GEOL 1330 Lecture 9: 10-5
20 Jul 2016
School
Department
Course
Professor
Document Summary
The solid-state change in composition and/or texture of a rock due to high temperatures, pressures or fluids in the earth. Force in which is equal on all side of the material, litho-static pressure. Equivalent to the plate tectonic stress, occurs in the convergent boundaries. Fluids contains a lot of dissolve solute, which could add into the minerals, changing the composition of the mineral rocks. Too much stress would fracture the mineral rock. Pressure & temperature cause new minerals to grow. Pressure & temperature cause rocks to fracture which fluid infill. Extracting oil and gas from the sedimentary rock. Size, shape, and arrangement of the mineral grains(foliation) The foliation are oriented that are perpendicular to the stress. The significant variable of non-foliated mineral are temperature, as the significant variable of mineral are pressure. Involves in grain rotation, transforming a set of minerals to a paralleled layers of mineral due to the pressure. Generation of numerous small fractures in the grains(micro-fractures)
