Concretion

From Conservapedia
This is an old revision of this page, as edited by DanielPulido (talk | contribs) at 08:25, May 9, 2010. It may differ significantly from current revision.
Jump to navigation Jump to search

Concretion, commonly discrete, rounded nodular rock masses formed and found in beds of shale or clay.[1]

Sources

  • Pellant, Chris. The Complete Book of Rocks and Minerals, Dorling Kindersley Inc.: New York (1995)

References

  1. ↑ Pellant, p. 250