What is the crossword answer for the clue: Rock formation?

ORE - a 3 letter word may be the answer you are looking for!

CRAG - a 4 letter word may be the answer you are looking for!

TERRANE - a 7 letter word may be the answer you are looking for!

SIAL - a 4 letter word may be the answer you are looking for!

GEODE - a 5 letter word may be the answer you are looking for!

Rock formation?

3 Character Answers:

ORE

4 Character Answers:

CRAG

SIAL

5 Character Answers:

GEODE

7 Character Answers:

TERRANE