Magmatic activity refers to the movement of molten rock, or magma, within the Earth's crust. When magma rises to the surface and solidifies, it forms igneous rock. The magmatic activity that took place in the Cape Peninsula peninsula likely resulted in the intrusion of magma into the existing rock formations, eventually solidifying and becoming part of the mountain range. This process can take millions of years, and can cause uplift and changes in the topography. Additionally, the heat and pressure associated with magmatic activity can also cause metamorphism in surrounding rocks, altering their mineralogy and texture.
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