Question

fill in the blank question some igneous rocks can have a blank texture with large, well-formed crystals surrounded by finer-grained crystals. other igneous rocks have a blank texture characterized by holes formed by gas bubbles that give the rock a spongy appearance.

Explanation:

1. For the first blank (texture with large, well - formed crystals surrounded by finer - grained crystals): The texture of igneous rocks with large crystals (phenocrysts) in a finer - grained matrix (groundmass) is called porphyritic texture.
2. For the second blank (texture with holes from gas bubbles): The texture of igneous rocks with holes formed by gas bubbles is called vesicular texture.

Answer:

First blank: porphyritic
Second blank: vesicular