What is the difference between shale and a slate? a) Slate is the parent rock of shale b) Shale is the parent rock of slate c) The two rocks are unrelated d) The two rocks are of the same metamorphic grade argi Match the following metamorphic rock with its protolith: > ht Basalt Gneiss Limestone Quartz sandstone Shale 1. Marble 2. Amphibolite 3. Quartzite 4. Granite 5. Phyllite Question 16 (5 points) Saved 40 Listen During metamorphism, changes in the bulk composition of a rock occur primarily as a result of ? a) increases in pressure b) increases in temperature c) reaction with hydrothermal fluids d) all of these