Approximately what percentage of the earth\'s crust is composed of sediment and

Question

Approximately what percentage of the earth's crust is composed of sediment and sedimentary rocks? 75 15 5 95 This nonfoliated metamorphic rock is actually a clean -burning fossil fuel. marble anthracite coal hornfels slate Which of the following metamorphic texture - metamorphic rock pair is INCORRECT? schistosity - mica schist porphyroblastic - garnet-mica schist slaty cleavage - marble gneissic banding - gneiss Which of the factors below is LEAST relevant to the metamorphism of a pre-existing rock? heat age of original rock parent rock composition pressure

Explanation / Answer

47) c

Only about 5% of earth's crust is made-up of sedimentary rocks. Bit they are known to present about 75% of the outer surfaces of crust

48) B

49) slaty cleavage - marble

50) B

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