characteristics of sedimentary rock and metamorphic rock briefly explain
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Answer:
sedimentary rock: Although some sedimentary rocks are porous, they are largely impermeable. Only some varieties of sedimentary rocks are pervious if they have joints or cracks.
Sedimentary rocks have porosity varying between the range of 1% to 50%. This is because the process of formation of both organic or clastic sedimentary rocks, as well as chemical sedimentary rocks, take place over time, the particles are not always evenly packed. So, in more compact sedimentary rocks, the porosity is measured at 27% while in a more loosely packed rock, it can go over 47%. While sandstones can have a porosity of 5%, clays have porosity exceeding 50%.
metamorphic rock: Cataclastic metamorphism occurs along with the tectonic plate faults where the rocks get rubbed with each other which results in the grain size reduction.
Transformation of these rocks are classified as one which could not form non foliated rock and is of low grade.
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