Breccia
A sedimentary rock made
with large, angled particles.
Cementation
When sediments are glued
together to form rock.
Chemical Rock
Sedimentary rocks formed when minerals are
dissolved in water and then the water evaporates.
Chert
A hard sedimentary rock made from
decomposed sea life. Chert has been
used for stone tools in the past.
Clastic Rock
Sedimentary rocks formed when pieces of other
rocks or sediments are cemented together.
Coal
A sedimentary rock made from
decomposed dead plants.
Compatction
When layers of sediment are
squeezed together.
Conglomerate
A sedimentary rock made with
large, rounded particles.
Coquina
A sedimentary rock made from
fossilized seashells stuck together.
Deposition
When pieces of rock are dropped
and no longer moving.
Erosion
The movement of pieces of rock
from one place to another.
Limestone
A sedimentary rock made from
decomposed marine creatures.
Sandstone
A sedimentary rock made from
grains of sand.
Sedimentary Rock
Rocks formed from other rocks
and minerals.
Sedimentation
When layers of rocks, sand, clay and other particles
are deposited in layers over millions of years.
Sediments
Loose pieces of rock, sand, dust,
clay, or dirt.
Shale
A sedimentary rock made from
microscopic mud particles.
Weathering
Any process that breaks rocks
down into smaller pieces.