2.3 Sedimentary Rock Flashcards
grains of sand compacted and cemented together to form rock
sandstone
a rock that forms when when rock or mineral fragments, called clasts, are cemented together
clastic sedimentary rock
rock or mineral fragments
clasts
rock that forms when minerals crystallize out of a solution, such as sea water, to become a rock
chemical sedimentary rock
rock that 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
fossils
skeletons of tiny organisms
coral
huge colonies that coral lives in
reefs
sedimentary rock that forms underground when partially decomposed plant material is buried beneath sediment and is changed into coal by heat and pressure
coal
limestone made from the calcium carbonate from skeletons and shells of sea creatures
fossiliferous limestone
the markings on sedimentary rocks that record the wave motion of wind or water
ripple marks
the structures that form when fine-grained sediments at the bottom of a shallow body of water are exposed to the air and dry out
mud cracks
layer(s) of rock
strata
the process in which sedimentary rocks are arranged in layers
startification
eroded rock material
sediment