Which of the following is not a metamorphic rock? by Sunday | Jun 13 | Geography WAEC | 0 comments A. slate B. marble C. loess D. gneiss Correct Answer: Option C – loess Users Also Read These:Marble is a metamorphic rock formed from?All the following rocks are metamorphic except?Which of the following is not an example of…The factors involved in the formation of metamorphic…Which of the following rocks is not metamorphic?