Limestone and chalk are formed from organic material
Limestone - Clastic shell fragments
Chalk - Microscopic shells of calicum carbonate plates formed by single celled algaes
Chert - Microscopic siliceous organisms, recrystallized silica
sedimentary
Example sentences: Fossils are often found in sedimentary rock. It is easier to erode sedimentary rock than other forms of rock.
Organic sedimentary rocks are formed from the accumulation of once living things. Coal is an example of a sedimentary rock.
Example sentences: Fossils are often found in sedimentary rock. It is easier to erode sedimentary rock than other forms of rock.
Sedimentary
Chalk is a form of limestone, a sedimentary rock.
Soil is a non-example of a sedimentary rock.
how is marble an example of metamorphic rock#
Sandstone is an example of sedimentary rocks.
Shale is a sedimentary rock, not a metamorphic rock.
A calcitic stalactite.
There's an example of some beautiful sedimentary rock a little farther down the gorge.