Basalt is an igneous extrusive rock. Photomicrograph, thin section, polarized light.

---

Size: 5405px × 3532px
Photo credit: © José María Barres Manuel / Alamy / Afripics
License: Royalty Free
Model Released: No

Keywords: aphanitic, basalt, extrusive, geology, igneous, light, mafic, microscope, petrographic, petrology, photomicrograph, polarized, polarizing, rock, section, thin, volcanic