Glossary

A definition will show up in this window whenever you select a key term from an Overview page. You can also find a key term manually by scrolling through the glossary or choosing a letter from the alphabetized menu below.

Choose a letter:

a  b  c  d  e  f  g  h  i  j  k  l  m  n  o  p  q  r  s  t  u  v  w  x  y  z


Scroll down to see the "X" terms

 

xenolith

A relict of wall rock surrounded by intrusive rock when the intrusive rock freezes.