comparison between
igneous and
sedimentary rocks
Sedimentary
Igneous
formed from
multiple layers
compacting
Formed from hot
magma or lava
cooling
Pieces of rock are loosened by
weathering, then transported to some
basin or depression where sediment is
trapped. If the sediment is buried
deeply, it becomes compacted and
cemented, forming sedimentary rock.
Igneous rocks (from the Latin word
for fire) form when hot, molten
rock crystallizes and solidifies. The
melt originates deep within the Earth
near active plate boundaries or hot
spots, then rises toward the surface.
very hard
They are genuinely hard to break
they take Thousands
of years to form
they are much quicker to form than
sedimentary roc
non-porous to
water
water cannot penetrate through
igneous rocks
not very hard
they are much easier due t the small
grains in them such as sand, but can
be harder to break if they are bigger
they take millions
of years to form
they take a long time to form
porous to water
water can penetrate through
sedimentary rocks