminous felsic volcanic eruptions.
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| 27. | Instead, melts generated in this zone eventually reach the surface, generating felsic volcanism.
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| 28. | It is produced when felsic lava extruded from a volcano cools rapidly with minimal crystal growth.
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| 29. | Metamorphic felsic gneiss and mafic gneiss formations are common in the northern parts of the watershed.
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| 30. | The Complex includes layered mafic intrusions ( the Rustenburg Layered Suite ) and a felsic phase.
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