What about when basaltic magma hardens? Basalt forms when basaltic lava hardens; obsidian and pumice form when basaltic magma hardens, with this rapid cooling they are very light because of the gas. When basaltic magma hardens, gabbro might also form. A rock has a porphyritic texture.

Which igneous rocks forms when basaltic lava hardens when basaltic magma hardens?

Which igneous rock forms when basaltic lava hardens? When basaltic magma hardens? Basalt forms when basaltic lava hardens; gabbro, the coarse-grained (intrusive) equivalent of basalt, forms when basaltic magma hardens. A rock has a porphyritic texture.

What rocks form from basaltic magma?

Igneous rocks are intrusive or extrusive depending on how they are formed. 2. A way to further classify these rocks is by the magma from which they form. An igneous rock can form from basaltic, andesitic, or granitic magma.