extreme heat and pressure compact sediments into sedimentary rocks
sedimentary is rock. arenaceous_rock is sedimentary_rock. carbonate_rock is sedimentary_rock. shale is clastic_sedimentary_rock. sedimentary_clay is soil. sandstone is clastic_sedimentary_rock. clastic_sedimentary_rock is sedimentary_rock. phosphate_weathering is erosion. sedimentary_rock is rock. sediment is solid_ground.