While sedimentary rocks constitute about 5% of the earth's crust, the remaining 95% are igneous or metamorphic rocks ... has a pleasant texture to the touch.

increased viscosity during the formation of a granulite facies (a kind of metamorphic rock that contains minerals) assemblage causes the subduction plate boundary to migrate deeper into the slab ...

and metamorphic / igneous geology. As a quantitative, field-based geologist, I integrate a variety of analytical methods in my research to investigate how intrinsic rock properties (e.g., composition, ...