Sedimentary rock is the type of rock that is loosely held together. They are
usually formed from the deposition of particles at a particular place.
Sedimentary rock formation mostly occur through the accumulation of these
particles which is then followed by cementation to aid the particles to be
held together resulting in the formation of the rock.
Sedimentary rocks are always loosely held together unlike the igneous and
metamorphic which are formed through higher pressure deep in the earth
strata. This makes them to be tightly held together.
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