Flashcards in lesson2.3 sedimentary rock Deck (13):
layers of rock.
the process in which sedimentary rocks are arranged in layers.
sand grains may be compacted, or compressed, and then cemented together to form a rock.
is made of fragments of rocks cemented together by a mineral such as calcite or quartz.
Clastic sedimentary rock
forms from solutions of dissolved minerals and water.
Chemical sedentary rock
forms from the remains of once-living plants and animals.
Organic sedimentary rock
the remains or physical evidence of an organism preserved by geological processes.
some limestone is made of the skeletons of tiny organisms
animal remains eventually become cemented together
are marks form from the action of wind and water
form when fine-grained sediments at the bottom of a shallow body of water are exposed to the air and dry out.