The most common and most likely answer to this crossword clue is the 4 letter word SIAL which also is the latest solution we found used in Boston Globe in 2002.
Crust-forming rock crossword clue answers
Here's a list of possible crossword answers ranked by the most likely to least likely.
| Answer | Likelyness | Letters |
|---|---|---|
| SIAL | 100 % | 4 |
Words with a meaning similar to the clue: Crust-forming rock
These words may or may not be a possible solution to this crosswords clue.- sial
- extrusion
- feldspar
- volcano
- rocks
- magma
- sima
- massif
- crustal
- ledge
- ragstone
- crustaceous
Crossword Answer definitions
SIAL noun- The rocks rich in silicon and aluminum that form the upper layer of the earth's crust, which lies beneath all continental landmasses.
More crossword clues leading to the same solutions
Here's a few more crossword clues - all leading to the identical solution