Which of the following rock types is formed through the ejection of magma onto the surface of the earth? by Sunday | Dec 24 | Geography JAMB | 0 comments A. Lignite B. Granite C. Slate D. Basalt Correct Answer: Option D – Basalt Users Also Read These:An intrusion of molten magma formed horizontally…A basin where rock layers have been folded and in…The angular distance of a point on the earth’s…Mercury which is spilled onto a glass surface forms…The intrusive landform produced when magma is cooled…