Killas

Killas is a Cornish mining term for metamorphic rock strata of sedimentary origin which was altered regionally by the Variscan orogeny and then locally by heat from the intruded granites in the English counties of Devon and Cornwall. The term is used in both counties.

This article is about Cornish mining. For the plural, see killa (disambiguation).
This article is issued from Wikipedia. The text is licensed under Creative Commons - Attribution - Sharealike. Additional terms may apply for the media files.