What Does a Glassy Texture Tell Us About the History

question 16

Essay

What does a glassy texture tell us about the history of an igneous rock?

---

Definitions:

Optic Disc

The blind spot where the optic nerve exits from the retina of the eye.

Lacrimal Spot

A small mark or area on the lacrimal part of the eye, often relating to the tear ducts or glands.

Accommodation Zone

An area where two tectonic plates slide past each other, adjusting to changes in plate motion.

Open-angle Glaucoma

A common form of glaucoma characterized by gradual loss of vision with open and unobstructed anterior chamber angles.