Biological Sedimentary Rock

From Conservapedia

Jump to: navigation, search
Biological Sedimentary Rock.jpg
Biologic sedimentary rocks form when large numbers of living things die, pile up, and are compressed and cemented to form rock. Accumulated carbon-rich plant material may form coal. Deposits made mostly of animal shells may form limestone, coquina, or chert.[1]

References

  1. http://wrgis.wr.usgs.gov/docs/parks/rxmin/rock2.html
Personal tools