Term used to describe a large shallow water body, usually in fossil deposits where mollusk shells are found in some concentration
Blog
Category: <span>N</span>
A dike filled by compacted sedimentary materials including sand and gravels
A hexagonal feldspathoid mineral, (Na,K)AlSiO4
Lava that cools in the conduit of a volcano
A small loose alluvial mass of near pure gold or platinum metal