Which of the following rocks is not formed from pre-existing rocks? by Sunday | Jun 6 | Agricultural Science WAEC | 0 comments A. limestone B. granite C. shale D. marble Correct Answer: Option B B. granite Users Also Read These:'They are formed from the accumulation of materials…Igneous rocks formed within the crust are called?The type of rocks formed from the molten magma is known as?Organic sedimentary rocks formed from the?The formation of metamorphic rocks normally involves…