Here are some possibilities:
* A specific region: If you have a map or text mentioning "western metamorphic belt," it could be referring to a specific geological region with significant metamorphic rocks. To understand this, you would need more information about the location or the source of the term.
* A general description: It could be a generic term for a belt of metamorphic rocks located in the western portion of a continent or country. However, this would require a more specific geographic context (e.g., western North America, western Europe).
To help me provide a more accurate answer, please provide:
* The source of the term: Where did you encounter this phrase? Was it in a textbook, research paper, or other document?
* The geographic context: What specific area or region is being discussed?
Once I have this information, I can give you a more precise definition of the "western metamorphic belt."
