sedimentary rocks are formed by deposition / cementation
clastic_sedimentary_rock is sedimentary_rock. deposition is accretion. limestone is sedimentary_rock. sedimentary_rock is stone. sedimentary_clay is soil. sedimentary_clay is not soil. clastic_sedimentary_rock is not sedimentary_rock. sedimentary_rock is rock. shale is clastic_sedimentary_rock. sedimentary is rock.